NYC Building Violations by Borough
New York City publishes all open building violations from the Department of Buildings (DOB) and the Department of Housing Preservation and Development (HPD) on NYC Open Data. Select your borough to see what contractors are working with in each market.
NYC's most populous borough has the highest volume of violations. Dense pre-war residential stock drives heavy HPD violations. High opportunity for residential specialists.
High-value commercial and high-rise buildings. More DOB violations — elevators, facades, and fire safety. Jobs here tend to be larger-scale and higher-value.
NYC's largest borough by area with a mix of residential and commercial stock. Large apartment complexes and a growing number of new construction violations.
Heavily residential rental stock with aging building systems. HPD violations dominate — heat, hot water, mold, and lead paint. High opportunity for residential contractors.
Lower volume but significantly less contractor competition. More single-family and smaller buildings. Contractors who work here often find an easier path to the first call back.
Where Does This Violation Data Come From?
All violation data on this page and in the VioHunter dashboard comes directly from NYC Open Data — the official public data portal maintained by New York City. Specifically, VioHunter pulls from two datasets:
- DOB ECB Violations — issued by the Department of Buildings for structural, mechanical, and code violations
- HPD Maintenance Code Violations — issued by Housing Preservation & Development for habitability violations in residential buildings
Both datasets are updated by the city daily. Violation counts shown here are approximate and reflect typical open violation volumes — actual numbers change daily as new violations are issued and existing ones are corrected.
VioHunter scans NYC's DOB and HPD databases daily. Filter by borough, trade, and urgency. See owner contact info. Send outreach in one click.
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