643 Willoughby Avenue, Brooklyn

City inspectors were last at this 8-unit walk-up apartment building on June 10, 2026, and the resulting violation remains open.

643 Willoughby Avenue is a 8-unit building in Brooklyn, New York City (BBL 3017600051). This building is associated with The City Of New York. Brix tracks 10 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 1931, 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 23 HPD complaints about this building over the last five years, most often about unsanitary condition.

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

• Unsanitary Condition: 7 complaints
• Water Leak: 3 complaints
• Safety: 3 complaints
• Plumbing: 3 complaints

The most recent complaint on this building was filed August 23, 2026.

Conditions cited on open violations at this address:

• §27-2104(B) HMC POST A PROPER NOTICE REGARDING RENT STABILIZATION LAW, IN A FORM APPROVED BY THE COMMISSIONER, IN A CONSPICUOUS LOCATION WITHIN THE COMMON AREA
• § 27-2045(B)(1)(B) HMC, § 12-06, § 12-07, § 12-09 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL CARBON MONOXIDE DETECTING DEVICE, INSTALLED IN ACC
• HMC ADM CODE: § 27-2017
• § 27-2045(B)(1)(A) HMC, § 12-01, § 12-03 RCNY REPAIR, REPLACE OR PROVIDE AN APPROVED AND OPERATIONAL SMOKE DETECTING DEVICE, INSTALLED IN ACCORDANCE WITH DEPART

The building last changed hands on September 26, 2023, according to recorded deeds.

Brix score: 1/100. View the Building Report on Brix.

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