Note 7 - Mortgage Notes Payable - Mortgage Notes Payable (Details) - USD ($) |
Jun. 30, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mortgage Notes Payable, net | $ 80,141,930 | $ 92,074,367 | ||||||||||||
| Mortgage Notes [Member] | ||||||||||||||
| Mortgage Notes Payable | 80,858,050 | 92,921,683 | ||||||||||||
| Unamortized loan costs | (716,120) | (847,316) | ||||||||||||
| Mortgage Notes [Member] | Dakota Center [Member] | ||||||||||||||
| Mortgage Notes Payable | [1],[2] | $ 0 | 8,739,687 | |||||||||||
| Interest rate | [2],[3],[4] | 4.74% | ||||||||||||
| Mortgage Notes [Member] | Arapahoe Center [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 8,602,574 | 8,670,000 | ||||||||||||
| Interest rate | [3] | 6.75% | ||||||||||||
| Mortgage Notes [Member] | One Park Centre [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 6,074,378 | 6,096,528 | ||||||||||||
| Interest rate | [3] | 6.83% | ||||||||||||
| Mortgage Notes [Member] | Genesis Plaza [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 6,207,197 | 6,235,986 | ||||||||||||
| Interest rate | [3] | 7.07% | ||||||||||||
| Mortgage Notes [Member] | Shea Center II [Member] | ||||||||||||||
| Mortgage Notes Payable | [5] | $ 16,353,296 | 16,353,296 | |||||||||||
| Interest rate | [3],[6] | 4.92% | ||||||||||||
| Mortgage Notes [Member] | West Fargo Industrial [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 5,750,000 | 5,750,000 | ||||||||||||
| Interest rate | [3] | 7.14% | ||||||||||||
| Mortgage Notes [Member] | Grand Pacific Center [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 6,299,068 | 6,360,819 | ||||||||||||
| Interest rate | [3] | 6.35% | ||||||||||||
| Mortgage Notes [Member] | Baltimore [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 5,670,000 | 5,670,000 | ||||||||||||
| Interest rate | [3] | 4.67% | ||||||||||||
| Mortgage Notes [Member] | Mandolin [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 3,405,624 | 3,440,873 | ||||||||||||
| Interest rate | [3] | 4.35% | ||||||||||||
| Mortgage Notes [Member] | Subtotal, Presidio Property Trust, Inc. Properties [Member] | ||||||||||||||
| Mortgage Notes Payable | $ 58,362,137 | 67,317,189 | ||||||||||||
| Mortgage Notes [Member] | Model Home [Member] | ||||||||||||||
| Mortgage Notes Payable | [6] | $ 22,495,913 | $ 25,604,494 | |||||||||||
| Mortgage Notes [Member] | Model Home [Member] | Minimum [Member] | ||||||||||||||
| Interest rate | [3] | 5.76% | ||||||||||||
| Mortgage Notes [Member] | Model Home [Member] | Maximum [Member] | ||||||||||||||
| Interest rate | [3] | 8.00% | ||||||||||||
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