📚 Historical article. This post reflects the law and County procedures when it was written. Deadlines, the Common Level Ratio and hearing rules have changed, and a new countywide reassessment has been ordered.
Read the current 2027 Tax Appeal Guide →Reassessment Guide →Originally published December 29, 2011. Updated October 2026.
On December 27, 2011, Allegheny County mailed new 2012 assessments to all residential properties in the City of Pittsburgh and Mount Oliver. Commercial assessments were set to be released on December 31, 2011. These deadlines applied only to City of Pittsburgh and Mount Oliver properties in that cycle.
Informal appeals had typically been used only to correct errors in property records, not to challenge the assessed value itself. At the time, it was unclear whether the informal process would allow value challenges, and County sources were giving conflicting answers. The most important thing for City and Mount Oliver owners was not to miss the February 10 formal deadline.
Owners in other municipalities would receive separate notices with separate deadlines.
One change that year was a control number printed on the assessment notice. That number was needed to file an appeal, so we asked clients to send us both sides of the notice they received.
A week later, the County stopped informal hearings. Read County Stops Informal Hearings.
Call 412-802-6666, text 412-855-5511, email info@pghfirm.com, or send us a message for a free consultation.
