Is 100 E 21st St rent stabilized?
100 E 21st St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 84 apartments, built in 1941.
Also written as 100 East 21st Street — or 100 E 21st St, Brooklyn, NY 11226.
How this building compares
With about 84 apartments it is larger than 91% of the 564 rent-stabilized buildings this site tracks in Flatbush. Its 1941 construction date sits close to the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 27 open violations here, about one for every 3 apartments — below the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 708 violations on record at the address, 228 are class C — HPD's immediately hazardous grade. Tenants have filed 797 HPD complaints at the address, 117 of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1941 |
| Apartments | 84 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3050810015 |
Owner & management
| Owner | 100 EAST 21 LLC 1355 GRAND CONCOURSE #BA · Bronx, NY 10452 |
| Managing agent | MARK NEIMAN |
Building conditions
| HPD violations | 27 open / 708 total · 179 in last 12 mo |
| HPD complaints | 3 open / 797 total |
| HPD registration last filed | July 2, 2025 |