How did the Office of Property Assessments (OPA) arrive at my current property assessment value?
OPA assessors use a computer assisted mass appraisal system (CAMA) to help generate property assessment values. They determine value primarily by comparison with sales from 1999, 2000 and 2001 on properties with similar characteristics within your defined neighborhood. For increased accuracy, the system also takes into account the variations that exist within Allegheny County’s unique neighborhoods. Additionally, our assessors travel throughout the county to collect property data and review assessment valuations.
