666 Willoughby Avenue
A 6-story building with 48 apartments, built in 1931, in Brooklyn, NY 11206.
Addresses on the lot: 664 to 670 Willoughby Avenue.
HPD records as of November 5, 2026
666 Willoughby Avenue has 48 open HPD violations, 11 of them immediately hazardous. Tenants made 33 complaints to HPD in the past year, 4 about heat or hot water. It is registered to IMPACCT PRESERVATION LLC. 36 apartments were registered as rent stabilized in 2023.
Does 666 Willoughby Avenue have open violations?
Yes: 48 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 | 11 |
| B, hazardous | 30 days | 29 |
| A, non-hazardous | About 90 days | 8 |
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, 33 have been closed.
Every violation on HPD Online ↗ · How to read HPD violations
What do tenants complain about?
Tenants made 33 complaints to HPD in the 12 months to November 5, 2026, 4 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 666 Willoughby Avenue?
666 Willoughby Avenue is registered with HPD to IMPACCT PRESERVATION LLC. The registration also names a head officer and a managing agent, the people HPD contacts about the building.
At least 50 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 2 older cases, the latest from 2015.
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 666 Willoughby Avenue rent stabilized?
36 apartments were registered as rent stabilized in 2023, the same as in 2018. That’s 36 of the building’s 48 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
- 660 Willoughby Avenue24 apartments, built 1927
- 676 Willoughby Avenue29 apartments, built 1931
- 217 Hart Street44 apartments, built 1926
- 281 Throop Avenue40 apartments, built 1931
- 671 Willoughby Avenue20 apartments, built 1931
- 675 Willoughby Avenue20 apartments, built 1916
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 3-01769-0011.