certstmt_10dccmt17b12606.htm - Generated by SEC Publisher for SEC Filing

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STATEMENT TO NOTEHOLDERS

June 17, 2026


TRANSACTION PARTIES


Depositor:	Citigroup Commercial Mortgage Securities Inc.
Master Servicer:	Wells Fargo Bank, National Association
Certificate Administrator:	Citibank, N.A.
Special Servicer:	LNR Partners, LLC
Trustee / Custodian:	Deutsche Bank Trust Company Americas
Asset Representations Reviewer /
	BellOak, LLC
Operating Advisor:




	Danny Lee	Citibank, Agency and Trust
	(212) 816-4936	388 Greenwich Street Trading, 4th Floor
danny1.lee@citi.com		New York, NY 10013


TABLE OF CONTENTS


1	.	Distribution Summary	2
1.1	.	Summary	2
1.2	.	Factors	3
2	.	Distribution Detail	4
2.1	.	Interest Detail	4
2.2	.	Interest Shortfall Detail	5
2.3	.	Principal Detail	6
3	.	Reconciliation Detail	7
4	.	Other Information	8
5	.	Stratification Detail	9
6	.	Mortgage Loan Detail	14
7	.	NOI Detail	16
8	.	Delinquency Loan Detail	18
9	.	Collateral Performance Delinquency and Loan Status Detail	19
10	.	Appraisal Reduction Detail	20
11	.	Historical Appraisal Reduction Detail	21
12	.	Loan Modification Detail	25
13	.	Historical Loan Modification Detail	26
14	.	Specially Serviced Loan Detail	33
15	.	Historical Specially Serviced Loan Detail	34
16	.	Unscheduled Principal Detail	39
17	.	Historical Unscheduled Principal Detail	40
18	.	Liquidated Loan Detail	41
19	.	Historical Liquidated Loan Detail	42
20	.	CREFC Investor Reporting Package Legends	43
21	.	Notes	44


Reports Available at sf.citidirect.com	v. 21.09.28	Page 1 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION SUMMARY

June 17, 2026


											Accretion
											&
											Non-Cash
					Accrual		Other				Balance
	Original	Prior	Pass-Through		Day	Interest	(As Interest)	Principal	Total	Realized Loss	Increase/		Current
Class	Balance	Balance	Rate		Count	Distributed	Distributed	Distributed	Distributed	/(Recovery)	(Decrease)		Balance

A-1	21,308,000.00	-	2.008000	%	30/360	-	-	-	-	-	-		-
A-2	52,843,000.00	-	3.053000	%	30/360	-	-	-	-	-	-		-
A-3	245,000,000.00	228,143,360.27	3.197000	%	30/360	607,811.94	55,863.07	8,815,146.78	9,478,821.79	-	-		219,328,213.49
A-4	268,110,000.00	268,110,000.00	3.458000	%	30/360	772,603.65	-	-	772,603.65	-	-		268,110,000.00
A-AB	38,890,000.00	7,902,318.03	3.243000	%	30/360	21,356.01	4,028.77	622,698.74	648,083.52	-	-		7,279,619.29
A-S	89,450,000.00	89,450,000.00	3.711000	%	30/360	276,624.12	-	-	276,624.12	-	-		89,450,000.00
B	38,016,000.00	38,016,000.00	3.963000	%	30/360	125,547.84	-	-	125,547.84	-	-		38,016,000.00
C	36,899,000.00	36,899,000.00	4.235294	%	30/360	130,231.77	-	-	130,231.77	-	-		36,899,000.00
D	41,370,000.00	41,370,000.00	3.000000	%	30/360	103,425.00	-	-	103,425.00	-	-		41,370,000.00
E	21,245,000.00	21,245,000.00	3.300000	%	30/360	58,423.75	-	-	58,423.75	-	-		21,245,000.00
F	8,945,000.00	8,945,000.00	3.300000	%	30/360	24,598.75	-	-	24,598.75	-	-		8,945,000.00
G	8,945,000.00	8,945,000.00	3.300000	%	30/360	24,598.75	-	-	24,598.75	-	-		8,945,000.00
H	23,481,024.00	20,987,913.95	3.300000	%	30/360	16,373.34	-	-	16,373.34	-	-		20,987,913.95
R	-	-	0.000000	%	30/360	-	-	-	-	-	-		-
VRR	47,079,054.00	40,527,031.22	0.000000	%	30/360	140,860.62	4,669.57	496,728.71	642,258.90	-	-		40,030,302.51
Total	941,581,078.00	810,540,623.47				2,302,455.54	64,561.41	9,934,574.23	12,301,591.18	-	-		800,606,049.24
Notional
X-A	715,601,000.00	593,605,678.30	0.842344	%	30/360	416,683.26	28,829.98	-	445,513.24	-	(9,437,845.52	)	584,167,832.78
X-B	38,016,000.00	38,016,000.00	0.272294	%	30/360	8,626.29	-	-	8,626.29	-	-		38,016,000.00
X-D	41,370,000.00	41,370,000.00	1.235294	%	30/360	42,586.77	-	-	42,586.77	-	-		41,370,000.00
X-E	21,245,000.00	21,245,000.00	0.935294	%	30/360	16,558.61	-	-	16,558.61	-	-		21,245,000.00
X-F	17,890,000.00	17,890,000.00	0.935294	%	30/360	13,943.68	-	-	13,943.68	-	-		17,890,000.00
X-H	23,481,024.00	20,987,913.95	0.935294	%	30/360	16,358.23	-	-	16,358.23	-	-		20,987,913.95
Total	857,603,024.00	733,114,592.25				514,756.84	28,829.98	-	543,586.82	-	(9,437,845.52	)	723,676,746.73

Grand Total	1,799,184,102	1,543,655,216				2,817,212.38	93,391.39	9,934,574.23	12,845,178.00	-	(9,437,845.52	)	1,524,282,796


Reports Available at sf.citidirect.com	v. 21.09.28	Page 2 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION SUMMARY - FACTORS

June 17, 2026


									Accretion
									&
									Non-Cash
					Other				Balance
			Record	Interest	(As Interest)	Principal	Total	Realized Loss	Increase/	Current
Class	CUSIP		Date	Distributed	Distributed	Distributed	Distributed	/(Recovery)	(Decrease)	Balance

A-1	17326	CAW4	05/29/2026	-	-	-	-	-	-	-
A-2	17326	CAX2	05/29/2026	-	-	-	-	-	-	-
A-3	17326	CAY0	05/29/2026	2.48086506	0.22801253	35.98019094	38.68906853	-	-	895.21719792
A-4	17326	CAZ7	05/29/2026	2.88166667	-	-	2.88166667	-	-	1,000.00000000
A-AB	17326	CBA1	05/29/2026	0.54913885	0.10359398	16.01179583	16.66452867	-	-	187.18486218
A-S	17326	CBB9	05/29/2026	3.09249994	-	-	3.09249994	-	-	1,000.00000000
X-A	17326	CBE3	05/29/2026	0.58228435	0.04028779	-	0.62257213	-	-	816.33177257
X-B	17326	CBF0	05/29/2026	0.22691209	-	-	0.22691209	-	-	1,000.00000000
X-D	17326CAJ3 U1740GAE4 17326CAK0		05/29/2026	1.02941189	-	-	1.02941189	-	-	1,000.00000000
X-E	17326CAL8 U1740GAF1 17326CAM6		05/29/2026	0.77941210	-	-	0.77941210	-	-	1,000.00000000
X-F	17326CAN4 U1740GAG9 17326CAP9		05/29/2026	0.77941196	-	-	0.77941196	-	-	1,000.00000000
X-H	17326CBK9 U1740GAM6 17326CBL7		05/29/2026	0.69665744	-	-	0.69665744	-	-	893.82447503
B	17326	CBC7	05/29/2026	3.30250000	-	-	3.30250000	-	-	1,000.00000000
C	17326	CBD5	05/29/2026	3.52941191	-	-	3.52941191	-	-	1,000.00000000
D	17326CAA2 U1740GAA2 17326CAB0		05/29/2026	2.50000000	-	-	2.50000000	-	-	1,000.00000000
E	17326CAC8 U1740GAB0 17326CAD6		05/29/2026	2.75000000	-	-	2.75000000	-	-	1,000.00000000
F	17326CAE4 U1740GAC8 17326CAF1		05/29/2026	2.75000000	-	-	2.75000000	-	-	1,000.00000000
G	17326CAG9 U1740GAD6 17326CAH7		05/29/2026	2.75000000	-	-	2.75000000	-	-	1,000.00000000
H	17326CBG8 U1740GAL8 17326CBH6		05/29/2026	0.69730094	-	-	0.69730094	-	-	893.82447503
R	17326	CAU8	05/29/2026	-	-	-	-	-	-	-
VRR	17326	CAT1	05/29/2026	2.99200192	0.09918572	10.55094926	13.64213690	-	-	850.27839578


Reports Available at sf.citidirect.com	v. 21.09.28	Page 3 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - INTEREST DETAIL

June 17, 2026


			Rate					Interest			Shortfall				Paid
															Cap
							Accrual	Net	Accreted	Non	Carry	Cap Carryover			Carryover
Class	Uncapped Capped				Next		Dates	Accrued	/Deferred	Recovered	Forward	/Basis Risk	Accrued	Carry Forward /Basis Risk		Total

