Is 673 Union St rent stabilized?
673 Union St is a registered NYC rent-stabilized building in Park Slope, Brooklyn (11215). It has about 8 apartments, built in 1920.
Also written as 673 Union Street — or 673 Union St, Brooklyn, NY 11215.
How this building compares
HPD lists 72 open violations here, about 9.0 per apartment — above the one for every 4 apartments median for tracked buildings in Park Slope. Of the 86 violations on record at the address, 2 are class C — HPD's immediately hazardous grade, and 1 of them is still open. HPD issued 1 new violation at the address in the last twelve months. Tenants have filed 52 HPD complaints at the address, none of them in the last twelve months.
Building details
| Borough | Brooklyn |
| Neighborhood | Park Slope |
| ZIP | 11215 |
| Year built | 1920 |
| Apartments | 8 |
| Rent-stabilized | Yes — DHCR registered |
| Stabilization code | MULTIPLE DWELLING A, GARDEN COMPLEX |
| BBL | 3009520069 |
Owner & management
| Owner | PHILIP DELDUCA 85 COLUMBUS AVE · STATEN ISLAND, NY 10304 |
| Managing agent | ELIZa DELDUCa |
Building conditions
| HPD violations | 72 open / 86 total · 1 in last 12 mo |
| HPD complaints | 0 open / 52 total |
| HPD registration last filed | October 23, 2025 |
Full building report — $9
Frequently asked questions
Is 673 Union St rent stabilized?
673 Union St in Park Slope, Brooklyn is registered as rent stabilized in the New York State DHCR 2024 rent-stabilized building files, where its stabilization codes are MULTIPLE DWELLING A and GARDEN COMPLEX. 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 673 Union St?
673 Union St (BBL 3009520069) has about 8 residential apartments and was built in 1920, from NYC PLUTO. PLUTO counts the building's units; it does not say how many of them are rent stabilized.