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520 4 Avenue is a walkup apartment building built in 1931 in Brooklyn with 8 residential units. It carries a Grade F health score, with 23 open Class C hazardous violations and a recurring pattern of habitability complaints (heat, electric, elevator, mold, lead, boiler, or unsanitary conditions) among the recorded concerns. Our analysis reviewed 1,151 records across 26 public data sources, benchmarked against similar mid-sized prewar residential buildings in NYC.
92 open violations are past the city's repair deadline. 23 hazardous (Class C) violations remain open in city records (17 opened in the last 2 years).
The grade measures tenant living conditions from public city records (violations, complaints, litigation). It is not a structural or construction-safety rating.
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Heat/Hot Water — Entire Building
Heat/Hot Water — Entire Building
Heat/Hot Water — Entire Building
Plumbing — Bathtub/Shower
Paint/Plaster — Ceiling
Unsanitary Condition — Mold
Housing Court: Tenant Action
Housing Court: Tenant Action/Harassment
Paint/Plaster — Ceiling
Paint/Plaster — Wall
Compliance recorded
Compliance recorded
Electrical
Heat / Hot Water
Window
Plumbing / Leak
Window
Heat / Hot Water
Heat / Hot Water
Financial recorded
This report is an informational tool based on publicly available government records and does not constitute a “consumer report” under the Fair Credit Reporting Act. Building grades are editorial opinions and should not be used as the sole basis for housing, lending, or employment decisions. Data sourced from HPD, DOB, DOF, ECB, FDNY, 311, and other NYC agencies. Report errors to data@openstoop.com. See our Terms and Privacy Policy.