A-1	2.00800	%	2.00800	%	2.00800	%	05/01-05/31	-	-	-	-	-	-	-	-	-
A-2	3.05300	%	3.05300	%	3.05300	%	05/01-05/31	-	-	-	-	-	-	-	-	-
A-3	3.19700	%	3.19700	%	3.19700	%	05/01-05/31	607,811.94	-	-	-	-	607,811.94	-	-	663,675.01
A-4	3.45800	%	3.45800	%	3.45800	%	05/01-05/31	772,603.65	-	-	-	-	772,603.65	-	-	772,603.65
A-AB	3.24300	%	3.24300	%	3.24300	%	05/01-05/31	21,356.01	-	-	-	-	21,356.01	-	-	25,384.78
A-S	3.71100	%	3.71100	%	3.71100	%	05/01-05/31	276,624.12	-	-	-	-	276,624.12	-	-	276,624.12
B	3.96300	%	3.96300	%	3.96300	%	05/01-05/31	125,547.84	-	-	-	-	125,547.84	-	-	125,547.84
C	4.31828	%	4.23529	%	4.23529	%	05/01-05/31	130,231.77	-	-	-	-	130,231.77	-	-	130,231.77
D	3.00000	%	3.00000	%	3.00000	%	05/01-05/31	103,425.00	-	-	-	-	103,425.00	-	-	103,425.00
E	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	58,423.75	-	-	-	-	58,423.75	-	-	58,423.75
F	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	24,598.75	-	-	-	-	24,598.75	-	-	24,598.75
G	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	24,598.75	-	-	-	-	24,598.75	-	-	24,598.75
H	3.30000	%	3.30000	%	3.30000	%	05/01-05/31	57,716.76	-	-	48,386.72	-	16,373.34	-	-	16,373.34
R	0.00000	%	0.00000	%	0.00000	%	05/01-05/31	-	-	-	-	-	-	-	-	-
VRR	0.00000	%	0.00000	%	0.00000	%	05/01-05/31	140,860.62	-	-	-	-	140,860.62	-	-	145,530.19
Total								2,343,798.96	-	-	48,386.72	-	2,302,455.54	-	-	2,367,016.95
Notional
X-A	1.00278	%	0.84234	%	0.84234	%	05/01-05/31	416,683.26	-	-	-	-	416,683.26	-	-	445,513.24
X-B	0.35528	%	0.27229	%	0.27229	%	05/01-05/31	8,626.29	-	-	-	-	8,626.29	-	-	8,626.29
X-D	1.31828	%	1.23529	%	1.23529	%	05/01-05/31	42,586.77	-	-	-	-	42,586.77	-	-	42,586.77
X-E	1.01828	%	0.93529	%	0.93529	%	05/01-05/31	16,558.61	-	-	-	-	16,558.61	-	-	16,558.61
X-F	1.01828	%	0.93529	%	0.93529	%	05/01-05/31	13,943.68	-	-	-	-	13,943.68	-	-	13,943.68
X-H	1.01828	%	0.93529	%	0.93529	%	05/01-05/31	16,358.23	-	-	-	-	16,358.23	-	-	16,358.23
Total								514,756.84	-	-	-	-	514,756.84	-	-	543,586.82

Grand Total								2,858,555.80	-	-	48,386.72	-	2,817,212.38	-	-	2,910,603.77


Reports Available at sf.citidirect.com	v. 21.09.28	Page 4 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - INTEREST SHORTFALL DETAIL

June 17, 2026


											Cap Carryover /
	Non-Recov Shortfall				Carry Forward Interest					Basis Risk Shortfall
			Other
Class	PPIS	SSRA	Shortfall	Prior	Int. on Prior	New	Paid	Outstanding	Prior	Int. on Prior	New	Paid	Outstanding

A-1	-	-	-	-	-	-	-	-	-	-	-	-	-
A-2	-	-	-	-	-	-	-	-	-	-	-	-	-
A-3	-	-	-	-	-	-	-	-	-	-	-	-	-
A-4	-	-	-	-	-	-	-	-	-	-	-	-	-
A-AB	-	-	-	-	-	-	-	-	-	-	-	-	-
A-S	-	-	-	-	-	-	-	-	-	-	-	-	-
B	-	-	-	-	-	-	-	-	-	-	-	-	-
C	-	-	-	-	-	-	-	-	-	-	-	-	-
D	-	-	-	-	-	-	-	-	-	-	-	-	-
E	-	-	-	-	-	-	-	-	-	-	-	-	-
F	-	-	-	-	-	-	-	-	-	-	-	-	-
G	-	-	-	-	-	-	-	-	-	-	-	-	-
H	-	-	-	2,561,200.82	7,043.30	41,343.42	-	2,609,587.54	-	-	-	-	-
R	-	-	-	-	-	-	-	-	-	-	-	-	-
VRR	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	2,561,200.82	7,043.30	41,343.42	-	2,609,587.54	-	-	-	-	-
Notional
X-A	-	-	-	-	-	-	-	-	-	-	-	-	-
X-B	-	-	-	-	-	-	-	-	-	-	-	-	-
X-D	-	-	-	-	-	-	-	-	-	-	-	-	-
X-E	-	-	-	-	-	-	-	-	-	-	-	-	-
X-F	-	-	-	-	-	-	-	-	-	-	-	-	-
X-H	-	-	-	-	-	-	-	-	-	-	-	-	-
Total	-	-	-	-	-	-	-	-	-	-	-	-	-

Grand Total	-	-	-	2,561,200.82	7,043.30	41,343.42	-	2,609,587.54	-	-	-	-	-


Reports Available at sf.citidirect.com	v. 21.09.28	Page 5 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DISTRIBUTION INFORMATION - PRINCIPAL DETAIL

June 17, 2026


					Accretion
					&
					Non-Cash
					Balance		Cumulative
	Prior	Principal	Accreted	Realized Loss	Increase/	Current	Realized	Class %		Class %		Sub %		Sub %
Class	Balance	Distributed	Principal	/(Recovery)	(Decrease)	Balance	Loss	Original		Current		Original		Current

A-1	-	-	-	-	-	-	-	2.26	%	0.00	%	30.00	%	34.95	%
A-2	-	-	-	-	-	-	-	5.61	%	0.00	%	30.00	%	34.95	%
A-3	228,143,360.27	8,815,146.78	-	-	-	219,328,213.49	-	26.02	%	27.40	%	30.00	%	34.95	%
A-4	268,110,000.00	-	-	-	-	268,110,000.00	-	28.47	%	33.49	%	30.00	%	34.95	%
A-AB	7,902,318.03	622,698.74	-	-	-	7,279,619.29	-	4.13	%	0.91	%	30.00	%	34.95	%
A-S	89,450,000.00	-	-	-	-	89,450,000.00	-	9.50	%	11.17	%	20.00	%	23.19	%
B	38,016,000.00	-	-	-	-	38,016,000.00	-	4.04	%	4.75	%	15.75	%	18.20	%
C	36,899,000.00	-	-	-	-	36,899,000.00	-	3.92	%	4.61	%	11.63	%	13.34	%
D	41,370,000.00	-	-	-	-	41,370,000.00	-	4.39	%	5.17	%	7.00	%	7.90	%
E	21,245,000.00	-	-	-	-	21,245,000.00	-	2.26	%	2.65	%	4.63	%	5.11	%
F	8,945,000.00	-	-	-	-	8,945,000.00	-	0.95	%	1.12	%	3.63	%	3.94	%
G	8,945,000.00	-	-	-	-	8,945,000.00	-	0.95	%	1.12	%	2.62	%	2.76	%
H	20,987,913.95	-	-	-	-	20,987,913.95	2,493,110.05	2.49	%	2.62	%	0.00	%	0.00	%
R	-	-	-	-	-	-	-	0.00	%	0.00	%	0.00	%	0.00	%
VRR	40,527,031.22	496,728.71	-	-	-	40,030,302.51	131,216.31	5.00	%	5.00	%	0.00	%	0.00	%

Total	810,540,623.47	9,934,574.23	-	-	-	800,606,049.24	2,624,326.36	99.99	%	100.01	%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 6 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

RECONCILIATION DETAIL

June 17, 2026


SOURCE OF FUNDS			ALLOCATION OF FUNDS

Interest Funds Available			Scheduled Fees
Scheduled Interest	2,833,867.57		Servicing Fee	4,306.60
Prepayment Interest Shortfall	-		Trustee/Certificate Administrator Fee	4,606.57
Interest Adjustments	-		Operating Advisor Fee	753.87
ASER Amount	-		Asset Representations Reviewer Ongoing Fee	162.26
Realized Loss in Excess of Principal Balance	-		CREFC Intellectual Property Royalty License Fee	348.95
Total Interest Funds Available		2,833,867.57	Total Scheduled Fees		10,178.25
Principal Funds Available			Additional Fees, Expenses, etc.
Scheduled Principal	610,431.03		Additional Servicing Fee	-
Curtailments	-		Special Servicing Fee	3,500.00
Unscheduled Principal Collections	9,324,143.20		Work-out Fee	2,976.94
Net Liquidation Proceeds	-		Liquidation Fee	-
Repurchased Principal	-		Trust Fund Expenses	-
Substitution Principal	-		Trust Advisor Expenses	-
Other Principal	-		Reimbursement of Nonrecoverable Advances To the Servicer	-
			Reimbursement of Interest on Advances to the Servicer	-
Total Principal Funds Available		9,934,574.23
			Borrower Reimbursable Trust Fund Expenses	-
Other Funds Available
			Other Expenses	-
Yield Maintenance Charges	93,391.39
Withdrawal of Withheld Amounts from the Interest Reserve			Total Additional Fees, Expenses, etc.		6,476.94
Account	-
			Distributions
Deposit of Withheld Amounts to the Interest Reserve Account	-
			Interest Distribution	2,817,212.38
Total Other Funds Available		93,391.39	Principal Distribution	9,934,574.23
			Yield Maintenance Charge Distribution	93,391.39
			Total Distributions		12,845,178.00




Total Funds Available		12,861,833.19
			Total Funds Allocated		12,861,833.19


Reports Available at sf.citidirect.com	v. 21.09.28	Page 7 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

OTHER INFORMATION

Interest Reserve Account Information

June 17, 2026


Beginning Interest Reserve Account Balance	0.00
Deposit of Withheld Amounts to the Interest Reserve Account	0.00
Withdrawal of Withheld Amounts from the Interest Reserve Account	0.00
Ending Interest Reserve Account Balance	0.00
Excess Liquidation Proceeds Reserve Account Information
Beginning Excess Liquidation Proceeds Reserve Account Balance	0.00
Deposit to the Excess Liquidation Proceeds Reserve Account	0.00
Withdrawal from the Excess Liquidation Proceeds Reserve Account	0.00
Ending Excess Liquidation Proceeds Reserve Account Balance	0.00
ARD Mortgage Loan Information
Excess Interest	0.00
Collateral Information
% of Cut-Off Principal Balance Outstanding	85.027840	%
Controlling Class Information
The Controlling Class is Class H.
The Controlling Class Representative is Investin Pro RED Holdings, LLC
There Are No Disclosable Special Servicer Fees.


