HPD Violations Explained: What Class A, B, and C Mean for Renters

What Is HPD?

The NYC Department of Housing Preservation and Development (HPD) is the city agency responsible for enforcing housing maintenance standards. When tenants complain about conditions — or when HPD conducts an inspection — they issue violations against the building if problems are found.

Violations are public record. RenterBuzz pulls open violation data directly from NYC Open Data so you can see them before you sign a lease.

The Three Classes of Violations

Class A — Non-Hazardous

Class A violations are the least serious. They represent conditions that are below the maintenance standard but don't create an immediate health or safety risk. Examples include:

• Peeling paint in non-lead areas
• Broken tiles or flooring
• Minor plumbing issues (dripping faucets)
• Missing or broken window guards in apartments without children

What it means for renters: Class A violations should be corrected but aren't cause for alarm on their own. A few Class A violations in a large building is normal. Dozens of unresolved Class A violations suggest a landlord who doesn't maintain the property.

Class B — Hazardous

Class B violations represent conditions that are hazardous to health or safety. Examples include:

• No heat or hot water
• Vermin or rodent infestation
• Defective electrical wiring
• Water leaks causing dampness or mold growth
• Broken elevator
• Defective fire escape

What it means for renters: Class B violations are a yellow flag. They should be taken seriously. Ask the landlord directly about any open Class B violations and whether they've been addressed. Check the date — a violation from 3 years ago may have been fixed even if the record shows "open."

Class C — Immediately Hazardous

Class C violations are the most serious. They represent conditions that require immediate correction — typically within 24 hours. Examples include:

• No heat in winter (below 55°F)
• Lead-based paint hazards in apartments with children under 6
• Lack of hot water
• Sewage backup or flooding
• Severe structural damage
• Carbon monoxide detector absent or defective

What it means for renters: Multiple open Class C violations is a serious red flag. It means the landlord has failed to address conditions that are immediately dangerous — and HPD has documented it. Tread very carefully.

How to Use Violation Data Wisely

• Look at the date: A violation from 5 years ago may be resolved. A violation from 2 months ago is current.
• Look at the count relative to building size: 50 violations in a 500-unit building is very different from 50 violations in a 10-unit building.
• Look at the pattern: Multiple heat violations in a 6-month period suggests a chronic problem, not a one-time incident.
• Cross-reference with 311 complaints: On RenterBuzz, you can see both HPD violations and 311 complaint history for every building.