v3.26.1
Cover
 12 Months Ended
Mar. 31, 2026
shares
Document Information [Line Items]  
Document Type 20-F/A
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Document Shell Company Report false
Entity Interactive Data Current Yes
Document Accounting Standard U.S. GAAP
Amendment Flag true
Document Period End Date Mar. 31, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus FY
ICFR Auditor Attestation Flag false
Entity Registrant Name Skyline Builders Group Holding Limited
Entity Central Index Key 0002031009
Current Fiscal Year End Date --03-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Filer Category Non-accelerated Filer
Entity File Number 001-42461
Entity Shell Company false
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Incorporation, State or Country Code E9
Entity Address, Address Line One Office A, 15/F, Tower A
Entity Address, Address Line Two Capital Tower
Entity Address, Address Line Three No. 38 Wai Yip Street
Entity Address, City or Town Kowloon Bay
Entity Address, Country HK
Entity Address, Postal Zip Code 000000
Title of 12(b) Security Class A Ordinary Shares, par value US$0.00001 per share
No Trading Symbol Flag true
Security Exchange Name NASDAQ
Amendment Description This Amendment No. 1 to Form 20-F (the “Form 20-F/A”) amends our annual report on Form 20-F for the year ended March 31, 2026, which was originally filed with the Securities and Exchange Commission on August 17, 2026 (the “Annual Report”). The purpose of this Form 20-F/A is (i) to correct certain clerical data entry errors that inadvertently occurred on editing in the initial submission, and (ii) to file the iXBRL (Inline eXtensible Business Reporting Language) data files that were omitted from the initial submission.This Form 20-F/A does not reflect events occurring after the filing of the Annual Report and does not modify or update the disclosure therein in any way except as described above or herein. No other changes have been made to the Annual Report. The filing of this Form 20-F/A should not be understood to mean that any statements contained in the Annual Report, as amended by this Form 20-F/A, are true or complete as of any date subsequent to the original filing date of the Annual Report. Accordingly, this Form 20-F/A should be read in conjunction with the Annual Report.
Class A Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 15,486,491
Class B Ordinary Shares  
Document Information [Line Items]  
Entity Common Stock, Shares Outstanding 1,995,000
Business Contact  
Document Information [Line Items]  
Contact Personnel Name Ngo Chiu Lam
Contact Personnel Email Address kin-chiu88@kinchiu.com.hk
Entity Address, Address Line One Office A, 15/F, Tower A
Entity Address, Address Line Two Capital Tower
Entity Address, Address Line Three No. 38 Wai Yip Street
Entity Address, City or Town Kowloon Bay
Entity Address, Country HK
Entity Address, Postal Zip Code 000000
City Area Code +852
Local Phone Number 2811-9688