Reports Available at sf.citidirect.com	v. 21.09.28	Page 8 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2026


Anticipated Remaining Term

Anticipated Remaining	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

60 Months or Less	47	800,606,049.27	100.00	4.1113	13	2.130556
61 to 90 Months	0	0.00	0.00	0.0000	0	0.000000
91 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	47	800,606,049.27	100.00	4.1113	13	2.130556

Debt Service Coverage Ratio

Debt Service Coverage	Asset	Ending Scheduled	% of			Wtd Avg
Ratio Range	Count	Balance	Agg.Bal. WAC		WAM	DSCR

1.250 or Less	9	155,729,309.81	19.45	3.8196	13	0.366860
1.251 to 1.500	4	81,207,165.06	10.14	4.6608	13	1.388363
1.501 to 1.750	7	63,557,945.45	7.94	4.5035	9	1.684914
1.751 to 2.000	3	53,322,776.84	6.66	4.3605	13	1.867215
2.001 to 2.250	7	142,658,543.11	17.82	4.1645	13	2.092305
2.251 to 2.500	5	68,149,103.36	8.51	3.8990	13	2.395730
2.501 to 2.750	2	29,222,979.76	3.65	4.7240	14	2.500900
2.751 to 3.000	2	26,696,780.96	3.33	4.4163	14	2.943952
3.001 to 3.250	3	37,874,444.92	4.73	4.1212	13	3.061703
3.251 to 3.500	1	7,730,000.00	0.97	4.4050	14	3.384900
3.501 to 3.750	0	0.00	0.00	0.0000	0	0.000000
3.751 to 4.000	2	61,500,000.00	7.68	3.8911	13	3.841765
4.001 or Greater	2	72,957,000.00	9.11	3.4852	13	4.624392
Total	47	800,606,049.27	100.00	4.1113	13	2.130556


Reports Available at sf.citidirect.com	v. 21.09.28	Page 9 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2026


Ending Schedule Balance

Ending Schedule Balance	Asset	Ending Scheduled	% of			Wtd Avg
Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

1 to 5,000,000	6	21,773,835.05	2.72	4.6741	13	1.718660
10,000,001 to 15,000,000	4	52,013,607.36	6.50	4.1634	12	1.419639
15,000,001 to 20,000,000	2	30,700,000.00	3.83	3.3795	13	-0.660290
20,000,001 to 25,000,000	9	200,236,929.26	25.01	4.0634	12	2.659240
25,000,001 to 30,000,000	2	59,222,979.76	7.40	4.5427	14	2.290526
30,000,001 to 35,000,000	0	0.00	0.00	0.0000	0	0.000000
35,000,001 to 40,000,000	2	77,500,000.00	9.68	3.6932	13	1.969548
40,000,001 to 45,000,000	1	41,700,000.00	5.21	4.3200	14	1.862300
45,000,001 to 50,000,000	1	45,712,334.43	5.71	4.6300	14	1.408900
5,000,001 to 10,000,000	15	110,126,590.72	13.76	4.5347	13	2.030103
50,000,001 to 55,000,000	2	102,619,772.69	12.82	3.7706	13	3.008697
55,000,001 to 60,000,000	1	59,000,000.00	7.37	3.7700	14	2.027000
60,000,001 to 65,000,000	0	0.00	0.00	0.0000	0	0.000000
65,000,001 to 70,000,000	0	0.00	0.00	0.0000	0	0.000000
70,000,001 to 75,000,000	0	0.00	0.00	0.0000	0	0.000000
75,000,001 to 80,000,000	0	0.00	0.00	0.0000	0	0.000000
80,000,001 to 85,000,000	0	0.00	0.00	0.0000	0	0.000000
85,000,000+	0	0.00	0.00	0.0000	0	0.000000
Total	47	800,606,049.27	100.00	4.1113	13	2.130556


Reports Available at sf.citidirect.com	v. 21.09.28	Page 10 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2026


Loan Rate

	Asset	Ending Scheduled	% of			Wtd Avg
Loan Rate Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

4.00 or Less	12	312,157,000.00	38.99	3.6095	13	2.432635
4.01 to 4.25	7	142,089,415.14	17.75	4.1442	11	1.886485
4.26 to 4.50	12	159,603,384.32	19.94	4.3758	13	2.279494
4.51 to 4.75	9	145,589,653.05	18.18	4.6456	13	1.793390
4.76 to 5.00	6	37,240,951.66	4.65	4.8643	12	1.271451
5.01 to 5.25	1	3,925,645.10	0.49	5.1100	13	1.543400
5.26 to 5.50	0	0.00	0.00	0.0000	0	0.000000
5.51 to 5.75	0	0.00	0.00	0.0000	0	0.000000
5.76 to 6.00	0	0.00	0.00	0.0000	0	0.000000
6.01 to 6.25	0	0.00	0.00	0.0000	0	0.000000
6.26 to 6.50	0	0.00	0.00	0.0000	0	0.000000
6.51 to 6.75	0	0.00	0.00	0.0000	0	0.000000
6.76 to 7.00	0	0.00	0.00	0.0000	0	0.000000
7.01 or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	47	800,606,049.27	100.00	4.1113	13	2.130556

Property Type

	Asset	Ending Scheduled	% of			Wtd Avg
Property Type Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

Industrial	0	0.00	0.00	0.0000	0	0.000000
Lodging	4	104,356,680.36	13.03	4.6233	14	2.042204
Mixed Use	7	152,300,000.00	19.02	3.7591	13	3.452644
Multifamily	3	71,220,338.24	8.90	4.2860	13	2.061330
Office	8	115,618,945.23	14.44	4.2402	13	0.942467
Other	4	78,200,000.00	9.77	3.4958	13	0.321056
Retail	11	182,846,211.21	22.84	4.1370	12	2.159581
Self Storage	9	90,321,710.00	11.28	4.2405	13	3.081237
Total	47	800,606,049.27	100.00	4.1113	13	2.130556


Reports Available at sf.citidirect.com	v. 21.09.28	Page 11 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2026


Remaining Amortization Term

Remaining Amortization	Asset	Ending Scheduled	% of			Wtd Avg
Term Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

240 Months or Less	24	557,233,084.43	69.60	3.9340	13	2.274423
241 to 270 Months	23	243,372,964.84	30.40	4.5172	13	1.801157
271 to 300 Months	0	0.00	0.00	0.0000	0	0.000000
301 Months or Greater	0	0.00	0.00	0.0000	0	0.000000
Total	47	800,606,049.27	100.00	4.1113	13	2.130556

Seasoning

	Asset	Ending Scheduled	% of			Wtd Avg
Seasoning Range	Count	Balance	Agg.Bal.	WAC	WAM	DSCR

12 Months or Less	0	0.00	0.00	0.0000	0	0.000000
13 to 24 Months	0	0.00	0.00	0.0000	0	0.000000
25 to 36 Months	0	0.00	0.00	0.0000	0	0.000000
37 to 48 Months	0	0.00	0.00	0.0000	0	0.000000
49 Months or Greater	47	800,606,049.27	100.00	4.1113	13	2.130556
Total	47	800,606,049.27	100.00	4.1113	13	2.130556


Reports Available at sf.citidirect.com	v. 21.09.28	Page 12 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

STRATIFICATION DETAIL

June 17, 2026


State

	Asset	Ending Scheduled	% of			Wtd Avg
State Range	Count	Balance	Agg.Bal. WAC WAM			DSCR

Alabama	0	0.00	0.00	0.0000	0	0.000000
Arizona	0	0.00	0.00	0.0000	0	0.000000
California	3	74,153,952.90	9.26	4.3736	13	2.225766
Florida	4	31,605,000.00	3.95	4.2439	13	2.899627
Georgia	0	0.00	0.00	0.0000	0	0.000000
Illinois	3	15,824,856.33	1.98	4.8542	13	1.034051
Indiana	1	4,591,413.01	0.57	4.7900	13	1.231500
Kansas	1	12,847,686.02	1.60	4.8500	10	1.408000
Kentucky	0	0.00	0.00	0.0000	0	0.000000
Maryland	0	0.00	0.00	0.0000	0	0.000000
Michigan	1	21,049,398.30	2.63	4.5900	14	1.339600
N/A	3	67,700,000.00	8.46	3.4300	13	0.000000
Nevada	1	0.00	0.00	0.0000	0	0.000000
New Jersey	0	0.00	0.00	0.0000	0	0.000000
New York	11	228,570,350.69	28.55	3.9263	13	2.614575
North Carolina	0	0.00	0.00	0.0000	0	0.000000
Ohio	1	6,997,838.24	0.87	4.4890	13	2.436700
Pennsylvania	1	23,000,000.00	2.87	4.0510	13	3.024400
Texas	5	53,654,228.06	6.70	4.3786	13	1.939199
Various	0	0.00	0.00	0.0000	0	0.000000
Total	47	800,606,049.27	100.00	4.1113	13	2.130556


Reports Available at sf.citidirect.com	v. 21.09.28	Page 13 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

MORTGAGE LOAN DETAIL

June 17, 2026


			Prop			Paid					Beginning	Ending		Payment Workout Mod
			Type			Through	Gross		Interest	Principal	Scheduled	Scheduled	Maturity	Status		Strategy Code
Loan ID	OMCR		(1)	City	State	Date	Coupon		Payment	Payment	Balance	Balance	Date	(2	)	(3	)	(4	)

