Coming soon

Warren County Property Tax Appeal — Deadline and How to File

A large body of water with a bridge in the background
Photo by Yakov Leonov on Unsplash

The deadline

Filing deadline

September 1

per the Warren County Board of Assessment Appeals' Board of Assessment Appeals Rules of Procedure, checked 2026-09-10 — source

Who hears it, and where it goes

Your appeal is decided by the Warren County Board of Assessment Appeals.

Where to file

Warren County Assessment Office
Warren County Courthouse, 204 4th Ave
Warren, PA 16365

The form: Warren County Assessment Appeal Form.

Filed by mail or in person, Monday to Friday, 8:30 AM to 4:30 PM.

Not accepted by fax.

An appeal received after the deadline is rejected.

per the Warren County Assessment Office's Board of Assessment Appeals Rules of Procedure, checked 2026-09-10 — source

Nearby counties

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 100% of current market. Confirm the ratio on your notice (53 Pa.C.S. §8854).

Warren 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 Warren 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 Warren 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 Warren County?
The deadline is September 1 — per the Warren County Board of Assessment Appeals' Board of Assessment Appeals Rules of Procedure, checked 2026-09-10.
Who decides my appeal in Warren County?
The Warren County Board of Assessment Appeals.
Where do I send my appeal in Warren County?
To the Warren County Assessment Office, Warren County Courthouse, 204 4th Ave, Warren, PA 16365 — per the Warren County Assessment Office's Board of Assessment Appeals Rules of Procedure, checked 2026-09-10. The form is the Warren County 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 Warren 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].