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How OPA Assesses Property

How does the Office of Property Assessment (OPA) evaluate your property? Learn what methods the OPA uses to establish an accurate property assessment.

Property Assessment Data

The Office of Property Assessment has conducted a full reassessment of all real property in Philadelphia as part of its work to maintain accurate, fair, and understandable property assessments.

First Level Review & Appeals

In the event that you disagree with the assessed value of your property, learn what steps you need to take to start the appeal process.

What's New

Translated Homestead Affidavit Now Available
TY15 Homestead Exemption Deadline is Less Than One Month Away
Abated Properties No Longer Eligible for Homestead Exemption
Have You Applied for the Homestead Exemption Yet? Easily Apply Online or Over-the-Phone
Mayor Nutter Reminds Homeowners About Deadline for Longtime Owner Occupants Program (LOOP)


A selection of terms relating to Assessments.

  • Assessment Date
  • Assessment Equity
  • Assessment Progressivity (Regressivity)
  • Assessment Ratio
  • Assessment Ratio Study
  • Geographical Market Area (GMA)
  • Level of Assessment; Assessment Ratio
  • Reappraisal
  • Reappraisal Cycle
  • Reassessment
  • Reevaluation
Full Glossary