Is 401 E 23rd St rent stabilized?
401 E 23rd St is a registered NYC rent-stabilized building in Flatbush, Brooklyn (11226). It has about 23 apartments, built in 1925.
Also written as 401 East 23rd Street — or 401 E 23rd St, Brooklyn, NY 11226.
How this building compares
With about 23 apartments it is smaller than 62% of the 564 rent-stabilized buildings this site tracks in Flatbush. Its 1925 construction date sits close to the 1931 median for stabilized buildings tracked in the neighborhood. HPD lists 29 open violations here, about 1.3 per apartment — above the 0.9 per apartment median for tracked buildings in the neighborhood. Of the 387 violations on record at the address, 97 are class C — HPD's immediately hazardous grade, and 9 of them are still open. HPD issued 40 new violations at the address in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Flatbush |
| ZIP | 11226 |
| Year built | 1925 |
| Apartments | 23 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3052090040 |
Owner & management
| Owner | SYS REALTY LLC 3810 14TH AVE · BROOKLYN, NY 11218 |
| Managing agent | SAM KLEIN |
Building conditions
| HPD violations | 29 open / 387 total · 40 in last 12 mo |
| HPD complaints | 11 open / 1336 total |
| HPD registration last filed | August 25, 2025 |
Full building report — $9
Frequently asked questions
Is 401 E 23rd St rent stabilized?
401 E 23rd 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 401 E 23rd St?
401 E 23rd St (BBL 3052090040) has about 23 residential apartments and was built in 1925, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.