INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Mortgage Maturities) (Details) - USD ($)	Mar. 31, 2019	Mar. 31, 2018
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Less: unamortized deferred financing costs	$ (1,285,000)
Debt maturities net of unamortized deferred financing costs		$ 123,720,733
Weighted average interest rate (as a percent)	3.87%
Effective interest rate (as a percent)	3.94%
Investment Properties
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
3/31/2019	$ 199,661
3/31/2020	207,527
3/31/2021	215,702
3/31/2022	224,199
3/31/2023	233,032
Thereafter	166,323,670
Total	167,403,791
Less: unamortized deferred financing costs	(932,494)
Debt maturities net of unamortized deferred financing costs	166,471,297
Hamilton Essex 81
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Thereafter	10,000,000
Total	10,000,000
Less: unamortized deferred financing costs	(89,629)
Debt maturities net of unamortized deferred financing costs	9,910,371	9,896,582
345 Franklin
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
3/31/2019	199,661
3/31/2020	207,527
3/31/2021	215,702
3/31/2022	224,199
3/31/2023	233,032
Thereafter	8,423,670
Total	9,503,791
Less: unamortized deferred financing costs	(61,591)
Debt maturities net of unamortized deferred financing costs	9,442,200	9,627,636
Hamilton Minuteman
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Thereafter	6,000,000
Total	6,000,000
Less: unamortized deferred financing costs	(101,953)
Debt maturities net of unamortized deferred financing costs	5,898,047	5,889,863
Hamilton on Main Apts
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Thereafter	16,900,000
Total	16,900,000
Less: unamortized deferred financing costs	(86,944)
Debt maturities net of unamortized deferred financing costs	16,813,056	16,797,004
Dexter Park
INVESTMENT IN UNCONSOLIDATED JOINT VENTURES
Thereafter	125,000,000
Total	125,000,000
Less: unamortized deferred financing costs	(592,377)
Debt maturities net of unamortized deferred financing costs	$ 124,407,623	$ 81,509,648