A southwestern Pennsylvania county has been ordered to conduct a countywide property reassessment after going more than a decade without one. Allegheny County last reassessed in 2012, but if this reassessment stays on schedule, the process should be completed no later than 2032.

What Happened

Common Pleas judge, Kenneth G. Valasek ruled on August 18th that Allegheny County must “have materially and substantially commenced the reassessment process” by July 1, 2027. However, the full assessment has a deadline of 5 years, putting the completion year at 2032.

The order follows a lawsuit filed in 2025 by a resident of Churchill, PA who argued that the outdated values caused an unfair tax burden for owners of property that had not been reassessed in years.

The county indicated that it will comply and has also signaled that it will move to regular reassessments in the future.

What the Order Requires

  • The county has 6 months to hire a contractor for the reassessment
  • Work must begin within three months of the contractor being hired
  • The process may include in-person data collection, computer modeling, and aerial photography
  • A court-appointed party will oversee compliance with the order

Why It Matters

Properties that have been underassessed for years could now see a sharp increase in value once the reassessment takes effect. Pennsylvania state law limits local governments from collecting more total tax revenue as a result of reassessment. However, individual property tax bills can still shift significantly based on updated values.

This follows a consistent pattern in Allegheny County. The 2012 and 2002 reassessments were also the result of court orders rather than voluntary county action. Pennsylvania remains the only state without a required schedule for reassessments, which is why the timing and frequency of these events often comes down to litigation rather than policy.

What to Watch

Although the county has not committed to a fixed schedule for future reassessments, a county councilor has proposed legislation that would require reassessment every three years, and a state senator has a bill pending that would set statewide deadlines. Neither has passed yet, so the frequency of future reassessments after 2032 remains unsettled.

For property owners in Allegheny County, this means valuations that have not moved in over a decade are about to change, and the size of that change will vary widely by proerty.

KE Andrews tracks reassessment activity like this across the country and helps commercial property owners build a plan before new values are set, not after. Get in touch with our team today and partner with a group that proactively manages your reassessment exposure.