Is 31 E 21st St rent stabilized?
31 E 21st St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 49 apartments, built in 1931.
Also written as 31 East 21st Street — or 31 E 21st St, Brooklyn, NY 11226.
How this building compares
With about 49 apartments it is larger than 68% of the 564 rent-stabilized buildings this site tracks in Flatbush. Its 1931 construction date sits close to the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 31 open violations here, about 0.6 per apartment — below the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 444 violations on record at the address, 93 are class C — HPD's immediately hazardous grade. Tenants have filed 788 HPD complaints at the address, 57 of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1931 |
| Apartments | 49 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3050630017 |
Owner & management
| Owner | 21 EAST 21 STREET PARTNERS LLC 21 EAST 21 STREET · Brooklyn, NY 11230 |
| Managing agent | GOLDMONT REALTY CORP |
Building conditions
| HPD violations | 31 open / 444 total · 59 in last 12 mo |
| HPD complaints | 2 open / 788 total |
| HPD registration last filed | July 10, 2025 |