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 150 open violations here, about 9.4 per apartment — above the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 935 violations on record at the address, 318 are class C — HPD's immediately hazardous grade. Tenants have filed 461 HPD complaints at the address, 75 of them 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 | 150 open / 935 total · 176 in last 12 mo |
| HPD complaints | 6 open / 461 total |
| HPD registration last filed | July 30, 2025 |