Lead risk in Philadelphia, building by building.

This is a map of lead-paint risk taken all the way down to individual homes, here in North Philadelphia. Each dot is a real property from the City of Philadelphia's own assessment records, colored by the decade it was built. Older homes are far more likely to contain lead paint, so the age of a building is a strong first guess at where the hazards are.

6,000

homes mapped in North Philadelphia (ZIP 19132)

81%

built before 1940 (very likely lead paint)

data cost, public records

North Philadelphia (ZIP 19132). Each dot is one home, colored by lead-paint era. Hover any building. Red = built before 1940.

0 / 6,000 parcels

pre-1940 1940-1959 1960-1977 1978+

For lead programs New York example Detroit example For lead programs

Built from the City of Philadelphia OPA Properties Public dataset (OpenDataPhilly). Year built is an assessor value, mostly estimated, used for era bucketing. Lead-paint-by-era rates from the HUD National Survey of Lead and Allergens in Housing. This is a screening tool that shows where to look first, not a diagnosis of any specific home. Fluoro-Spec Inc. eric@fluorospect.com · 631-461-1838. See Safety & Compliance.