Note 7 - Mortgage Notes Payable - Mortgage Notes Payable (Details) - USD ($) |
Mar. 31, 2026 |
Dec. 31, 2025 |
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|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Mortgage Notes Payable, net | $ 81,633,567 | $ 92,074,367 | ||||||||||
| Mortgage Notes [Member] | ||||||||||||
| Mortgage Notes Payable | 82,406,895 | 92,921,683 | ||||||||||
| Unamortized loan costs | (773,328) | (847,316) | ||||||||||
| Mortgage Notes [Member] | Dakota Center [Member] | ||||||||||||
| Mortgage Notes Payable | [1] | $ 0 | 8,739,687 | |||||||||
| Interest rate | [1],[2] | 4.74% | ||||||||||
| Mortgage Notes [Member] | Arapahoe Center [Member] | ||||||||||||
| Mortgage Notes Payable | $ 8,634,969 | 8,670,000 | ||||||||||
| Interest rate | [2] | 6.75% | ||||||||||
| Mortgage Notes [Member] | One Park Centre [Member] | ||||||||||||
| Mortgage Notes Payable | $ 6,096,528 | 6,096,528 | ||||||||||
| Interest rate | [2] | 6.83% | ||||||||||
| Mortgage Notes [Member] | Genesis Plaza [Member] | ||||||||||||
| Mortgage Notes Payable | $ 6,220,513 | 6,235,986 | ||||||||||
| Interest rate | [2] | 7.07% | ||||||||||
| Mortgage Notes [Member] | Shea Center II [Member] | ||||||||||||
| Mortgage Notes Payable | [3] | $ 16,353,296 | 16,353,296 | |||||||||
| Interest rate | [2],[4] | 4.92% | ||||||||||
| Mortgage Notes [Member] | West Fargo Industrial [Member] | ||||||||||||
| Mortgage Notes Payable | $ 5,750,000 | 5,750,000 | ||||||||||
| Interest rate | [2] | 7.14% | ||||||||||
| Mortgage Notes [Member] | Grand Pacific Center [Member] | ||||||||||||
| Mortgage Notes Payable | $ 6,329,102 | 6,360,819 | ||||||||||
| Interest rate | [2] | 6.35% | ||||||||||
| Mortgage Notes [Member] | Baltimore [Member] | ||||||||||||
| Mortgage Notes Payable | $ 5,670,000 | 5,670,000 | ||||||||||
| Interest rate | [2] | 4.67% | ||||||||||
| Mortgage Notes [Member] | Mandolin [Member] | ||||||||||||
| Mortgage Notes Payable | $ 3,422,936 | 3,440,873 | ||||||||||
| Interest rate | [2] | 4.35% | ||||||||||
| Mortgage Notes [Member] | Subtotal, Presidio Property Trust, Inc. Properties [Member] | ||||||||||||
| Mortgage Notes Payable | $ 58,477,344 | 67,317,189 | ||||||||||
| Mortgage Notes [Member] | Model Home [Member] | ||||||||||||
| Mortgage Notes Payable | [4] | $ 23,929,551 | $ 25,604,494 | |||||||||
| Mortgage Notes [Member] | Model Home [Member] | Minimum [Member] | ||||||||||||
| Interest rate | [2],[5] | 5.76% | ||||||||||
| Mortgage Notes [Member] | Model Home [Member] | Maximum [Member] | ||||||||||||
| Interest rate | [2],[5] | 8.00% | ||||||||||
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