509 West 174th Street
A 5-story building with 32 apartments, built in 1910, in Manhattan, NY 10033.
Addresses on the lot: 509 to 511 West 174th Street.
HPD records as of October 28, 2026
509 West 174th Street has 2 open HPD violations, 2 of them immediately hazardous. Tenants made 4 complaints to HPD in the past year, 2 about heat or hot water. It is registered to 509 REALTY GROUP, LLC. 29 apartments were registered as rent stabilized in 2019.
Does 509 West 174th Street have open violations?
Yes: 2 open violations as of October 28, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 2 |
| B, hazardous | 30 days | 0 |
| A, non-hazardous | About 90 days | 0 |
It has an open class C violation, as 66% of NYC buildings with 20 to 49 apartments do. More on buildings by size
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 4 complaints to HPD in the 12 months to October 28, 2026, 2 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 West 174th Street?
509 West 174th Street is registered with HPD to 509 REALTY GROUP, 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
None in the past five years. HPD’s record has 3 older cases, the latest from 2020.
City marshals carried out no evictions here in the five years to May 30, 2026.
For comparison, 37% of residential buildings in 10033 had a housing court case in the past five years.
Is 509 West 174th Street rent stabilized?
29 apartments were registered as rent stabilized in 2019, the same as in 2018. That’s 29 of the building’s 32 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
- 515 West 174th Street24 apartments, built 1925
- 503 West 174th Street25 apartments, built 1910
- 185 Audubon Avenue35 apartments, built 1915
- 2308 Amsterdam Avenue58 apartments, built 1911
- 520 West 174th Street32 apartments, built 1927
- 516 West 174th Street21 apartments, built 1915
HPD violations, complaints, registrations and housing court cases as of October 28, 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 1-02131-0055.