304101882	1		MU	New York	NY	06/09/2026	3.43000	%	73,840.28	-	25,000,000.00	25,000,000.00	06/09/2027	0		0		0
304101843	10		RT	New York	NY	06/06/2026	4.36600	%	112,788.33	-	30,000,000.00	30,000,000.00	08/06/2027	0		0		0
1749262	11		OF	Troy	MI	06/01/2026	4.59000	%	83,376.70	45,275.09	21,094,673.39	21,049,398.30	08/01/2027	0		0		0
1647690	12		RT	Various	XX	06/01/2026	4.19000	%	88,528.15	-	24,536,250.00	24,536,250.00	11/01/2026	0		0		0
1749833	13		LO	Lafayette	LA	06/01/2026	4.42000	%	76,945.51	44,524.70	20,216,305.66	20,171,780.96	08/01/2027	0		0		8
300801642	14		MU	Lahaska	PA	06/01/2026	4.05100	%	80,232.31	-	23,000,000.00	23,000,000.00	07/01/2027	0		0		0
1749778	15		MF	Dallas	TX	06/01/2026	4.16000	%	80,680.60	-	22,522,500.00	22,522,500.00	07/01/2027	0		0		0
304101831	16		MU	Corona	NY	06/06/2026	4.36000	%	82,597.78	-	22,000,000.00	22,000,000.00	07/06/2027	0		0		0
300801633	17		MU	New Rochelle	NY	06/01/2026	3.80000	%	70,352.78	-	21,500,000.00	21,500,000.00	07/01/2027	0		0		0
308511018	18		RT	Torrance	CA	06/01/2026	3.65750	%	64,429.61	-	20,457,000.00	20,457,000.00	06/01/2027	0		0		0
304101851	19		OF	New York	NY	06/06/2026	3.33000	%	44,446.25	-	15,500,000.00	15,500,000.00	08/06/2027	0		0		0
304101891	1	A	N/A			06/09/2026	3.43000	%	44,304.17	-	15,000,000.00	15,000,000.00	06/09/2027	0		0		0
453011619	1	B	N/A			06/09/2026	3.43000	%	44,894.89	-	15,200,000.00	15,200,000.00	06/09/2027	0		0		0
453011576	1	C	N/A			06/09/2026	3.43000	%	110,760.42	-	37,500,000.00	37,500,000.00	06/09/2027	0		0		0
1749343	2		RT	Metairie	LA	06/01/2026	3.77000	%	191,536.94	-	59,000,000.00	59,000,000.00	08/01/2027	0		0		0
300801632	20		OF	Wichita	KS	06/01/2026	4.85000	%	53,768.46	26,704.54	12,874,390.56	12,847,686.02	04/01/2027	0		0		0
304101858	21		SS	Various	XX	06/06/2026	4.51000	%	53,166.10	23,940.41	13,689,861.75	13,665,921.34	08/06/2027	0		0		0
1749084	22		RT	Plano	TX	06/01/2026	4.64000	%	29,782.91	42,322.36	7,454,010.37	7,411,688.01	08/01/2027	0		0		0
1648607	24		LO	El Paso	TX	06/01/2026	4.71500	%	37,633.84	19,515.54	9,269,100.75	9,249,585.21	08/01/2027	0		8		8
1749362	25		OF	Houston	TX	06/01/2026	4.25000	%	33,187.40	20,606.23	9,068,284.23	9,047,678.00	07/01/2027	0		0		0
304101839	26		N/A	Maitland	FL	06/06/2026	3.92000	%	35,443.33	-	10,500,000.00	10,500,000.00	07/06/2027	0		0		0
203041833	29		MU	Reno	NV	06/06/2026	4.25906	%	34,251.51	9,339,138.73	9,339,138.73	-	07/06/2027	0		0		0
1749761	3		OF	Milwaukee	WI	06/01/2026	4.14000	%	179,012.43	94,093.48	50,213,866.17	50,119,772.69	07/01/2027	0		0		0
304101859	30		RT	Chicago	IL	01/06/2020	4.91000	%	-	-	8,770,446.11	8,770,446.11	08/06/2027	3		2		0
304101862	31		RT	Ka'anapali	HI	06/06/2026	4.08000	%	28,245.73	15,137.77	8,039,582.69	8,024,444.92	08/06/2027	0		0		0
308511032	32		RT	Hercules	CA	06/06/2026	4.74000	%	32,638.11	11,650.69	7,996,269.16	7,984,618.47	08/06/2027	0		0		0
1749956	33		MU	Brooklyn	NY	06/01/2026	4.40000	%	31,447.78	-	8,300,000.00	8,300,000.00	04/01/2027	0		0		0
300801641	34		MF	Marysville	OH	06/01/2026	4.48900	%	27,098.16	12,372.33	7,010,210.57	6,997,838.24	07/01/2027	0		0		0
300801651	35		SS	Miami Gardens	FL	06/01/2026	4.40500	%	29,321.39	-	7,730,000.00	7,730,000.00	08/01/2027	0		0		0
300801648	36		SS	Hialeah	FL	06/01/2026	4.40500	%	25,983.38	-	6,850,000.00	6,850,000.00	08/01/2027	0		0		0
300801649	37		SS	Hialeah	FL	06/01/2026	4.40500	%	24,750.59	-	6,525,000.00	6,525,000.00	08/01/2027	0		0		0
1749521	38		RT	Saugerties	NY	06/01/2026	4.73000	%	23,945.22	8,582.44	5,878,933.13	5,870,350.69	08/01/2027	0		0		0


Reports Available at sf.citidirect.com	v. 21.09.28	Page 14 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

MORTGAGE LOAN DETAIL

June 17, 2026


		Prop			Paid					Beginning	Ending		Payment Workout Mod
		Type			Through	Gross		Interest	Principal	Scheduled	Scheduled	Maturity	Status Strategy Code
Loan ID	OMCR	(1)	City	State	Date	Coupon		Payment	Payment	Balance	Balance	Date	(2	)	(3	)	(4	)

304101856	39	RT	Brooklyn	NY	06/06/2026	4.45000	%	23,758.06	-	6,200,000.00	6,200,000.00	08/06/2027	0		0		0
304101861	4	LO	San Diego	CA	06/06/2026	4.63000	%	182,710.97	114,982.64	45,827,317.07	45,712,334.43	08/06/2027	0		8		8
300801659	40	MH	Brookings	OR	06/01/2026	4.92000	%	24,361.90	8,086.62	5,750,250.85	5,742,164.23	08/01/2027	0		0		0
304101838	41	SS	Balch Springs	TX	06/06/2026	4.57000	%	21,377.33	9,452.65	5,432,229.49	5,422,776.84	07/06/2027	0		0		0
300801640	42	SS	Castle Rock	CO	06/01/2026	4.23500	%	17,680.96	9,572.99	4,848,342.52	4,838,769.53	07/01/2027	0		0		0
1749567	43	RT	Goshen	IN	06/01/2026	4.79000	%	18,972.45	8,278.73	4,599,691.74	4,591,413.01	07/01/2027	0		0		0
1749823	45	OF	Barrington	IL	06/01/2026	5.11000	%	17,308.39	7,831.46	3,933,476.56	3,925,645.10	07/01/2027	0		0		0
300801653	46	SS	Shreveport	LA	06/01/2026	4.77300	%	15,199.63	6,637.06	3,698,133.04	3,691,495.98	08/01/2027	0		0		0
300801652	47	OF	Skokie	IL	06/01/2026	4.37700	%	11,815.24	6,013.46	3,134,778.58	3,128,765.12	08/01/2027	0		0		0
300801650	48	SS	Baton Rouge	LA	06/01/2026	4.95300	%	6,826.40	2,784.75	1,600,531.06	1,597,746.31	08/01/2027	0		0		0
300801657	5	MU	Bronx	NY	06/01/2026	3.41800	%	154,522.08	-	52,500,000.00	52,500,000.00	08/01/2027	0		0		0
304101849	7	MF	New York	NY	06/06/2026	4.32000	%	155,124.00	-	41,700,000.00	41,700,000.00	08/06/2027	0		0		0
308511008	8	SS	Various	XX	06/06/2026	3.94000	%	135,711.11	-	40,000,000.00	40,000,000.00	07/06/2027	0		0		0
300801656	9	LO	Various	XX	06/01/2026	4.72400	%	119,107.99	57,069.56	29,280,049.32	29,222,979.76	08/01/2027	0		0		0
Total	Count = 46							2,833,867.57	9,934,574.23	810,540,623.50	800,606,049.27


Reports Available at sf.citidirect.com	v. 21.09.28	Page 15 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

NOI DETAIL

June 17, 2026


			Property			Ending	Preceding	Most		Most Recent	Most Recent
			Type			Scheduled	Fiscal	Recent		Financial As of	Financial Asof
Loan ID	OMCR		(1)	City	State	Balance	Year NOI	NOI		Start Date	End Date

