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INVESTMENT IN UNCONSOLIDATED JOINT VENTURES (Balance Sheet) (Details) | Dec. 31, 2022 USD ($) property | Dec. 31, 2021 USD ($) property | Dec. 31, 2020 USD ($) property | Dec. 31, 2019 USD ($) | May 31, 2018 USD ($) | Oct. 28, 2009 item | Mar. 07, 2005 item | Mar. 02, 2005 item | Sep. 30, 2004 item | Aug. 31, 2004 item
--- | --- | --- | --- | --- | --- | --- | --- | --- | --- | ---
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 241,076,431 | $ 251,355,202 |  |  |  |  |  |  |  |
Cash and Cash Equivalents | 49,560,723 | 96,083,508 |  |  |  |  |  |  |  |
Rents Receivable | 655,814 | 935,303 |  |  |  |  |  |  |  |
Real Estate Tax Escrows | 1,943,680 | 861,697 |  |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 8,814,112 | 6,183,981 |  |  |  |  |  |  |  |
Total Assets | 391,820,280 | 356,875,579 |  |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 410,966,199 | 370,481,390 |  |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 7,271,729 | 4,324,879 |  |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 9,032,580 | 8,369,497 |  |  |  |  |  |  |  |
Total Liabilities | 451,689,637 | 406,168,186 |  |  |  |  |  |  |  |
Partners' Capital | (59,869,357) | (49,292,607) | $ (41,469,045) | $ (37,823,788) |  |  |  |  |  |
Total Liabilities and Partners' Capital | 391,820,280 | 356,875,579 |  |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | (24,419,129) | (22,992,420) |  |  |  |  |  |  |  |
Investment Properties |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | 107,135,557 | 111,783,510 | 115,699,932 |  |  |  |  |  |  |
Cash and Cash Equivalents | 7,055,942 | 3,391,632 | 3,582,550 |  |  |  |  |  |  |
Rents Receivable | 403,902 | 537,327 | 653,051 |  |  |  |  |  |  |
Real Estate Tax Escrows | 267,947 | 252,689 | 233,125 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 2,988,297 | 2,789,752 | 2,094,682 |  |  |  |  |  |  |
Total Assets | 117,851,645 | 118,754,910 | 122,263,340 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 166,090,968 | 166,203,707 | 166,308,029 |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 3,047,643 | 1,033,689 | 1,045,804 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 4,165,573 | 3,525,469 | 3,214,958 |  |  |  |  |  |  |
Total Liabilities | 173,304,184 | 170,762,865 | 170,568,791 |  |  |  |  |  |  |
Partners' Capital | (55,452,539) | (52,007,955) | (48,305,451) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | 117,851,645 | 118,754,910 | 122,263,340 |  |  |  |  |  |  |
Investment in Unconsolidated Joint Ventures | 1,437,387 | 1,455,888 | 1,410,770 |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | (24,419,129) | (22,992,420) | (21,339,743) |  |  |  |  |  |  |
Total Investment in Unconsolidated Joint Ventures (Net) | $ (22,981,742) | $ (21,536,532) | $ (19,928,974) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 690 | 690 | 865 |  |  |  |  |  |  |
Units to be retained | property | 690 | 690 | 690 |  |  |  |  |  |  |
Total number of units sold | property | 175 | 175 |  |  |  |  |  |  |  |
Investment Properties | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 687 | 687 | 862 |  |  |  |  |  |  |
Investment Properties | Commercial |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 3 | 3 | 3 |  |  |  |  |  |  |
Hamilton Essex 81 |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 5,829,640 | $ 6,263,331 | $ 6,649,177 |  |  |  |  |  |  |
Cash and Cash Equivalents | 985,849 | 333,699 | 252,878 |  |  |  |  |  |  |
Rents Receivable | 202,221 | 232,521 | 28,181 |  |  |  |  |  |  |
Real Estate Tax Escrows | 74,423 | 76,651 | 71,203 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 321,912 | 301,043 | 281,503 |  |  |  |  |  |  |
Total Assets | 7,414,045 | 7,207,245 | 7,282,942 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 9,962,080 | 9,948,291 | 9,934,502 |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 165,576 | 68,265 | 68,741 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 310,443 | 180,497 | 208,851 |  |  |  |  |  |  |
Total Liabilities | 10,438,099 | 10,197,053 | 10,212,094 |  |  |  |  |  |  |
