Is 639 Union St rent stabilized?
639 Union St is a registered NYC rent-stabilized building in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, Brooklyn (11215). It has about 8 apartments, built in 1931.
Also written as 639 Union Street — or 639 Union St, Brooklyn, NY 11215.
How this building compares
With about 8 apartments it sits near the middle of the 392 rent-stabilized buildings this site tracks in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, where the median building has 8. Its 1931 construction date sits close to the 1920 median for stabilized buildings tracked in the neighborhood. HPD lists 75 open violations here, about 9.4 per apartment — above the one for every 4 apartments median for tracked buildings in the neighborhood. Of the 211 violations on record at the address, 37 are class C — HPD's immediately hazardous grade. Tenants have filed 345 HPD complaints at the address, 14 of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Carroll Gardens-Cobble Hill-Gowanus-Red Hook |
| ZIP | 11215 |
| Year built | 1931 |
| Apartments | 8 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A |
| BBL | 3004340054 |
Owner & management
| Owner | 639 UNION STREET, LLC 406 FIFTH AVE #181 · Brooklyn, NY 11217 |
| Managing agent | myriam nachimovsky |
Building conditions
| HPD violations | 75 open / 211 total · 4 in last 12 mo |
| HPD complaints | 0 open / 345 total |
| HPD registration last filed | October 6, 2025 |
Full building report — $9
Frequently asked questions
Is 639 Union St rent stabilized?
639 Union St in Carroll Gardens-Cobble Hill-Gowanus-Red Hook, Brooklyn is registered as rent stabilized in the New York State DHCR 2024 rent-stabilized building files. 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 639 Union St?
639 Union St (BBL 3004340054) has about 8 residential apartments and was built in 1931, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized, and the DHCR files this site is built on register the building rather than its individual apartments.
Other rent-stabilized buildings in Carroll Gardens-Cobble Hill-Gowanus-Red Hook
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