Public source directory
Public property-data sources by city
propOPEN makes selected public-record research easier, but the responsible government agency remains the source to consult for verification. These links are provided to help you check a material fact at the source.
Los Angeles County
- Los Angeles County Assessor portal — assessor parcel, map, and assessment information.
- Los Angeles County Property Tax Portal — tax-bill and payment information.
- City of Los Angeles permit data — issued building permits within the City of Los Angeles.
New York City
- NYC PLUTO / MapPLUTO — planning and tax-lot reference data.
- NYC Department of Finance property resources — official property-tax resources.
Phoenix / Maricopa County
- Maricopa County Assessor — parcel search and assessment records.
Dallas County
- Dallas Central Appraisal District — property search and appraisal-district records.
Washington, DC
- DC MyTax — District tax and real-property resources.
- Open Data DC — District GIS and open-data catalog.
Philadelphia
- City of Philadelphia property search — public property-assessment information.
- OpenDataPhilly — municipal open-data catalog and parcel-related datasets.
Availability and fields can change. A public portal may be unavailable, revise a dataset, omit a field, or describe a record differently from another agency. Verify important facts with the relevant source before acting.
Read propOPEN’s methodology