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 578 violations on record at the address, 131 are class C — HPD's immediately hazardous grade. Tenants have filed 1,838 HPD complaints at the address, 44 of them 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 / 578 total · 66 in last 12 mo |
| HPD complaints | 0 open / 1838 total |
| HPD registration last filed | August 20, 2025 |