Partners' Capital | (3,024,054) | (2,989,808) | (2,929,152) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 7,414,045 | $ 7,207,245 | $ 7,282,942 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | $ (1,512,027) | $ (1,494,905) | $ (1,464,576) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | 49 | 49 | 49 |  |  |  | 48 |  |  |
Units to be retained | property | 49 | 49 | 49 |  |  |  |  |  |  |
Hamilton Essex 81 | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 48 | 48 | 48 |  |  |  |  |  |  |
Hamilton Essex 81 | Commercial |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 1 | 1 | 1 |  |  |  |  |  |  |
Hamilton Essex Development |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 2,585,680 | $ 2,588,169 | $ 2,590,659 |  |  |  |  |  |  |
Cash and Cash Equivalents | 110,907 | 98,674 | 55,322 |  |  |  |  |  |  |
Rents Receivable | 78,436 | 68,828 |  |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 53,316 | 62,399 | 80,008 |  |  |  |  |  |  |
Total Assets | 2,828,339 | 2,818,070 | 2,725,989 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 43,000 | 3,000 | 3,200 |  |  |  |  |  |  |
Total Liabilities | 43,000 | 3,000 | 3,200 |  |  |  |  |  |  |
Partners' Capital | 2,785,339 | 2,815,070 | 2,722,789 |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 2,828,339 | $ 2,818,070 | $ 2,725,989 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Investment in Unconsolidated Joint Ventures | $ 1,392,669 | $ 1,407,535 | $ 1,361,395 |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 1 | 1 | 1 |  |  |  |  |  |  |
Units to be retained | property | 1 | 1 | 1 |  |  |  |  |  |  |
Hamilton Essex Development | Commercial |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 1 | 1 | 1 |  |  |  |  |  |  |
345 Franklin |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 4,810,934 | $ 5,062,602 | $ 5,373,751 |  |  |  |  |  |  |
Cash and Cash Equivalents | 358,016 | 155,627 | 156,073 |  |  |  |  |  |  |
Rents Receivable |  | 9,905 | 37,127 |  |  |  |  |  |  |
Real Estate Tax Escrows | 27,771 | 29,999 | 19,874 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 111,018 | 117,197 | 89,636 |  |  |  |  |  |  |
Total Assets | 5,307,739 | 5,375,330 | 5,676,461 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 8,676,945 | 8,892,331 | 9,099,301 |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 84,025 | 52,392 | 87,731 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 269,326 | 228,803 | 227,908 |  |  |  |  |  |  |
Total Liabilities | 9,030,296 | 9,173,526 | 9,414,940 |  |  |  |  |  |  |
Partners' Capital | (3,722,557) | (3,798,196) | (3,738,479) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 5,307,739 | $ 5,375,330 | $ 5,676,461 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | $ (1,861,278) | $ (1,899,098) | $ (1,869,240) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 40 | 40 | 40 |  |  |  |  |  |  |
Units to be retained | property | 40 | 40 | 40 |  |  |  |  |  |  |
345 Franklin | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 40 | 40 | 40 |  |  |  |  |  |  |
Hamilton 1025 |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 78,291 | $ 81,555 | $ 84,819 |  |  |  |  |  |  |
Cash and Cash Equivalents | 29,065 | 11,845 | 13,443 |  |  |  |  |  |  |
Rents Receivable | 4,915 | 6,111 | 3,005 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 493 | 446 | 407 |  |  |  |  |  |  |
Total Assets | 112,764 | 99,957 | 101,674 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 23,329 | 3,251 | 2,924 |  |  |  |  |  |  |
Total Liabilities | 23,329 | 3,251 | 2,924 |  |  |  |  |  |  |
Partners' Capital | 89,435 | 96,706 | 98,750 |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 112,764 | $ 99,957 | $ 101,674 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Investment in Unconsolidated Joint Ventures | $ 44,718 | $ 48,353 | $ 49,375 |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | 1 | 176 | 176 |  |  |  |  | 176 |  |
Units to be retained | 1 | 1 | 1 |  |  |  |  | (49) |  |
Total number of units sold | property | 175 | 175 |  |  |  |  |  |  |  |
Hamilton 1025 | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property |  | 0 | 175 |  |  |  |  |  |  |
Hamilton 1025 | Commercial |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 1 | 1 | 1 |  |  |  |  |  |  |
Hamilton Minuteman |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 4,467,772 | $ 4,697,616 | $ 4,998,436 |  |  |  |  |  |  |
