SL Property Group pays $3.5M for 10-unit walkup in Upper West Side

SL Property Group through the entity 520 Wea II LLC paid $3.5 million to Robert Perelmuter through the entity 520 Townhouse, LLC for the 10-unit residential walkup building (C5) at 520 West End Avenue in Upper West Side, Manhattan. The expected use is cash flowing.
The deal closed on November 24, 2025 and was recorded on November 26, 2025. The property has 8,287 square feet of built space and 18,883 square feet of additional air rights for a total buildable of 27,170 square feet according to a PincusCo analysis of city data. The sale price per built square foot is $422 and the price per buildable square foot is $128 per the PincusCo analysis. (The price per square foot analysis is the transaction price divided by square feet as reported in public records and assumes no air rights have been sold.)
The signatory for Robert Perelmuter was Robert Perelmuter. The signatory for SL Property Group was Sean Lefkovits . The contract date was September 9, 2025.

Prior sales and revenue

Prior to this transaction, PincusCo has no record that the buyer SL Property Group had purchased any other properties and has no record it sold any properties over the past 24 months.
The seller Robert Perelmuter had not purchased any other properties and had not sold any properties over the same time period. The former owners according to the Department of Housing Preservation and Development includes Edmond Cohan, head officer and Magadalena Kosz, officer. The business entity is 520 Townhouse, Llc.

The property

The residential walkup building with 10 residential units in Upper West Side has 8,287 square feet of built space and 18,883 square feet of additional air rights for a total buildable of 27,170 square feet according to a PincusCo analysis of city data. The parcel has frontage of 27 feet and is 100 feet deep with a total lot size of 2,717 square feet. The zoning is R10A which allows for up to 10 times floor area ratio (FAR) for residential with inclusionary housing. The property is in the Riverside-West End Historic District Extension I. The city-designated market value for the property in 2022 is $3.8 million.

Violations and lawsuits

There were no lawsuits or bankruptcies filed against the property for the past 24 months. In addition, according to city public data, the property has received $1,250 in ECB penalties and $1,450 in OATH penalties in the last year.

Development

There are no active new building construction projects or major alteration projects with initial costs more than $1 million on this tax lot.

The block

On this tax block, PincusCo has identified the owners of seven of the 10 commercial properties representing 184,821 square feet of the 556,517 square feet. The largest owner is Argo Real Estate, followed by American Musical And Dramatic Academy and then Lynne Dintrone.
There are no active new building construction projects on this tax block.

The majority, or 63 percent of the 556,517 square feet of built space are elevator buildings, with hotel buildings next occupying 26 percent of the space.

Direct link to Acris document. link