503 12th Street
A 4-story building with 34 apartments, built in 1916, in Brooklyn, NY 11215.
Addresses on the lot: 503 to 505 12th Street, 507 to 509 12th Street.
HPD records as of October 23, 2026
503 12th Street has 46 open HPD violations, 32 of them immediately hazardous. Tenants made 40 complaints to HPD in the past year, 24 about heat or hot water. It is registered to 503-9 12 ST LLC. 12 apartments were registered as rent stabilized in 2023.
Does 503 12th Street have open violations?
Yes: 46 open violations as of October 23, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 32 |
| B, hazardous | 30 days | 11 |
| A, non-hazardous | About 90 days | 3 |
It has an open class C violation, as 66% of NYC buildings with 20 to 49 apartments do. More on buildings by size
Of the violations HPD wrote here in the past year, 5 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 40 complaints to HPD in the 12 months to October 23, 2026, 24 of them about heat or hot water. Complaints reach HPD through 311; an inspector may then write a violation.
Among NYC buildings with 20 to 49 apartments, 69% had at least one complaint to HPD in the past year, and 53% had one about heat or hot water.
Every complaint on HPD Online ↗ · Noise complaints go to 311, not HPD
Who owns 503 12th Street?
503 12th Street is registered with HPD to 503-9 12 ST LLC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
The registration on HPD Online ↗ · The owner’s other buildings, on Who Owns What ↗ · Deeds and mortgages (ACRIS) ↗ · How to find who owns a building
Housing court and evictions
The latest housing court case over conditions or harassment opened in June 2026. HPD’s record has 2 cases here in all, going back to the 1990s.
City marshals carried out no evictions here in the five years to May 30, 2026.
For comparison, 1% of residential buildings in 11215 had a housing court case in the past five years.
Is 503 12th Street rent stabilized?
12 apartments were registered as rent stabilized in 2023, down from 13 in 2018. That’s 12 of the building’s 34 apartments. Whether one apartment is stabilized is in its rent history, which the tenant can ask the state for.
How to check if an apartment is rent stabilized
Scores out of ten, from today’s records
Score this buildingThe address check reads the latest complaints and violations and scores the building, the landlord, the noise on the block and the walk to the subway. On a StreetEasy listing, the Chrome extension adds light for the floor and value for the rent.
Buildings nearby
- 163 Prospect Park West26 apartments, built 1999
- 150 Prospect Park West30 apartments, built 1922
- 558 11th Street24 apartments, built 1929
- 145 Prospect Park West27 apartments, built 1912
- 459 15th Street20 apartments, built 1912
- 195 Prospect Park West21 apartments, built 1905
HPD violations, complaints, registrations and housing court cases as of October 23, 2026; evictions and rent-stabilized counts as of May 30, 2026; size and age from the city’s PLUTO. All from NYC Open Data. Public records, not legal advice. Tax lot 3-01097-0056.