Cash and Cash Equivalents | 328,742 | 156,058 | 159,599 |  |  |  |  |  |  |
Rents Receivable | 2,600 | 6,999 | 3,816 |  |  |  |  |  |  |
Real Estate Tax Escrows | 34,842 | 36,451 | 35,849 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 26,238 | 24,009 | 23,198 |  |  |  |  |  |  |
Total Assets | 4,860,194 | 4,921,133 | 5,220,898 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 5,928,736 | 5,920,552 | 5,912,368 |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 162,623 | 48,145 | 50,514 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 171,680 | 159,324 | 137,792 |  |  |  |  |  |  |
Total Liabilities | 6,263,039 | 6,128,021 | 6,100,674 |  |  |  |  |  |  |
Partners' Capital | (1,402,845) | (1,206,888) | (879,776) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 4,860,194 | $ 4,921,133 | $ 5,220,898 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | $ (701,422) | $ (603,445) | $ (439,888) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | 42 | 42 | 42 |  |  |  |  |  | 42 |
Units to be retained | property | 42 | 42 | 42 |  |  |  |  |  |  |
Hamilton Minuteman | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 42 | 42 | 42 |  |  |  |  |  |  |
Hamilton on Main Apts |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 13,456,133 | $ 14,334,539 | $ 15,239,672 |  |  |  |  |  |  |
Cash and Cash Equivalents | 1,377,250 | 565,171 | 520,150 |  |  |  |  |  |  |
Rents Receivable | 9,565 | 37,750 | 65,511 |  |  |  |  |  |  |
Real Estate Tax Escrows | 130,911 | 109,588 | 106,199 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 186,990 | 181,941 | 148,796 |  |  |  |  |  |  |
Total Assets | 15,160,849 | 15,228,989 | 16,080,328 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 16,873,248 | 16,857,197 | 16,841,145 |  |  |  |  |  |  |
Accounts Payable and Accrued Expenses | 556,239 | 188,012 | 156,923 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 463,963 | 434,126 | 424,314 |  |  |  |  |  |  |
Total Liabilities | 17,893,450 | 17,479,335 | 17,422,382 |  |  |  |  |  |  |
Partners' Capital | (2,732,601) | (2,250,346) | (1,342,054) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 15,160,849 | $ 15,228,989 | $ 16,080,328 |  |  |  |  |  |  |
Partners' Capital %-NERA | 50.00% | 50.00% | 50.00% |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | $ (1,366,300) | $ (1,125,174) | $ (671,027) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | 148 | 148 | 148 |  |  |  |  |  |  | 280
Units to be retained | property | 148 | 148 | 148 |  |  |  |  |  |  |
Hamilton on Main Apts | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 148 | 148 | 148 |  |  |  |  |  |  |
Dexter Park |  |  |  |  |  |  |  |  |  |
ASSETS |  |  |  |  |  |  |  |  |  |
Rental Properties | $ 75,907,107 | $ 78,755,698 | $ 80,763,418 |  |  |  |  |  |  |
Cash and Cash Equivalents | 3,866,113 | 2,070,558 | 2,425,085 |  |  |  |  |  |  |
Rents Receivable | 106,165 | 175,213 | 515,411 |  |  |  |  |  |  |
Prepaid Expenses and Other Assets | 2,288,330 | 2,102,717 | 1,471,134 |  |  |  |  |  |  |
Total Assets | 82,167,715 | 83,104,186 | 85,175,048 |  |  |  |  |  |  |
LIABILITIES AND PARTNERS' CAPITAL |  |  |  |  |  |  |  |  |  |
Mortgage Notes Payable | 124,649,959 | 124,585,336 | 124,520,713 |  | $ 82,000,000 |  |  |  |  |
Accounts Payable and Accrued Expenses | 2,012,851 | 670,624 | 675,771 |  |  |  |  |  |  |
Advance Rental Payments and Security Deposits | 2,950,161 | 2,522,719 | 2,216,093 |  |  |  |  |  |  |
Total Liabilities | 129,612,971 | 127,778,679 | 127,412,577 |  |  |  |  |  |  |
Partners' Capital | (47,445,256) | (44,674,493) | (42,237,529) |  |  |  |  |  |  |
Total Liabilities and Partners' Capital | $ 82,167,715 | $ 83,104,186 | $ 85,175,048 |  |  |  |  |  |  |
Partners' Capital %-NERA | 40.00% | 40.00% | 40.00% |  |  |  |  |  |  |
Distribution and Loss in Excess of investments in Unconsolidated Joint Venture | $ (18,978,102) | $ (17,869,798) | $ (16,895,012) |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | 409 | 409 | 409 |  |  | 409 |  |  |  |
Units to be retained | property | 409 | 409 | 409 |  |  |  |  |  |  |
Dexter Park | Residential buildings |  |  |  |  |  |  |  |  |  |
Total units/ condominiums |  |  |  |  |  |  |  |  |  |
Total | property | 409 | 409 | 409 |  |  |  |  |  |  |

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