Butler County Property Tax Appeal — Deadline and How to File
The deadline
Filing deadline
August 1
per the Butler County Board of Assessment Appeals' Assessment Rules and Regulations for Appeals, checked 2026-09-10 — source
Who hears it, and where it goes
Your appeal is decided by the Butler County Board of Assessment Appeals.
Where to file
Butler County Assessment OfficeP.O. Box 1208
Butler, PA 16003
The form: Residential Assessment Appeal Form.
Filed by mail or in person at 124 W Diamond Street, Butler, weekdays 8:30 a.m. to 4:30 p.m..
A mailed appeal that arrives late still counts if it was postmarked by the deadline.
per the Butler County Assessment Office's Assessment Rules and Regulations for Appeals, checked 2026-09-10 — source
Nearby counties
- Armstrong County — Armstrong County Board of Assessment Appeals
- Allegheny County — Board of Property Assessment Appeals and Review
- Venango County — Venango County Board of Assessment Appeals
- Indiana County — Indiana County Board of Assessment Appeals
- Westmoreland County — Westmoreland County Board of Assessment Appeals
- Jefferson County — Jefferson County Board of Assessment Appeals
More: the county index and the Pennsylvania guide.
What your assessed value means here
Pennsylvania — assessed at a base-year value; the STEB Common Level Ratio for your county is about 6% of current market. Confirm the ratio on your notice (53 Pa.C.S. §8854).
Butler County's common level ratio is drawn from the 2025 CLR (2024 sales data; effective 7/1/2026–6/30/2027) table — the same figure the app uses to compare your assessment to current market value.
Can the board raise your assessment?
Yes. The Butler County Board of Assessment Appeals can raise your assessment on your own appeal, not only lower it. That is the risk you take by filing, and it is why the case has to be worth making before you file it.
What a board actually weighs
The Butler County Board of Assessment Appeals decides what your property was worth on the valuation date, so recent comparable sales carry the case, not the size of the bill. The Pennsylvania guide covers the evidence.
Common questions
- When is the deadline to appeal my property assessment in Butler County?
- The deadline is August 1 — per the Butler County Board of Assessment Appeals' Assessment Rules and Regulations for Appeals, checked 2026-09-10.
- Who decides my appeal in Butler County?
- The Butler County Board of Assessment Appeals.
- Where do I send my appeal in Butler County?
- To the Butler County Assessment Office, P.O. Box 1208, Butler, PA 16003 — per the Butler County Assessment Office's Assessment Rules and Regulations for Appeals, checked 2026-09-10. The form is the Residential Assessment Appeal Form.
Sources
Property tax rules and deadlines vary by jurisdiction and can change — verify with your county before relying on this.
PROppeal is coming soon for Butler County
When it launches, PROppeal will check your case against real, recent comparable sales and give you an honest verdict — then build the board-ready letter to file — $29.99, no percentage of your savings.
Want a heads-up when it’s live? Email [email protected].