521 Isham Street, Manhattan

City inspectors were last at this 60-unit walk-up apartment building on July 31, 2026, and the resulting violation remains open.

521 Isham Street is a 60-unit building in Manhattan, New York City (BBL 1022280045). This building is associated with Isham 521, LLC. Brix tracks 18 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 Manhattan and is tracked by Brix using public NYC records from HPD, DOB, ACRIS, and 311.

Tenants have filed 180 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: 61 complaints
• Paint/plaster: 25 complaints
• Plumbing: 21 complaints
• Door/window: 19 complaints

The most recent complaint on this building was filed July 30, 2026.

Conditions cited on open violations at this address:

• § 27-2005, 27-2007, 27-2041
• § 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
• § 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
• § 27-2013 ADM CODE PAINT WITH LIGHT COLORED PAINT TO THE SATISFACTION OF THIS DEPARTMENT AT NORTH WALL IN THE BATHROOM LOCATED AT APT 3B, 3rd STORY, 1st APARTME

The building last changed hands on December 23, 2020 for $1,696,842.24, according to recorded deeds.

Brix rating: Concerning (26/100). View the Building Report on Brix.

See every NYC building owned by Isham 521, LLC on the landlord portfolio page.