AR
ApartmentRanked

How We Score Buildings

ApartmentRanked scores every NYC rental building on a 0-100 scale using publicly available government data. Our goal: give renters the same information that landlords already have, in a format that's actually useful.

Data Sources

All our data comes from free, public NYC government sources:

  • HPD Violations — 8.3M+ housing maintenance code violations issued by the NYC Department of Housing Preservation and Development
  • HPD Buildings Registry — Every building under HPD jurisdiction with unit counts, stories, and registration info
  • HPD Registration Contacts — Owner and management company information for registered buildings

Scoring Formula

Each building's score (0-100) is a weighted combination of five factors:

Violation Frequency

Violations per unit in the last 12 months

30%

Violation Severity

Ratio of Class C (immediately hazardous) violations

25%

Resolution Speed

Average days to resolve violations

20%

Trend

Are violations increasing or decreasing year-over-year?

15%

Complaint Volume

Tenant complaints filed per unit

10%

Violation Classes Explained

Class C — Immediately Hazardous

Must be corrected within 24 hours. Examples: no heat/hot water, lead paint hazards, broken fire escapes, gas leaks, no running water.

Class B — Hazardous

Must be corrected within 30 days. Examples: roach/mouse infestation, leaking pipes, broken locks, mold, defective smoke detectors.

Class A — Non-Hazardous

Must be corrected within 90 days. Examples: minor peeling paint, small cracks, missing address numbers, minor wear and tear.

Limitations

  • We can only score buildings that have violation records. A building with zero violations may simply have never been inspected.
  • Violation data reflects complaints filed by tenants. Not all problems get reported.
  • Our scores do not reflect current rent prices, amenities, noise levels, or other subjective factors.
  • Data is updated monthly. Very recent violations may not yet appear.
  • Landlord grades are based on the buildings in our current dataset, not necessarily their complete portfolio.

Not Affiliated with NYC Government

ApartmentRanked is an independent project. We are not affiliated with, endorsed by, or connected to NYC HPD, the City of New York, or any government agency. All data is sourced from publicly available NYC Open Data portals.

Contact

Questions or feedback? Reach us at support@weblabra.com.