306 Union Avenue
A 6-story building with 21 apartments, built in 1920, in Brooklyn, NY 11206.
HPD records as of October 24, 2026
306 Union Avenue has 9 open HPD violations. Tenants made 26 complaints to HPD in the past year, 12 about heat or hot water. It is registered to BROOKLYN NEIGHBORHOOD HDFC. 21 apartments were registered as rent stabilized in 2023.
Does 306 Union Avenue have open violations?
Yes: 9 open violations as of October 24, 2026. HPD sorts them by how soon the owner must fix them:
| Class | Deadline | Open |
|---|---|---|
| C, immediately hazardous | 24 hours for most | 0 |
| B, hazardous | 30 days | 9 |
| A, non-hazardous | About 90 days | 0 |
No class C violation is open. 66% of NYC buildings with 20 to 49 apartments have one. More on buildings by size
Of the violations HPD wrote here in the past year, 12 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 26 complaints to HPD in the 12 months to October 24, 2026, 12 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 306 Union Avenue?
306 Union Avenue is registered with HPD to BROOKLYN NEIGHBORHOOD HDFC. The registration also names a head officer, the person HPD contacts about the building.
10 other buildings are 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
None in the past five years. HPD’s record has 7 older cases, the latest from 2019.
City marshals carried out no evictions here in the five years to May 30, 2026.
For comparison, 5% of residential buildings in 11206 had a housing court case in the past five years.
Is 306 Union Avenue 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
- 5 Ten Eyck Street36 apartments, built 1920
- 11 Ten Eyck Street24 apartments, built 1920
- 288 Union Avenue25 apartments, built 2019
- 408 South 2nd Street30 apartments, built 1915
- 389 South 2nd Street22 apartments, built 1915
- 330 Union Avenue59 apartments, built 1991
HPD violations, complaints, registrations and housing court cases as of October 24, 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 3-02791-0001.