Northampton County Property Tax Appeal — Deadline and How to File
The deadline
Filing deadline
August 1
per the Revenue Appeals Board of Northampton County's Appeal Procedures, Rules, and Regulations, checked 2026-09-10 — source
Who hears it, and where it goes
Your appeal is decided by the Revenue Appeals Board of Northampton County.
Where to file
Revenue Appeals Board of Northampton CountyNorthampton County Courthouse, 669 Washington Street
Easton, PA 18042-7475
The form: Residential Appeal Form.
A filing fee is due with the appeal.
per the Revenue Appeals Board of Northampton County's Residential Appeal Form, checked 2026-09-10 — source
Nearby counties
- Lehigh County — Lehigh County Board of Assessment Appeals
- Monroe County — Monroe County Board of Assessment Revision
- Carbon County — Carbon County Board of Assessment Appeals
- Bucks County — Bucks County Board of Assessment Appeals
- Montgomery County — Montgomery County Board of Assessment Appeals
- Berks County — Berks 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 16.1% of current market. Confirm the ratio on your notice (53 Pa.C.S. §8854).
Northampton 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 Revenue Appeals Board of Northampton County 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 Revenue Appeals Board of Northampton County 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 Northampton County?
- The deadline is August 1 — per the Revenue Appeals Board of Northampton County's Appeal Procedures, Rules, and Regulations, checked 2026-09-10.
- Who decides my appeal in Northampton County?
- The Revenue Appeals Board of Northampton County.
- Where do I send my appeal in Northampton County?
- To the Revenue Appeals Board of Northampton County, Northampton County Courthouse, 669 Washington Street, Easton, PA 18042-7475 — per the Revenue Appeals Board of Northampton County's Residential Appeal Form, checked 2026-09-10. The form is the Residential 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 Northampton 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].