Is 91 E 21st St rent stabilized?
91 E 21st St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 16 apartments, built in 1916.
Also written as 91 East 21st Street — or 91 E 21st St, Brooklyn, NY 11226.
How this building compares
With about 16 apartments it is smaller than 73% of the 564 rent-stabilized buildings this site tracks in Flatbush. It went up in 1916, 15 years before the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 186 open violations here, about 11.6 per apartment — above the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 982 violations on record at the address, 323 are class C — HPD's immediately hazardous grade, and 40 of them are still open. HPD issued 223 new violations at the address in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1916 |
| Apartments | 16 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3050820091 |
Owner & management
| Owner | 91 E21 BH LLC 9 PARK PLACE #3 FLOO · Great Neck, NY 11021 |
| Managing agent | JONATHAN ISMAILI |
Building conditions
| HPD violations | 186 open / 982 total · 223 in last 12 mo |
| HPD complaints | 1 open / 476 total |
| HPD registration last filed | July 30, 2025 |
Full building report — $9
Frequently asked questions
Is 91 E 21st St rent stabilized?
91 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 91 E 21st St?
91 E 21st St (BBL 3050820091) has about 16 residential apartments and was built in 1916, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.