307 Cooper Street, Brooklyn

City inspectors were last at this 7-unit condominium on July 3, 2026, and the resulting violation remains open.

307 Cooper Street is a 7-unit building in Brooklyn, New York City (BBL 3034377504). This building is associated with 303 Cooper LLC. Brix tracks 12 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 2014, this condominium sits in Brooklyn and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

Tenants have filed 4 HPD complaints about this building over the last five years, most often about general.

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

• General: 4 complaints

The most recent complaint on this building was filed June 4, 2026.

Conditions cited on open violations at this address:

• § 27-2005 HMC: PROPERLY REPAIR OR REPLACE THE BROKEN OR DEFECTIVE INTERCOM SYSTEM AT BUILDING FRONT AT SOUTH WALL
• § 27-2005, 2007 ADM CODE REMOVE ALL ENCUMBRANCES CONSISTING OF BOOKSHELVES AND HOUSEHOLD ITEMS AT PUBLIC HALL, 3rd STORY
• § 27-2005 HMC: POST, IN A FORM APPROVED BY THE COMMISSIONER, AND MAINTAIN A NOTICE IN A COMMON AREA OF THE BUILDING REGARDING THE PROCEDURES THAT SHOULD BE FOLL
• §27-2045(B)(5) HMC, § 12-01 RCNY POST A PROPER NOTICE OF SMOKE DETECTOR REQUIREMENTS, IN A FORM APPROVED BY THE COMMISSIONER, AT OR NEAR THE MAILBOX MISSING AT

The building last changed hands on July 23, 2026, according to recorded deeds.

View the Building Report on Brix.

See every NYC building owned by 303 Cooper LLC on the landlord portfolio page.