21 St Marks Place, Brooklyn

Tenants here have called the city about heat/hot water 36 times over the last five years — the dominant complaint on this building's record.

21 St Marks Place is a 3-unit building in Brooklyn, New York City (BBL 3003890062). This building is associated with 21 Saint Marks Group LLC. Brix tracks 0 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 1899, this walk-up apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

Tenants have filed 36 HPD complaints about this building over the last five years, most often about heat/hot water.

What tenants have called the city about here over the last five years:

The most recent complaint on this building was filed January 17, 2024.

The building last changed hands on October 24, 2025 for $2,400,000, according to recorded deeds.

Brix rating: Clean (100/100). View the full report on Brix.

See every NYC building owned by 21 Saint Marks Group LLC on the landlord portfolio page.

Part of Park Slope — see violations, complaints, and landlord activity across the whole neighborhood.

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