509 Hinsdale Street
A 4-story building with 21 apartments, built in 1930, in Brooklyn, NY 11207.
Addresses on the lot: 505 to 509 Hinsdale Street.
HPD records as of November 5, 2026
509 Hinsdale Street has 443 open HPD violations, 163 of them immediately hazardous. Tenants made 71 complaints to HPD in the past year, 9 about heat or hot water. It is registered to Riverdale Properties LLC. 21 apartments were registered as rent stabilized in 2023.
Does 509 Hinsdale Street have open violations?
Yes: 443 open violations as of November 5, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 163 |
| B, hazardous | 30 days | 245 |
| A, non-hazardous | About 90 days | 35 |
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, 3 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 71 complaints to HPD in the 12 months to November 5, 2026, 9 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 509 Hinsdale Street?
509 Hinsdale Street is registered with HPD to Riverdale Properties LLC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
1 other building is registered to the same company name, with 0 open violations between them.
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 September 2026. HPD’s record has 22 cases here in all, going back to the 1990s.
The building is in HPD’s Alternative Enforcement Program, which takes on the city’s worst-maintained buildings.
City marshals carried out 5 evictions here in the five years to May 30, 2026.
For comparison, 6% of residential buildings in 11207 had a housing court case in the past five years.
Is 509 Hinsdale Street rent stabilized?
21 apartments were registered as rent stabilized in 2023, the same as in 2018. That’s 21 of the building’s 21 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
- 536 Williams Avenue22 apartments, built 1930
- 553 Hinsdale Street41 apartments, built 1930
- 590 Williams Avenue23 apartments, built 1930
- 453 Hinsdale Street60 apartments, built 2016
- 500 Livonia Avenue90 apartments, built 2016
- 481 Williams Avenue52 apartments
HPD violations, complaints, registrations and housing court cases as of November 5, 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 3-03835-0021.