304101882	1		MU	New York	NY	25,000,000.00	196,065,501.36	49,788,189.87		01/01/2026	03/31/2026
304101843	10		RT	New York	NY	30,000,000.00	2,522,805.10	694,903.23		01/01/2026	03/31/2026
1749262	11		OF	Troy	MI	21,049,398.30	2,467,255.82	1,962,041.19		Not Available	Not Available
1647690	12		RT	Various	XX	24,536,250.00	2,217,032.35	1,666,354.93		Not Available	Not Available
1749833	13		LO	Lafayette	LA	20,171,780.96	4,791,500.40	4,878,994.57		04/01/2025	03/31/2026
300801642	14		MU	Lahaska	PA	23,000,000.00	2,713,934.85	1,512,500.63		Not Available	Not Available
1749778	15		MF	Dallas	TX	22,522,500.00	2,477,603.63	571,367.01		01/01/2026	03/31/2026
304101831	16		MU	Corona	NY	22,000,000.00	2,144,289.13	545,892.88		01/01/2026	03/31/2026
300801633	17		MU	New Rochelle	NY	21,500,000.00	3,471,391.28	2,671,006.57		Not Available	Not Available
308511018	18		RT	Torrance	CA	20,457,000.00	60,987,298.00	44,992,864.00		Not Available	Not Available
304101851	19		OF	New York	NY	15,500,000.00	646,698.51	(119,489.48	)	Not Available	Not Available
304101891	1	A	N/A			15,000,000.00	-	-		Not Available	Not Available
453011619	1	B	N/A			15,200,000.00	-	-		Not Available	Not Available
453011576	1	C	N/A			37,500,000.00	-	-		Not Available	Not Available
1749343	2		RT	Metairie	LA	59,000,000.00	17,420,567.00	11,283,383.00		Not Available	Not Available
300801632	20		OF	Wichita	KS	12,847,686.02	1,230,397.39	1,088,531.98		Not Available	Not Available
304101858	21		SS	Various	XX	13,665,921.34	2,086,269.09	1,571,271.71		Not Available	Not Available
1749084	22		RT	Plano	TX	7,411,688.01	1,272,584.00	966,211.00		Not Available	Not Available
1648607	24		LO	El Paso	TX	9,249,585.21	1,562,725.43	1,491,931.17		04/01/2025	03/31/2026
1749362	25		OF	Houston	TX	9,047,678.00	948,588.95	773,888.91		Not Available	Not Available
304101839	26		N/A	Maitland	FL	10,500,000.00	974,545.00	246,048.00		01/01/2026	03/31/2026
1749761	3		OF	Milwaukee	WI	50,119,772.69	8,419,149.61	6,348,293.67		Not Available	Not Available
304101859	30		RT	Chicago	IL	8,770,446.11	146,501.00	182,950.00		Not Available	Not Available
304101862	31		RT	Ka'anapali	HI	8,024,444.92	1,079,315.57	866,006.35		01/01/2025	06/30/2025
308511032	32		RT	Hercules	CA	7,984,618.47	917,378.00	691,702.33		Not Available	Not Available
1749956	33		MU	Brooklyn	NY	8,300,000.00	571,362.05	446,253.29		Not Available	Not Available
300801641	34		MF	Marysville	OH	6,997,838.24	1,145,624.06	296,822.83		01/01/2026	03/31/2026
300801651	35		SS	Miami Gardens	FL	7,730,000.00	1,196,014.70	291,700.72		01/01/2026	03/31/2026
300801648	36		SS	Hialeah	FL	6,850,000.00	1,014,791.11	237,334.37		01/01/2026	03/31/2026
300801649	37		SS	Hialeah	FL	6,525,000.00	863,144.35	211,818.55		01/01/2026	03/31/2026
1749521	38		RT	Saugerties	NY	5,870,350.69	720,818.42	531,853.00		Not Available	Not Available
304101856	39		RT	Brooklyn	NY	6,200,000.00	505,146.03	386,997.25		Not Available	Not Available
Reports Available at sf.citidirect.com			v. 21.09.28			Page 16 of 44				© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

NOI DETAIL

June 17, 2026


		Property			Ending	Preceding	Most	Most Recent	Most Recent
		Type			Scheduled	Fiscal	Recent	Financial As of	Financial Asof
Loan ID	OMCR	(1)	City	State	Balance	Year NOI	NOI	Start Date	End Date

304101861	4	LO	San Diego	CA	45,712,334.43	4,667,003.15	5,779,318.63	Not Available	Not Available
300801659	40	MH	Brookings	OR	5,742,164.23	792,245.45	654,255.59	Not Available	Not Available
304101838	41	SS	Balch Springs	TX	5,422,776.84	688,898.78	542,533.41	Not Available	Not Available
300801640	42	SS	Castle Rock	CO	4,838,769.53	697,896.91	332,335.03	01/01/2024	06/30/2024
1749567	43	RT	Goshen	IN	4,591,413.01	437,560.00	109,065.97	01/01/2026	03/31/2026
1749823	45	OF	Barrington	IL	3,925,645.10	459,232.01	129,090.11	01/01/2026	03/31/2026
300801653	46	SS	Shreveport	LA	3,691,495.98	466,900.54	226,954.97	Not Available	Not Available
300801652	47	OF	Skokie	IL	3,128,765.12	611,975.54	147,692.74	01/01/2026	03/31/2026
300801650	48	SS	Baton Rouge	LA	1,597,746.31	151,113.47	78,499.57	Not Available	Not Available
300801657	5	MU	Bronx	NY	52,500,000.00	9,159,142.18	6,826,393.36	Not Available	Not Available
304101849	7	MF	New York	NY	41,700,000.00	3,279,413.28	843,580.81	01/01/2026	03/31/2026
308511008	8	SS	Various	XX	40,000,000.00	11,952,614.75	3,040,439.60	01/01/2026	03/31/2026
300801656	9	LO	Various	XX	29,222,979.76	5,798,427.96	5,906,299.46	04/01/2025	03/31/2026
Total	Count = 45				800,606,049.27	361,742,656.21	161,694,082.78


Reports Available at sf.citidirect.com	v. 21.09.28	Page 17 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

DELINQUENCY LOAN DETAIL

June 17, 2026

Actual

Paid

Current P&I

Total P&I

Cumulative

Other Expense

Payment Workout

Most Recent

Principal

Through

Advances

Accrued Unpaid

Advances

Status

Strategy

Special Serv

Foreclosure

Bankruptcy

REO

Loan ID

OMCR

Balance

Date

(Net of ASER)

Outstanding

Interest Advances

Outstanding

)

Transfer Date

Date

304101859

9,401,987.23

01/06/2020

216,654.44

98,934.77

01/21/2020


Reports Available at sf.citidirect.com	v. 21.09.28	Page 18 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

COLLATERAL PERFORMANCE - DELINQUENCY AND LOAN STATUS DETAIL

–

June 17, 2026


							Delinquent
					(Does not include loans in Bankruptcy, Foreclosure, or REO)

			30	Day			60	Day			90	Day	120			+ Day	Bankruptcy				Foreclosure						REO

Distribution

Date	Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count		Balance		Count			Balance


	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
06/17/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.2	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
05/15/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.2	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
04/17/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
03/17/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
02/18/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
01/16/2026
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
12/17/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
11/18/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
10/20/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
09/17/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
08/15/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%

	0		0		0		0		0		0		1		8,770,446		0		0		0		0		0			0
07/17/2025
	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	2.1	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%	0.0	%		0.0	%


Reports Available at sf.citidirect.com	v. 21.09.28	Page 19 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

6/17/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,876,491.98	04/13/2026	-	571,999.49
5/15/2026	1647637	27	Clinton Crossings Medical Office	4,773,206.40	-	-	09/11/2025	-	-
5/15/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,876,491.98	04/13/2026	-	571,999.49
4/17/2026	1647637	27	Clinton Crossings Medical Office	5,432,179.86	4,773,206.40	-	09/11/2025	-	-
4/17/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,876,491.98	04/13/2026	-	571,999.49
3/17/2026	1647637	27	Clinton Crossings Medical Office	5,470,484.83	5,432,179.86	-	09/11/2025	-	-
3/17/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
2/18/2026	1647637	27	Clinton Crossings Medical Office	5,506,705.17	5,470,484.83	-	09/11/2025	-	-
2/18/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
1/16/2026	1647637	27	Clinton Crossings Medical Office	5,542,792.51	5,506,705.17	-	09/11/2025	-	-
1/16/2026	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
12/17/2025	1647637	27	Clinton Crossings Medical Office	5,579,408.23	5,542,792.51	-	09/11/2025	-	-
12/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
11/18/2025	1647637	27	Clinton Crossings Medical Office	5,615,228.60	5,579,408.23	-	09/11/2025	-	-
11/18/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
10/20/2025	1647637	27	Clinton Crossings Medical Office	5,651,586.88	5,615,228.60	-	11/12/2024	-	-
10/20/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
9/17/2025	1647637	27	Clinton Crossings Medical Office	5,687,142.21	5,651,586.88	-	11/12/2024	-	-
9/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
8/15/2025	1647637	27	Clinton Crossings Medical Office	5,722,566.98	5,687,142.21	-	11/12/2024	-	-
8/15/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
7/17/2025	1647637	27	Clinton Crossings Medical Office	5,758,543.78	5,722,566.98	-	11/12/2024	-	-
7/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
6/17/2025	1647637	27	Clinton Crossings Medical Office	8,316,178.80	5,758,543.78	-	11/12/2024	-	-
6/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
5/16/2025	1647637	27	Clinton Crossings Medical Office	8,342,937.93	8,316,178.80	-	11/12/2024	-	-
5/16/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
4/17/2025	1647637	27	Clinton Crossings Medical Office	8,368,610.56	8,342,937.93	-	11/12/2024	-	-
4/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
3/17/2025	1647637	27	Clinton Crossings Medical Office	8,397,172.91	8,368,610.56	-	11/12/2024	-	-
3/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49
2/18/2025	1647637	27	Clinton Crossings Medical Office	8,422,646.39	8,397,172.91	-	11/12/2024	-	-
2/18/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	7,228,068.59	02/11/2025	-	571,999.49


Reports Available at sf.citidirect.com	v. 21.09.28	Page 21 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount	ASER Amount

