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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Mortgage Maturities) (Details) - USD ($) | Mar. 31, 2022 | Dec. 31, 2021 | Mar. 31, 2021 | May 31, 2018 | Oct. 13, 2016
--- | --- | --- | --- | --- | ---
Annual maturities of mortgage debt |  |  |  |  |
2023-current maturities | $ 8,719,000 |  |  |  |
2024 | 31,306,000 |  |  |  |
2025 | 11,094,000 |  |  |  |
2026 | 21,904,000 |  |  |  |
2027 | 6,507,000 |  |  |  |
Thereafter | 293,060,000 |  |  |  |
Total | 372,590,000 |  |  |  |
Less: unamortized deferred financing costs | (2,619,000) |  |  |  |
Secured Debt | $ 369,970,778 | $ 370,481,390 |  |  |
Weighted average interest rate (as a percent) | 3.91% |  |  |  |
Effective interest rate (as a percent) | 3.97% |  |  |  |
Investment Properties |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
2023-current maturities | $ 224,199 |  |  |  |
2024 | 233,032 |  |  |  |
2025 | 17,142,212 |  |  |  |
2026 | 10,251,753 |  |  |  |
2027 | 261,671 |  |  |  |
Thereafter | 138,668,034 |  |  |  |
Total | 166,780,901 |  |  |  |
Less: unamortized deferred financing costs | (604,578) |  |  |  |
Secured Debt | 166,176,323 |  | $ 166,282,719 |  |
Hamilton Essex 81 |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
2026 | 10,000,000 |  |  |  |
Total | 10,000,000 |  |  |  |
Less: unamortized deferred financing costs | (48,262) |  |  |  |
Secured Debt | 9,951,738 |  | 9,937,949 |  |
345 Franklin |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
2023-current maturities | 224,199 |  |  |  |
2024 | 233,032 |  |  |  |
2025 | 242,212 |  |  |  |
2026 | 251,753 |  |  |  |
2027 | 261,671 |  |  |  |
Thereafter | 7,668,034 |  |  |  |
Total | 8,880,901 |  |  |  |
Less: unamortized deferred financing costs | (41,615) |  |  |  |
Secured Debt | 8,839,286 |  | 9,048,329 |  |
Hamilton Minuteman |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
Thereafter | 6,000,000 |  |  |  |
Total | 6,000,000 |  |  |  |
Less: unamortized deferred financing costs | (77,402) |  |  |  | $ (123,000)
Secured Debt | 5,922,598 |  | 5,914,414 |  |
Hamilton on Main Apts |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
2025 | 16,900,000 |  |  |  |
Total | 16,900,000 |  |  |  |
Less: unamortized deferred financing costs | (38,791) |  |  |  |
Secured Debt | 16,861,209 |  | 16,845,158 |  |
Dexter Park |  |  |  |  |
Annual maturities of mortgage debt |  |  |  |  |
Thereafter | 125,000,000 |  |  |  |
Total | 125,000,000 |  |  |  |
Less: unamortized deferred financing costs | (398,508) |  |  |  |
Secured Debt | $ 124,601,492 |  | $ 124,536,869 | $ 82,000,000 |

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