Is 50 E 21st St rent stabilized?
50 E 21st St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 59 apartments, built in 1936.
Also written as 50 East 21st Street — or 50 E 21st St, Brooklyn, NY 11226.
How this building compares
With about 59 apartments it is larger than 77% of the 564 rent-stabilized buildings this site tracks in Flatbush. Its 1936 construction date sits close to the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 60 open violations here, about 1.0 per apartment — close to the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 583 violations on record at the address, 133 are class C — HPD's immediately hazardous grade, and 22 of them are still open. HPD issued 68 new violations at the address in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1936 |
| Apartments | 59 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3050620051 |
Owner & management
| Owner | Prospect 21, LLC 108-18 Queens Blvd #302 · Forest Hills, NY 11375 |
| Managing agent | Bronstein Properties LLC |
Building conditions
| HPD violations | 60 open / 583 total · 68 in last 12 mo |
| HPD complaints | 0 open / 1844 total |
| HPD registration last filed | August 20, 2025 |
Full building report — $9
Frequently asked questions
Is 50 E 21st St rent stabilized?
50 E 21st St in Flatbush, Brooklyn is registered as rent stabilized in the New York State DHCR 2024 rent-stabilized building files, where its stabilization code is MULTIPLE DWELLING A. Registration is recorded for the building, not for each apartment in it, so an individual unit here can still have been deregulated — ask the landlord or DHCR for that apartment's rent history before relying on it.
How many apartments are at 50 E 21st St?
50 E 21st St (BBL 3050620051) has about 59 residential apartments and was built in 1936, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.