HPD violation classes, explained

When an HPD inspector finds a condition that breaks the NYC Housing Maintenance Code, HPD issues a violation and gives it a class by how dangerous the condition is. Buildings on StreetSpy have 582,085 open class C, 1,369,485 class B and 666,063 class A violations, as of October 26, 2026.

Look up any NYC building:

The classes

Class C, immediately hazardous: for example no heat or hot water, lead-based paint or rodents. HPD gives the owner 24 hours to correct most class C conditions; some, such as lead-based paint, have a longer period set in the violation.
Class B, hazardous: for example broken or defective plaster or a water leak. Owners generally have 30 days to correct.
Class A, non-hazardous: for example painting walls and ceilings. Owners generally have 90 days to correct.
Class I: orders HPD issues, such as a lead paint order or an order to provide heat, that are not a hazard class.

Each violation carries its own dates in HPD's records. HPD Online shows them for every building.

Open and closed

A violation stays open until the owner certifies the repair and HPD accepts it, often after a reinspection. An old open violation can mean the condition is still there, or that the repair was never certified.

Rent-impairing violations

Some violations are classified rent-impairing under NY Multiple Dwelling Law section 302-a. Each building report shows how many open violations carry that classification. It does not say what a tenant may do about them; NY Courts explains how tenants ask Housing Court for repairs.

How StreetSpy counts them

The grade weighs open class C violations 3, class B 2 and class A 1, per 10 units. Class I orders are listed and counted in a building's open total, but not in the grade. The methodology has the full formula.

Sources

Other guides: Is my building rent stabilized?, How to check a landlord in NYC, NYC heat season rules. Tenant rights guide. Figures from city records as of Oct 26, 2026.