399 St Marks Avenue, Brooklyn

137 open HPD violations at this address, 22 of them class C — the immediately hazardous tier — on a 24-unit walk-up apartment building in Brooklyn.

399 St Marks Avenue is a 24-unit building in Brooklyn, New York City (BBL 3011480080). This building is associated with Knox Homes LP. Brix tracks 137 open HPD violations for this property, along with inspection history, DOB filings, tenant complaints, and rent stabilization status.

Built in 2000, 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 399 HPD complaints about this building over the last five years, most often about heat/hot water.

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

• Heat/hot Water: 108 complaints
• Plumbing: 73 complaints
• Door/window: 47 complaints
• Paint/plaster: 43 complaints

The most recent complaint on this building was filed September 25, 2026.

Conditions cited on open violations at this address:

• § 27-2005, 27-2007, 27-2041
• § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE CAULKING AT TOE MOULDING AT EAST AND SOUTH WALLS IN THE 1st ROOM FROM EAST AT S
• § 27-2005 ADM CODE PROPERLY REPAIR WITH SIMILAR MATERIAL THE BROKEN OR DEFECTIVE WOODEN STOOL AT WINDOW (3RD FROM EAST AT SOUTH) IN THE 1st ROOM FROM EAST AT SO
• § 27-2005 ADM CODE REPAIR THE BROKEN OR DEFECTIVE PLASTERED SURFACES AND PAINT IN A UNIFORM COLOR THE CEILING IN THE 1st ROOM FROM EAST AT SOUTH LOCATED AT APT

The building last changed hands on July 29, 2024, according to recorded deeds.

Brix score: 3/100. View the Building Report on Brix.

See every NYC building owned by Knox Homes LP on the landlord portfolio page.