1/17/2025	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
12/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
11/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
10/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
9/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
8/16/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
7/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
6/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
5/17/2024	1647637	27	Clinton Crossings Medical Office	8,651,745.34	8,626,087.62	-	12/11/2023	-	-
5/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
4/17/2024	1647637	27	Clinton Crossings Medical Office	8,676,284.02	8,651,745.34	-	12/11/2023	-	-
4/17/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
3/15/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
2/16/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	6,077,655.10	02/12/2024	-	571,999.49
1/18/2024	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
12/15/2023	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
11/17/2023	304101859	30	4901 West Irving Park	8,770,446.11	8,770,446.11	4,876,065.98	02/13/2023	-	571,999.49
10/17/2023	304101859	30	4901 West Irving Park	8,786,300.63	8,770,446.11	4,876,065.98	02/13/2023	19,930.92	571,999.49
9/15/2023	304101859	30	4901 West Irving Park	8,800,895.09	8,786,300.63	4,876,065.98	02/13/2023	20,595.28	552,068.57
8/17/2023	304101859	30	4901 West Irving Park	8,815,428.10	8,800,895.09	4,876,065.98	02/13/2023	20,595.28	531,473.29
7/17/2023	304101859	30	4901 West Irving Park	8,831,099.32	8,815,428.10	4,876,065.98	02/13/2023	19,930.92	510,878.01
6/16/2023	304101859	30	4901 West Irving Park	8,845,505.16	8,831,099.32	4,876,065.98	02/13/2023	20,595.29	490,947.09
5/17/2023	304101859	30	4901 West Irving Park	8,861,053.81	8,845,505.16	4,876,065.98	02/13/2023	19,930.92	470,351.80
4/17/2023	1647637	27	Clinton Crossings Medical Office	8,969,923.99	8,946,467.53	-	12/12/2022	-	-
4/17/2023	304101859	30	4901 West Irving Park	8,875,333.54	8,861,053.81	4,876,065.98	02/13/2023	20,595.28	450,420.88
3/17/2023	304101859	30	4901 West Irving Park	8,893,176.62	8,875,333.54	4,876,065.98	02/13/2023	18,602.19	429,825.60
2/17/2023	304101859	30	4901 West Irving Park	8,907,321.10	8,893,176.62	4,876,065.98	02/13/2023	20,595.29	411,223.41
1/18/2023	304101859	30	4901 West Irving Park	8,921,406.03	8,907,321.10	3,964,600.49	02/11/2022	16,745.48	390,628.12
12/16/2022	304101859	30	4901 West Irving Park	8,936,645.39	8,921,406.03	3,964,600.49	02/11/2022	16,205.30	373,882.64
11/18/2022	304101859	30	4901 West Irving Park	8,950,606.86	8,936,645.39	3,964,600.49	02/11/2022	16,745.48	357,677.34
10/17/2022	304101859	30	4901 West Irving Park	8,965,727.22	8,950,606.86	3,964,600.49	02/11/2022	16,205.30	340,931.86
9/16/2022	304101859	30	4901 West Irving Park	8,979,566.25	8,965,727.22	3,964,600.49	02/11/2022	16,745.48	324,726.56
8/17/2022	304101859	30	4901 West Irving Park	8,993,347.01	8,979,566.25	3,964,600.49	02/11/2022	16,745.48	307,981.08


Reports Available at sf.citidirect.com	v. 21.09.28	Page 22 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent		Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance Scheduled Balance Reduction Amount Reduction Date				ASER Amount		ASER Amount

7/15/2022	304101859	30	4901 West Irving Park	9,008,293.21	8,993,347.01	3,964,600.49	02/11/2022	16,205.31		291,235.60
6/17/2022	304101859	30	4901 West Irving Park	9,021,953.02	9,008,293.21	3,964,600.49	02/11/2022	16,745.48		275,030.29
5/17/2022	304101859	30	4901 West Irving Park	9,036,782.65	9,021,953.02	3,964,600.49	02/11/2022	16,205.30		258,284.81
4/15/2022	304101859	30	4901 West Irving Park	9,050,322.51	9,036,782.65	3,964,600.49	02/11/2022	16,745.48		242,079.51
3/17/2022	304101859	30	4901 West Irving Park	9,067,499.87	9,050,322.51	3,964,600.49	02/11/2022	15,124.95		225,334.03
2/17/2022	304101859	30	4901 West Irving Park	9,080,910.41	9,067,499.87	3,964,600.49	02/11/2022	16,745.48		210,209.08
1/18/2022	304101859	30	4901 West Irving Park	9,094,264.48	9,080,910.41	2,716,535.50	03/11/2021	11,473.97		193,463.60
12/17/2021	304101859	30	4901 West Irving Park	9,108,799.44	9,094,264.48	2,716,535.50	03/11/2021	11,103.84		181,989.63
11/18/2021	304101859	30	4901 West Irving Park	9,122,036.09	9,108,799.44	2,716,535.50	03/11/2021	11,473.97		170,885.79
10/18/2021	304101859	30	4901 West Irving Park	9,136,457.88	9,122,036.09	2,716,535.50	03/11/2021	11,103.84		159,411.82
9/17/2021	304101859	30	4901 West Irving Park	9,149,578.09	9,136,457.88	2,716,535.50	03/11/2021	11,473.97		148,307.98
8/17/2021	304101859	30	4901 West Irving Park	9,162,643.06	9,149,578.09	2,716,535.50	03/11/2021	11,473.97		136,834.01
7/16/2021	304101859	30	4901 West Irving Park	9,176,899.38	9,162,643.06	2,716,535.50	03/11/2021	11,103.84		125,360.04
6/17/2021	304101859	30	4901 West Irving Park	9,189,849.32	9,176,899.38	2,716,535.50	03/11/2021	11,473.97		114,256.20
5/17/2021	304101859	30	4901 West Irving Park	9,203,994.77	9,189,849.32	2,716,535.50	03/11/2021	11,103.84		102,782.23
5/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,238,198.79	52,142,057.56	-		(152,355.24	)	-
4/16/2021	304101859	30	4901 West Irving Park	9,216,830.63	9,203,994.77	2,716,535.50	03/11/2021	11,473.97		91,678.39
4/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,327,266.50	52,238,198.79	13,176,669.56	12/11/2020	-		152,355.24
3/17/2021	1648607	24	Hotel Indigo El Paso	10,395,520.76	10,376,494.06	-		(10,601.99	)	-
3/17/2021	304101859	30	4901 West Irving Park	9,233,374.53	9,216,830.63	2,716,535.50	03/11/2021	10,363.58		80,204.42
3/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,436,131.77	52,327,266.50	13,176,669.56	12/11/2020	47,399.41		152,355.24
2/18/2021	1648607	24	Hotel Indigo El Paso	10,410,402.46	10,395,520.76	-	12/11/2020	-		10,601.99
2/18/2021	304101859	30	4901 West Irving Park	9,246,086.69	9,233,374.53	1,675,140.96	04/13/2020	7,075.38		69,840.84
2/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,524,413.46	52,436,131.77	13,176,669.56	12/11/2020	52,477.92		104,955.83
1/15/2021	1648607	24	Hotel Indigo El Paso	10,425,223.98	10,410,402.46	-	12/11/2020	-		10,601.99
1/15/2021	304101859	30	4901 West Irving Park	9,258,745.33	9,246,086.69	1,675,140.96	04/13/2020	7,075.38		62,765.46
1/15/2021	304101861	4	Old Town San Diego Hotel Portfolio	52,612,344.58	52,524,413.46	13,176,669.56	12/11/2020	52,477.91		52,477.91
12/17/2020	1648607	24	Hotel Indigo El Paso	10,441,347.57	10,425,223.98	-	12/11/2020	-		10,601.99
12/17/2020	304101859	30	4901 West Irving Park	9,272,610.03	9,258,745.33	1,675,140.96	04/13/2020	6,847.14		55,690.08
12/17/2020	304101861	4	Old Town San Diego Hotel Portfolio	52,706,678.26	52,612,344.58	13,176,669.56	12/11/2020	-		-
11/18/2020	1648607	24	Hotel Indigo El Paso	10,456,043.96	10,441,347.57	2,614,010.99	11/12/2020	10,601.99		10,601.99
11/18/2020	304101859	30	4901 West Irving Park	9,285,157.00	9,272,610.03	1,675,140.96	04/13/2020	7,075.38		48,842.94
10/19/2020	304101859	30	4901 West Irving Park	9,298,914.07	9,285,157.00	1,675,140.96	04/13/2020	6,847.14		41,767.56


Reports Available at sf.citidirect.com	v. 21.09.28	Page 23 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL APPRAISAL REDUCTION DETAIL

June 17, 2026


Distribution				Beginning	Ending	Appraisal	Appraisal	Most Recent	Cumulative
Date	Loan ID	OMCR	Property Name	Scheduled Balance	Scheduled Balance	Reduction Amount	Reduction Date	ASER Amount	ASER Amount

9/17/2020	304101859	30	4901 West Irving Park	9,311,350.29	9,298,914.07	1,675,140.96	04/13/2020	7,075.38	34,920.42
8/17/2020	304101859	30	4901 West Irving Park	9,323,734.15	9,311,350.29	1,675,140.96	04/13/2020	7,075.38	27,845.04
7/17/2020	304101859	30	4901 West Irving Park	9,337,334.02	9,323,734.15	1,675,140.96	04/13/2020	6,847.14	20,769.66
6/17/2020	304101859	30	4901 West Irving Park	9,349,608.49	9,337,334.02	1,675,140.96	04/13/2020	7,075.38	13,922.52
5/15/2020	304101859	30	4901 West Irving Park	9,363,102.92	9,349,608.49	1,675,140.96	04/13/2020	6,847.14	6,847.14
4/17/2020	304101859	30	4901 West Irving Park	9,375,268.89	9,363,102.92	1,675,140.96	04/13/2020	-	-


Reports Available at sf.citidirect.com	v. 21.09.28	Page 24 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

06/17/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/15/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/15/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/15/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/18/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/18/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/18/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/16/2026	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/16/2026	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/16/2026	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/20/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/20/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/20/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/15/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/15/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/15/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 26 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

07/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/16/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/16/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/16/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/18/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/18/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/18/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/17/2025	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/17/2025	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/17/2025	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 27 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

08/16/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/16/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/16/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/15/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/15/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/15/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/16/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/16/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/16/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2024	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2024	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2024	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/15/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/15/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/15/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 28 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

09/15/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/15/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/15/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/16/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/16/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/16/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/17/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/17/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/17/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2023	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2023	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2023	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/16/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/16/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/16/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
11/18/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 29 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

10/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/16/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/16/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/16/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/15/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/15/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/15/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/15/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/15/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/15/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
03/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
02/17/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/17/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/17/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
01/18/2022	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/18/2022	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/18/2022	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
12/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
12/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 30 of 44	© Copyright 2026 Citigroup

