INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details)	Jun. 30, 2025 USD ($) property	Dec. 31, 2024 USD ($)	Jun. 30, 2024 USD ($) property	Dec. 31, 2023 USD ($)	May 31, 2018 USD ($)	Oct. 28, 2009 item	Mar. 07, 2005 item	Mar. 02, 2005 item
ASSETS
Rental Properties	$ 456,339,814	$ 278,516,649
Cash & Cash Equivalents	16,677,504	17,615,940
Rent Receivable	1,295,709	1,220,761
Real Estate Tax Escrow	2,534,266	2,598,073
Prepaid Expenses & Other Assets	13,516,193	8,553,360
Total Assets	494,775,576	393,508,658
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	511,175,005	406,205,910
Accounts Payable & Accrued Expense	9,640,987	9,004,962
Advance Rental Pmts & Security Deposits	12,419,915	10,199,807
Total Liabilities	563,748,914	455,942,560
Partners' Capital	(68,973,338)	(62,433,902)	$ (66,987,763)	$ (65,354,385)
Total Liabilities and Partners' Capital	494,775,576	393,508,658
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	(30,513,007)	$ (30,531,881)
Investment Properties
ASSETS
Rental Properties	98,359,173		101,051,070
Cash & Cash Equivalents	7,789,616		3,878,642
Rent Receivable	467,518		446,111
Real Estate Tax Escrow	144,223		334,200
Prepaid Expenses & Other Assets	3,692,422		4,351,960
Total Assets	110,452,952		110,061,983
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	172,223,009		165,905,350
Accounts Payable & Accrued Expense	1,442,918		1,195,814
Advance Rental Pmts & Security Deposits	5,346,339		5,519,946
Total Liabilities	179,012,266		172,621,110
Partners' Capital	(68,559,314)		(62,559,127)
Total Liabilities and Partners' Capital	110,452,952		110,061,983
Investment in Unconsolidated Joint Ventures	1,408,780		1,413,318
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	(30,513,007)		(27,439,764)
Total Investment in Unconsolidated Joint Ventures (Net)	$ (29,104,227)		$ (26,026,446)
Total units/ condominiums
Total | property	690		690
Investment Properties | Apartments
Total units/ condominiums
Total | property	687		687
Investment Properties | Commercial
Total units/ condominiums
Total | property	3		3
Hamilton Essex 81
ASSETS
Rental Properties	$ 5,065,184		$ 5,246,865
Cash & Cash Equivalents	1,364,311		1,141,309
Rent Receivable	197,025		197,191
Real Estate Tax Escrow	68,876		81,453
Prepaid Expenses & Other Assets	306,479		351,532
Total Assets	7,001,875		7,018,350
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	9,996,553		9,982,764
Accounts Payable & Accrued Expense	282,111		136,741
Advance Rental Pmts & Security Deposits	369,428		374,170
Total Liabilities	10,648,092		10,493,675
Partners' Capital	(3,646,217)		(3,475,325)
Total Liabilities and Partners' Capital	$ 7,001,875		$ 7,018,350
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (1,823,109)		$ (1,737,662)
Total units/ condominiums
Total	49		49				48
Hamilton Essex 81 | Apartments
Total units/ condominiums
Total | property	48		48
Hamilton Essex 81 | Commercial
Total units/ condominiums
Total | property	1		1
Hamilton Essex Development
ASSETS
Rental Properties	$ 2,579,456		$ 2,581,946
Cash & Cash Equivalents	67,004		38,045
Rent Receivable	65,560		75,733
Prepaid Expenses & Other Assets	29,207		41,042
Total Assets	2,741,227		2,736,766
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable & Accrued Expense	6,311		2,000
Total Liabilities	6,311		2,000
Partners' Capital	2,734,916		2,734,766
Total Liabilities and Partners' Capital	$ 2,741,227		$ 2,736,766
Partners' Capital %-NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 1,367,458		$ 1,367,383
Total units/ condominiums
Total | property	1		1
Hamilton Essex Development | Commercial
Total units/ condominiums
Total | property	1		1
345 Franklin
ASSETS
Rental Properties	$ 4,010,711		$ 4,308,810
Cash & Cash Equivalents	65,073		160,348
Rent Receivable	15,696		1,293
Real Estate Tax Escrow	43,268		31,596
Prepaid Expenses & Other Assets	61,802		110,132
