County Guides

How to appeal your property taxes, county by county

Deadlines, forms, filing steps, and local specifics — researched from official county sources. Don't see your county? Run the free check — it researches any US address on the spot.

Arizona

Maricopa County

Maricopa County’s 2026 assessment appeal deadline was Apr. 21. See exactly where to file, what evidence works, exemptions, and savings math.

California

Los Angeles County

LA County 2026 property tax appeal deadline is Nov. 30, 2026. Learn forms, filing options, fees, hearings, and savings examples.

Illinois

Cook County

Cook County 2026 assessment appeals close by township—Berwyn closes July 6; Stickney Aug. 12. File correctly and save money.

Pennsylvania

Philadelphia County

Philadelphia homeowners: file 2027 assessment appeals by Oct. 5, 2026. Get BRT forms, filing rules, evidence tips, and savings math.