Citigroup Commercial Mortgage Trust 2017-B1

Commercial Mortgage Pass-Through Certificates, Series 2017-B1

HISTORICAL LOAN MODIFICATION DETAIL

June 17, 2026


Distribution				Modification	Modification
Date	Loan ID	OMCR	Property Name	Date	Code (4)

11/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
11/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
10/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
10/18/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
09/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
09/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
09/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
08/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
08/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
08/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
07/16/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
07/16/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
07/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
06/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
06/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
06/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
05/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
05/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
05/17/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
04/16/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
04/16/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
04/16/2021	304101861	4	Old Town San Diego Hotel Portfolio	06/01/2020	8
03/17/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
03/17/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
02/18/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
02/18/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
01/15/2021	1749833	13	DoubleTree Lafayette	04/01/2020	8
01/15/2021	1648607	24	Hotel Indigo El Paso	07/01/2020	8
12/17/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
11/18/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8
10/19/2020	1749833	13	DoubleTree Lafayette	04/01/2020	8


Reports Available at sf.citidirect.com	v. 21.09.28	Page 31 of 44	© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1											June 17, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing		Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount		Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments		Balance	Balance	Value	Date	Transfer Date	Return Date

05/15/2026	1647637	27	11	(192,500.00	)	-	-	16,000,000.00	08/05/2025	09/20/2021
04/17/2026	1647637	27	11	3,500.00		4,773,206.40	4,773,206.40	16,000,000.00	08/05/2025	09/20/2021
03/17/2026	1647637	27	11	3,500.00		5,432,179.86	5,470,484.83	16,000,000.00	08/05/2025	09/20/2021
02/18/2026	1647637	27	11	3,500.00		5,470,484.83	5,470,484.83	16,000,000.00	08/05/2025	09/20/2021
01/16/2026	1647637	27	11	3,500.00		5,506,705.17	5,506,705.17	16,000,000.00	08/05/2025	09/20/2021
12/17/2025	1647637	27	11	3,500.00		5,542,792.51	5,542,792.51	16,000,000.00	08/05/2025	09/20/2021
11/18/2025	1647637	27	11	3,500.00		5,579,408.23	5,615,228.60	16,000,000.00	08/05/2025	09/20/2021
10/20/2025	1647637	27	11	3,500.00		5,615,228.60	5,615,228.60	16,000,000.00	08/05/2025	09/20/2021
09/17/2025	1647637	27	11	3,500.00		5,651,586.88	5,687,142.21	16,000,000.00	08/05/2025	09/20/2021
08/15/2025	1647637	27	11	3,500.00		5,687,142.21	5,687,142.21	16,200,000.00	09/17/2024	09/20/2021
07/17/2025	1647637	27	11	3,500.00		5,722,566.98	5,722,566.98	16,200,000.00	09/17/2024	09/20/2021
06/17/2025	1647637	27	11	3,500.00		5,758,543.78	5,784,409.65	16,200,000.00	09/17/2024	09/20/2021
05/16/2025	1647637	27	11	3,500.00		8,316,178.80	8,316,178.80	16,200,000.00	09/17/2024	09/20/2021
04/17/2025	1647637	27	11	3,500.00		8,342,937.93	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
03/17/2025	1647637	27	11	3,500.00		8,368,610.56	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
02/18/2025	1647637	27	11	3,500.00		8,397,172.91	8,422,646.39	16,200,000.00	09/17/2024	09/20/2021
01/17/2025	1647637	27	11	3,500.00		8,422,646.39	8,448,026.33	16,200,000.00	09/17/2024	09/20/2021
12/17/2024	1647637	27	11	3,500.00		8,448,026.33	8,474,316.88	16,200,000.00	09/17/2024	09/20/2021
11/18/2024	1647637	27	11	3,500.00		8,474,316.88	8,499,507.08	16,200,000.00	09/17/2024	09/20/2021
10/18/2024	1647637	27	11	3,500.00		8,499,507.08	8,499,507.08	16,400,000.00	10/24/2023	09/20/2021
09/17/2024	1647637	27	11	3,500.00		8,525,614.66	8,525,614.66	16,400,000.00	10/24/2023	09/20/2021
08/16/2024	1647637	27	11	3,500.00		8,550,616.50	8,550,616.50	16,400,000.00	10/24/2023	09/20/2021
07/17/2024	1647637	27	11	3,500.00		8,575,526.53	8,575,526.53	16,400,000.00	10/24/2023	09/20/2021
06/17/2024	1647637	27	11	3,500.00		8,601,363.94	8,626,087.62	16,400,000.00	10/24/2023	09/20/2021
05/17/2024	1647637	27	11	3,500.00		8,626,087.62	8,626,087.62	16,400,000.00	10/24/2023	09/20/2021
04/17/2024	1647637	27	11	3,500.00		8,651,745.34	8,676,284.02	16,400,000.00	10/24/2023	09/20/2021
03/15/2024	1647637	27	11	3,500.00		8,676,284.02	8,676,284.02	16,400,000.00	10/24/2023	09/20/2021
02/16/2024	1647637	27	11	3,500.00		8,702,794.33	8,702,794.33	16,400,000.00	10/24/2023	09/20/2021
01/18/2024	1647637	27	11	3,500.00		8,727,145.56	8,751,407.37	16,400,000.00	10/24/2023	09/20/2021
12/15/2023	1647637	27	11	3,500.00		8,751,407.37	8,776,619.70	16,400,000.00	10/24/2023	09/20/2021
11/17/2023	1647637	27	11	3,500.00		8,776,619.70	8,776,619.70	18,200,000.00	12/01/2022	09/20/2021
10/17/2023	1647637	27	11	3,500.00		8,800,699.84	8,825,736.99	18,200,000.00	12/01/2022	09/20/2021
Reports Available at sf.citidirect.com			v. 21.09.28			Page 34 of 44				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

09/15/2023	1647637	27	11	3,500.00	8,825,736.99	8,825,736.99	18,200,000.00	12/01/2022	09/20/2021
08/17/2023	1647637	27	11	3,500.00	8,849,636.77	8,849,636.77	18,200,000.00	12/01/2022	09/20/2021
07/17/2023	1647637	27	11	3,500.00	8,873,448.79	8,898,227.39	18,200,000.00	12/01/2022	09/20/2021
06/16/2023	1647637	27	11	3,500.00	8,898,227.39	8,898,227.39	18,200,000.00	12/01/2022	09/20/2021
05/17/2023	1647637	27	11	3,500.00	8,921,860.99	8,946,467.53	18,200,000.00	12/01/2022	09/20/2021
04/17/2023	1647637	27	11	3,500.00	8,946,467.53	8,946,467.53	18,200,000.00	12/01/2022	09/20/2021
03/17/2023	1647637	27	11	3,500.00	8,969,923.99	8,969,923.99	18,200,000.00	12/01/2022	09/20/2021
02/17/2023	1647637	27	11	3,500.00	8,996,491.28	8,996,491.28	18,200,000.00	12/01/2022	09/20/2021
01/18/2023	1647637	27	11	3,500.00	9,019,764.05	9,019,764.05	18,200,000.00	12/01/2022	09/20/2021
12/16/2022	1647637	27	11	3,500.00	9,042,951.36	9,042,951.36	18,200,000.00	12/01/2022	09/20/2021
11/18/2022	1647637	27	11	3,500.00	9,067,127.55	9,067,127.55	17,100,000.00	05/05/2017	09/20/2021
10/17/2022	1647637	27	11	3,500.00	9,090,140.94	9,090,140.94	17,100,000.00	05/05/2017	09/20/2021
09/16/2022	1647637	27	11	3,500.00	9,114,149.42	9,114,149.42	17,100,000.00	05/05/2017	09/20/2021
08/17/2022	1647637	27	11	3,500.00	9,136,990.15	9,159,747.00	17,100,000.00	05/05/2017	09/20/2021
07/15/2022	1647637	27	11	3,500.00	9,159,747.00	9,183,508.10	17,100,000.00	05/05/2017	09/20/2021
06/17/2022	1647637	27	11	3,500.00	9,183,508.10	9,183,508.10	17,100,000.00	05/05/2017	09/20/2021
05/17/2022	1647637	27	11	3,500.00	9,206,094.14	9,252,106.98	17,100,000.00	05/05/2017	09/20/2021
04/15/2022	1647637	27	11	3,500.00	9,229,690.52	9,252,106.98	17,100,000.00	05/05/2017	09/20/2021
03/17/2022	1647637	27	11	3,500.00	9,252,106.98	9,277,738.03	17,100,000.00	05/05/2017	09/20/2021
02/17/2022	1647637	27	13	3,500.00	9,277,738.03	9,299,978.05	17,100,000.00	05/05/2017	09/20/2021
01/18/2022	1647637	27	13	3,500.00	9,299,978.05	9,299,978.05	17,100,000.00	05/05/2017	09/20/2021
12/17/2021	1647637	27	13	3,500.00	9,322,136.41	9,322,136.41	17,100,000.00	05/05/2017	09/20/2021
11/18/2021	1647637	27	13	3,500.00	9,345,320.38	9,345,320.38	17,100,000.00	05/05/2017	09/20/2021
10/18/2021	1647637	27	13	3,500.00	9,367,312.24	9,367,312.24	17,100,000.00	05/05/2017	09/20/2021
03/17/2021	1648607	24	8	-	10,376,494.06	10,376,494.06	12,800,000.00	09/28/2020	08/10/2020	02/11/2021
02/18/2021	1648607	24	1	-	10,395,520.76	10,395,520.76	12,800,000.00	09/28/2020	08/10/2020
01/15/2021	1648607	24	1	-	10,410,402.46	10,425,223.98	12,800,000.00	09/28/2020	08/10/2020
12/17/2020	1648607	24	1	-	10,425,223.98	10,516,958.99	12,800,000.00	09/28/2020	08/10/2020
11/18/2020	1648607	24	1	-	10,441,347.57	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
10/19/2020	1648607	24	1	-	10,456,043.96	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
09/17/2020	1648607	24	13	-	10,472,046.92	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
08/17/2020	1648607	24	13	-	10,486,619.17	10,531,349.63	20,700,000.00	02/01/2017	08/10/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 35 of 44				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