Total Assets	4,196,550		4,612,179
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	8,099,455		8,337,358
Accounts Payable & Accrued Expense	64,117		70,945
Advance Rental Pmts & Security Deposits	258,189		307,229
Total Liabilities	8,421,761		8,715,532
Partners' Capital	(4,225,211)		(4,103,353)
Total Liabilities and Partners' Capital	$ 4,196,550		$ 4,612,179
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (2,112,606)		$ (2,051,676)
Total units/ condominiums
Total | property	40		40
345 Franklin | Apartments
Total units/ condominiums
Total | property	40		40
Hamilton 1025
ASSETS
Rental Properties	$ 70,131		$ 73,395
Cash & Cash Equivalents	14,483		17,673
Rent Receivable			3,309
Prepaid Expenses & Other Assets	7		1,038
Total Assets	84,621		95,415
LIABILITIES AND PARTNERS' CAPITAL
Accounts Payable & Accrued Expense	1,977		3,545
Total Liabilities	1,977		3,545
Partners' Capital	82,644		91,870
Total Liabilities and Partners' Capital	$ 84,621		$ 95,415
Partners' Capital %-NERA	50.00%		50.00%
Investment in Unconsolidated Joint Ventures	$ 41,322		$ 45,935
Total units/ condominiums
Total	1		1					176
Units to be retained | item								49
Hamilton 1025 | Apartments
Total units/ condominiums
Total | property			0
Hamilton 1025 | Commercial
Total units/ condominiums
Total | property	1		1
Hamilton Minuteman Apts
ASSETS
Rental Properties	$ 3,847,684		$ 4,054,581
Cash & Cash Equivalents	479,150		123,723
Rent Receivable	3,888		2,211
Real Estate Tax Escrow	32,079		29,661
Prepaid Expenses & Other Assets	54,603		71,628
Total Assets	4,417,404		4,281,804
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	5,949,194		5,941,010
Accounts Payable & Accrued Expense	55,030		68,813
Advance Rental Pmts & Security Deposits	179,124		176,456
Total Liabilities	6,183,348		6,186,279
Partners' Capital	(1,765,944)		(1,904,475)
Total Liabilities and Partners' Capital	$ 4,417,404		$ 4,281,804
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (882,972)		$ (952,238)
Total units/ condominiums
Total | property	42		42
Hamilton Minuteman Apts | Apartments
Total units/ condominiums
Total | property	42		42
Hamilton on Main Apts
ASSETS
Rental Properties	$ 13,180,990		$ 12,884,525
Cash & Cash Equivalents	588,855		795,809
Rent Receivable	36,070		19,042
Real Estate Tax Escrow			191,490
Prepaid Expenses & Other Assets	299,310		363,109
Total Assets	14,105,225		14,253,975
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	23,366,292		16,897,325
Accounts Payable & Accrued Expense	240,187		190,892
Advance Rental Pmts & Security Deposits	483,952		537,218
Total Liabilities	24,090,431		17,625,435
Partners' Capital	(9,985,206)		(3,371,460)
Total Liabilities and Partners' Capital	$ 14,105,225		$ 14,253,975
Partners' Capital %-NERA	50.00%		50.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (4,992,603)		$ (1,685,730)
Total units/ condominiums
Total | property	148		148
Hamilton on Main Apts | Apartments
Total units/ condominiums
Total | property	148		148
Dexter Park
ASSETS
Rental Properties	$ 69,605,017		$ 71,900,948
Cash & Cash Equivalents	5,210,740		1,601,735
Rent Receivable	149,279		147,332
Prepaid Expenses & Other Assets	2,941,014		3,413,479
Total Assets	77,906,050		77,063,494
LIABILITIES AND PARTNERS' CAPITAL
Mortgage Notes Payable	124,811,515		124,746,893		$ 82,000,000
Accounts Payable & Accrued Expense	793,185		722,878
Advance Rental Pmts & Security Deposits	4,055,646		4,124,873
Total Liabilities	129,660,346		129,594,644
Partners' Capital	(51,754,296)		(52,531,150)
Total Liabilities and Partners' Capital	$ 77,906,050		$ 77,063,494
Partners' Capital %-NERA	40.00%		40.00%
Distribution and Loss in Excess of investments in Unconsolidated Joint Ventures	$ (20,701,718)		$ (21,012,460)
Total units/ condominiums
Total	409		409			409
Dexter Park | Apartments
Total units/ condominiums
Total | property	409		409