# Allegheny County Property Tax Reassessment Guide

> Allegheny County's court-ordered property tax reassessment starts July 2027, changing tax bills for homeowners.
- Title: Allegheny County Property Tax Reassessment Guide | Shortify
- Summary: Allegheny County's court-ordered property tax reassessment starts July 2027, changing tax bills for homeowners. Allegheny County's reassessment of property…
- Keywords: allegheny county, property tax, reassessment, millage rate, pittsburgh, school district tax, homestead exemption, senior tax relief, science, ideas, Allegheny, County
- Source: The Conversation — https://theconversation.com/allegheny-county-is-reassessing-every-property-heres-how-your-tax-bill-is-calculated-now-291826
- Author: Elizabeth Jane Beckett-Camarata
- Read time: 1 min
- Topics: allegheny county, property tax, reassessment, millage rate, pittsburgh, school district tax, homestead exemption, senior tax relief, science, ideas
## Court-ordered reassessment begins
Allegheny County will reassess every property for the first time since 2012, starting July 1, 2027.
## Goal: Update property values
The reassessment aims to align property values with today's market to adjust tax burdens across the county.
## State rules may require rate cuts
Pennsylvania's anti-windfall rules could force local governments to lower tax rates after reassessment to balance the tax burden.
## What your home is worth
Allegheny County assesses properties at full market value but uses 2012 values, creating a 14-year gap between current and past values.
## Millage rates for taxes
Pittsburgh property owners pay taxes to three entities: Allegheny County (6.43 mills), City of Pittsburgh (9.67 mills), and Pittsburgh Public Schools (10.457 mills).
## School taxes are largest share
School taxes make up the biggest slice of property tax bills, with rates ranging from 20.4 mills in North Allegheny to 32.6 mills in Penn Hills.
## Homestead exemption helps homeowners
The Allegheny County Homestead exemption (Act 50) cuts $18,000 from county taxes for owner-occupied primary residences with no income limit.
## Senior tax relief for qualifying homeowners
Seniors aged 60+ with household incomes under $30,000 and 10+ years home ownership get 30% off county taxes.
## Appeal process for high assessments
Homeowners can appeal assessments to the Board of Property Assessment Appeals and Review, with filing windows ending Sept. 1, 2026, and next window July 1 to Sept. 1, 2027.
## Key takeaway

Allegheny County's reassessment of property values since 2012 will adjust tax bills based on current market values and millage rates.