509 Hinsdale Street, Brooklyn

A massive backlog of 346 open violations, with active water leaks and power failures reported this July.

This 1930 pre-war building at 509 Hinsdale Street contains 21 apartments under head officer Barry Singer. The building has struggled with severe, unresolved infrastructure issues, placing it deep in the red. Three things to know:

The building carries 346 open violations. In a building with 21 apartments, that represents an average of over 16 unresolved health and safety issues per unit. This extreme volume indicates a long-term pattern of neglecting repairs rather than fixing and certifying them.

Two commercial food establishment complaints have been logged from inside the building. Two commercial food establishment complaints have been logged from inside the residential units. This pattern typically indicates commercial venting, kitchen exhaust, or heavy grease fumes bleeding up through the common building risers—a classic hidden nuisance you won't catch on a quick walk-through.

An active electrical outage and a heavy water leak both hit the building this July. Mid-summer heat is putting heavy strain on the building's infrastructure. Records show an open complaint for a building-wide power outage on July 16, 2026, followed four days later on July 20, 2026, by an open heavy-flow water leak and mold complaint.

Quieter signals on this building and the blocks around it:

• 9 door or window complaints have been reported inside the building.
• 13 plumbing complaints and 13 water leaks on file.
• 425 residential noise complaints within three blocks this past year, mostly banging.
• With 346 unresolved cases, the building sits heavily in the red.

509 Hinsdale Street is a 21-unit building in Brooklyn, New York City (BBL 3038350021). This building is associated with Crp 482 Riverdale Avenue Annex LLC. Brix tracks 363 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 1930, this walk-up apartment building sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

Tenants have filed 461 HPD complaints about this building over the last five years, most often about paint/plaster.

What tenants have called the city about here over the last five years:

• Paint/plaster: 82 complaints
• Unsanitary Condition: 70 complaints
• Door/window: 67 complaints
• Electric: 58 complaints

The most recent complaint on this building was filed July 20, 2026.

Conditions cited on open violations at this address:

• § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE ELECTRIC SWITCH COVER AT EAST WALL IN THE 3rd ROOM FROM EAST LOCATED AT APT 4F, 4th STORY, 2nd
• § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE LOCK AT APARTMENT ENTRANCE DOOR IN THE ENTRANCE LOCATED AT APT 1A, 1st STORY, 1st APARTMENT FR
• § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING IN THE BATHROOM LOCATED AT APT 2F, 2nd STORY, 2nd A
• § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR AT CEILING AND NORTH WALL IN THE 1st ROOM FROM EAST LOCATED AT

The building last changed hands on August 2, 2017, according to recorded deeds.

Brix rating: Concerning (0/100). View the Building Report on Brix.

See every NYC building owned by Crp 482 Riverdale Avenue Annex LLC on the landlord portfolio page.