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 31 open violations here, about one for every 3 apartments — below the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 715 violations on record at the address, 230 are class C — HPD's immediately hazardous grade, and 7 of them are still open. HPD issued 162 new violations at the address 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 | 31 open / 715 total · 162 in last 12 mo |
| HPD complaints | 1 open / 805 total |
| HPD registration last filed | July 2, 2025 |
Full building report — $9
Frequently asked questions
Is 100 E 21st St rent stabilized?
100 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 100 E 21st St?
100 E 21st St (BBL 3050810015) has about 84 residential apartments and was built in 1941, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.