Jefferson County Property Tax Appeal — Deadline and How to File
The deadline
Filing deadline
September 1
per the Jefferson County Board of Assessment Appeals' Application for Assessment Appeal, checked 2026-09-10 — source
Who hears it, and where it goes
Your appeal is decided by the Jefferson County Board of Assessment Appeals.
Where to file
Jefferson County Board of Assessment Appeals200 Main Street, Suite 106 B
Brookville, PA 15825
The form: Application for Assessment Appeal — one for each parcel.
A filing fee is due with the appeal.
per the Jefferson County Board of Assessment Appeals' Application for Assessment Appeal, checked 2026-09-10 — source
Nearby counties
- Clearfield County — Clearfield County Board of Assessment Appeals
- Armstrong County — Armstrong County Board of Assessment Appeals
- Indiana County — Indiana County Board of Assessment Appeals
- Venango County — Venango County Board of Assessment Appeals
- Cameron County — Cameron County Board of Assessment Appeals
- Butler County — Butler 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 19.08% of current market. Confirm the ratio on your notice (53 Pa.C.S. §8854).
Jefferson 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 Jefferson 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 Jefferson 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 Jefferson County?
- The deadline is September 1 — per the Jefferson County Board of Assessment Appeals' Application for Assessment Appeal, checked 2026-09-10.
- Who decides my appeal in Jefferson County?
- The Jefferson County Board of Assessment Appeals.
- Where do I send my appeal in Jefferson County?
- To the Jefferson County Board of Assessment Appeals, 200 Main Street, Suite 106 B, Brookville, PA 15825 — per the Jefferson County Board of Assessment Appeals' Application for Assessment Appeal, checked 2026-09-10. The form is the Application for Assessment Appeal, one for each parcel.
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 Jefferson 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].