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v3.22.1

RENTAL PROPERTIES | 3 Months Ended
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Mar. 31, 2022
RENTAL PROPERTIES |
RENTAL PROPERTIES | NOTE 2. RENTAL PROPERTIES ​ As of March 31, 2022, the Partnership and its Subsidiary Partnerships owned 2,892 residential apartment units in 25 residential and mixed-use complexes (collectively, the “Apartment Complexes”). The Partnership also owns 19 condominium units in a residential condominium complex, all of which are leased to residential tenants (collectively referred to as the “Condominium Units”). The Apartment Complexes and Condominium Units are located primarily in the metropolitan Boston area of Massachusetts. ​ Additionally, as of March 31, 2022, the Partnership and Subsidiary Partnerships owned a commercial shopping center in Framingham, commercial buildings in Newton and Brookline and mixed-use properties in Boston, Brockton and Newton, all in Massachusetts. These properties are referred to collectively as the “Commercial Properties.” ​ The Partnership also owned a 40% to 50% ownership interest in seven residential and mixed use complexes (the “Investment Properties”) at March 31, 2022 with a total of 688 apartment units, accounted for using the equity method of consolidation. See Note 14 for summary information on these investments. Rental properties consist of the following: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | March 31, 2022 |  | December 31, 2021 |  | Useful Life |
Land, improvements and parking lots | ​ | $ | 86,887,276 | ​ | $ | 86,887,276 | ​ | 15 | - | 40 | years | ​
Buildings and improvements | ​ |  | 254,297,847 | ​ |  | 253,952,680 | ​ | 15 | - | 40 | years | ​
Kitchen cabinets | ​ |  | 17,061,510 | ​ |  | 16,946,916 | ​ | 5 | - | 10 | years | ​
Carpets | ​ |  | 12,189,143 | ​ |  | 12,029,577 | ​ | 5 | - | 10 | years | ​
Air conditioning | ​ |  | 501,697 | ​ |  | 501,697 | ​ | 5 | - | 10 | years | ​
Laundry equipment | ​ |  | 608,271 | ​ |  | 608,271 | ​ | 5 | - | 7 | years | ​
Elevators | ​ |  | 1,885,265 | ​ |  | 1,885,265 | ​ | 20 | - | 40 | years | ​
Swimming pools | ​ |  | 1,090,604 | ​ |  | 1,090,604 | ​ | 10 | - | 30 | years | ​
Equipment | ​ |  | 18,297,897 | ​ |  | 18,072,761 | ​ | 5 | - | 30 | years | ​
Motor vehicles | ​ |  | 171,519 | ​ |  | 171,519 | ​ | ​ | ​ | 5 | years | ​
Fences | ​ |  | 46,872 | ​ |  | 46,872 | ​ | 5 | - | 15 | years | ​
Furniture and fixtures | ​ |  | 8,099,011 | ​ |  | 7,898,163 | ​ | 5 | - | 7 | years | ​
Smoke alarms | ​ |  | 496,641 | ​ |  | 496,641 | ​ | 5 | - | 7 | years | ​
Total fixed assets | ​ |  | 401,633,553 | ​ |  | 400,588,242 | ​ | ​ | ​ | ​ | ​ | ​
Less: Accumulated depreciation | ​ |  | (153,226,003) | ​ |  | (149,233,040) | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | $ | 248,407,550 | ​ | $ | 251,355,202 | ​ | ​ | ​ | ​ | ​ | ​
​

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- Definition This element represents the entire disclosure of lessor's property under leasing agreements and property available for lease (not currently under lease) by property class, the gross amount, accumulated depreciation and net amount as of the balance sheet date. + References No definition available. + Details
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Namespace Prefix: | nen_
Data Type: | dtr-types:textBlockItemType
Balance Type: | na
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- References No definition available. + Details
Name: | nen_RentalPropertiesDisclosureAbstract
Namespace Prefix: | nen_
Data Type: | xbrli:stringItemType
Balance Type: | na
Period Type: | duration