06/17/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	5,700,000.00	01/22/2026	01/21/2020
05/15/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	5,700,000.00	01/22/2026	01/21/2020
04/17/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	5,700,000.00	01/22/2026	01/21/2020
03/17/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
02/18/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
01/16/2026	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
12/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
11/18/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
10/20/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
09/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
08/15/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
07/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
06/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
05/16/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
04/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
03/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
02/18/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,100,000.00	01/14/2025	01/21/2020
01/17/2025	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
12/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
11/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
10/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
09/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
08/16/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
07/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
06/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
05/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
04/17/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
03/15/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
02/16/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	6,300,000.00	12/11/2023	01/21/2020
01/18/2024	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
12/15/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
11/17/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 36 of 44				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1										June 17, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing	Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount	Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments	Balance	Balance	Value	Date	Transfer Date	Return Date

10/17/2023	304101859	30	2	3,500.00	8,770,446.11	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
09/15/2023	304101859	30	2	3,500.00	8,786,300.63	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
08/17/2023	304101859	30	2	3,500.00	8,800,895.09	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
07/17/2023	304101859	30	2	3,500.00	8,815,428.10	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
06/16/2023	304101859	30	2	3,500.00	8,831,099.32	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
05/17/2023	304101859	30	2	3,500.00	8,845,505.16	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
04/17/2023	304101859	30	2	3,500.00	8,861,053.81	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
03/17/2023	304101859	30	2	3,500.00	8,875,333.54	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
02/17/2023	304101859	30	2	3,500.00	8,893,176.62	9,401,987.23	7,090,000.00	12/28/2022	01/21/2020
01/18/2023	304101859	30	2	3,500.00	8,907,321.10	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
12/16/2022	304101859	30	2	3,500.00	8,921,406.03	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
11/18/2022	304101859	30	2	3,500.00	8,936,645.39	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
10/17/2022	304101859	30	2	3,500.00	8,950,606.86	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
09/16/2022	304101859	30	2	3,500.00	8,965,727.22	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
08/17/2022	304101859	30	2	3,500.00	8,979,566.25	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
07/15/2022	304101859	30	2	3,500.00	8,993,347.01	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
06/17/2022	304101859	30	2	3,500.00	9,008,293.21	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
05/17/2022	304101859	30	2	3,500.00	9,021,953.02	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
04/15/2022	304101859	30	2	3,500.00	9,036,782.65	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
03/17/2022	304101859	30	2	3,500.00	9,050,322.51	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
02/17/2022	304101859	30	2	3,500.00	9,067,499.87	9,401,987.23	7,450,000.00	12/19/2021	01/21/2020
01/18/2022	304101859	30	2	3,500.00	9,080,910.41	9,401,987.23	8,330,000.00	01/14/2021	01/21/2020
12/17/2021	304101859	30	2	3,500.00	9,094,264.48	9,401,987.23	8,330,000.00	01/14/2021	01/21/2020
11/18/2021	304101859	30	2	3,500.00	9,108,799.44	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
10/18/2021	304101859	30	2	3,500.00	9,122,036.09	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
09/17/2021	304101859	30	2	3,500.00	9,136,457.88	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
08/17/2021	304101859	30	2	3,500.00	9,149,578.09	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
07/16/2021	304101859	30	2	3,500.00	9,162,643.06	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
06/17/2021	304101859	30	2	3,500.00	9,176,899.38	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
05/17/2021	304101859	30	2	3,500.00	9,189,849.32	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
04/16/2021	304101859	30	2	3,500.00	9,203,994.77	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
03/17/2021	304101859	30	2	3,500.00	9,216,830.63	9,413,989.49	8,330,000.00	01/14/2021	01/21/2020
Reports Available at sf.citidirect.com			v. 21.09.28		Page 37 of 44				© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1											June 17, 2026

HISTORICAL SPECIALLY SERVICED LOANS


				Special Servicing		Ending	Ending	Most	Most Recent	Most Recent	Most Recent
Distribution			Workout	Fee Amount		Scheduled	Actual	Recent	Valuation	Special Servicer Master Servicer
Date	Loan ID	OMCR	Strategy (3)	Plus Adjustments		Balance	Balance	Value	Date	Transfer Date	Return Date

02/18/2021	304101859	30	2	3,500.00		9,233,374.53	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
01/15/2021	304101859	30	2	3,500.00		9,246,086.69	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
12/17/2020	304101859	30	2	3,500.00		9,258,745.33	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
11/18/2020	304101859	30	2	3,500.00		9,272,610.03	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
10/19/2020	304101859	30	2	3,500.00		9,285,157.00	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
09/17/2020	304101859	30	2	3,500.00		9,298,914.07	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
08/17/2020	304101859	30	2	3,500.00		9,311,350.29	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
07/17/2020	304101859	30	2	3,500.00		9,323,734.15	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
06/17/2020	304101859	30	2	3,500.00		9,337,334.02	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
05/15/2020	304101859	30	2	3,500.00		9,349,608.49	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
04/17/2020	304101859	30	13	3,500.00		9,363,102.92	9,413,989.49	8,500,000.00	02/29/2020	01/21/2020
03/17/2020	304101859	30	13	3,500.00		9,375,268.89	9,413,989.49	13,900,000.00	02/15/2017	01/21/2020
02/18/2020	304101859	30	13	3,500.00		9,389,934.22	9,439,117.59	13,900,000.00	02/15/2017	01/21/2020
05/17/2021	304101861	4	8	5,441.48		52,142,057.56	52,142,057.56	65,600,000.00	10/29/2020	08/19/2020	04/21/2021
04/16/2021	304101861	4	1	(72,815.41	)	52,238,198.79	52,327,266.50	82,000,000.00	07/06/2017	08/19/2020
03/17/2021	304101861	4	1	10,195.91		52,327,266.50	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
02/18/2021	304101861	4	13	11,307.34		52,436,131.77	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
01/15/2021	304101861	4	13	11,326.27		52,524,413.46	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
12/17/2020	304101861	4	13	10,980.56		52,612,344.58	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
11/18/2020	304101861	4	13	11,365.35		52,706,678.26	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
10/19/2020	304101861	4	13	11,018.23		52,793,885.58	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
09/17/2020	304101861	4	13	6,621.75		52,887,521.50	53,238,204.74	82,000,000.00	07/06/2017	08/19/2020
05/15/2020	307971614	23	8	-		11,908,830.85	11,908,830.85	55,750,000.00	04/07/2017		04/17/2020




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Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1									June 17, 2026

HISTORICAL UNSCHEDULED PRINCIPAL DETAIL


Distribution			Liquidation /	Liquid / Prepay	Principal	Principal	Prepayment Interest	Prepayment	Yield Maintenance
Date	Loan ID	OMCR	Prepayment Date	Code (5)	Collections	Adjustments	Excess / (Shortfall)	Penalties (PPP)	Penalties (YM)

6/17/2026	203041833	29	05/20/2026	9	9,324,143.20	-	-	-	93,391.39
5/15/2026	1647637	27	04/27/2026	9	4,733,715.23	-	-	-	143,196.19
4/17/2026	1647637	27	03/18/2026	1	622,478.45	-	-	-	-
6/17/2025	1647637	27	06/01/2025	1	2,531,769.15	-	-	-	-
4/17/2025	308511028	28	04/11/2025	2	8,807,720.12	-	-	-	-
7/17/2023	300801627	44	06/28/2023	9	4,540,137.60	-	-	-	45,473.64
6/17/2022	307971614	23	06/03/2022	5	11,446,234.79	-	-	-	-
5/17/2022	304101836	6	05/03/2022	2	42,000,000.00	-	-	-	-
9/17/2019	1749084	22	08/01/2018	11	3,156,779.24	-	-	-	254,846.27




Reports Available at sf.citidirect.com		v. 21.09.28			Page 40 of 44			© Copyright 2026 Citigroup


Citigroup Commercial Mortgage Trust 2017-B1
Commercial Mortgage Pass-Through Certificates, Series 2017-B1					June 17, 2026

CREFC® INVESTOR REPORTING PACKAGE LEGENDS

1\|CREFC Investor Reporting Package Legends
	Property Type (1)		Workout Strategy (3)		Liquidation/Prepayment Code (5)

MF	Multifamily	1	Modification	1	Partial Liquidation (Curtailment)
RT	Retail	2	Foreclosure	2	Payoff Prior To Maturity
HC	HealthCare	3	Bankruptcy	3	Disposition / Liquidation
IN	Industrial	4	Extension	4	Repurchase / Substitution
MH	Mobile Home Park	5	Note Sale	5	Full Payoff At Maturity
OF	Office	6	DPO	6	DPO
MU	Mixed Use	7	REO	7	Liquidation prior to 7/1/2006
LO	Lodging	8	Resolved	8	Payoff With Penalty
SS	Self Storage	9	Pending Return to Master Servicer	9	Payoff With Yield Maintenance
SE	Securities	10	Deed In Lieu of Foreclosure	10	Curtailment With Penalty
CH	Cooperative Housing	11	Full Payoff	11	Curtailment With Yield Maintenance
ZZ	Missing Information	12	Reps and Warranties
SF	SF	13	TBD
WH	Warehouse	98	Other
OT	Other

Modification Code (4)

	Payment Status of Loan (2)
		1	Maturity Date Extension
A	In Grace Period	2	Amortization Change
B	Late, but less than 30 Days	3	Principal Write-Off
0	Current	4	Blank (formerly Combination)
1	30-59 Days Delinquent	5	Temporary Rate Reduction
2	60-89 Days Delinquent	6	Capitalization of Interest
3	90-120 Days Delinquent	7	Capitalization of Taxes
4	Performing Matured Balloon	8	Other
5	Non Performing Matured Balloon	9	Combination
6	121+ Days Delinquent	10	Forbearance




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