Coming soon

Clinton County Property Tax Appeal — Deadline and How to File

a house on a hill covered in snow
Photo by Nellie Adamyan on Unsplash

The deadline

Filing deadline

September 1

per the Clinton County Board of Assessment Appeals' Appeals page, checked 2026-09-10 — source

Who hears it, and where it goes

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

Where to file

Clinton County Assessment Office
Piper Building, 2nd floor, 2 Piper Way
Lock Haven, PA 17745

Ask for the property value appeal form by telephone or in writing, or pick one up at the office; use a separate form for each property.

per the Clinton County Assessment Office's Appeals page, 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 51.81% of current market. Confirm the ratio on your notice (53 Pa.C.S. §8854).

Clinton 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 Clinton 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 Clinton 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 Clinton County?
The deadline is September 1 — per the Clinton County Board of Assessment Appeals' Appeals page, checked 2026-09-10.
Who decides my appeal in Clinton County?
The Clinton County Board of Assessment Appeals.
Where do I send my appeal in Clinton County?
To the Clinton County Assessment Office, Piper Building, 2nd floor, 2 Piper Way, Lock Haven, PA 17745 — per the Clinton County Assessment Office's Appeals page, checked 2026-09-10. Ask for the property value appeal form by telephone or in writing, or pick one up at the office; use a separate form for each property.

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 Clinton 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].