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Colorado property tax appeals

Colorado reappraises every odd year, and there's no cap on residential values. The 2027 notices bring the next big chance to protest.

The rules in Colorado

Topic	Colorado
Value date	Market as of June 30 of the prior even year; reset every odd year
Deadline	Protest to the assessor May 1 – June 8
How it's filed	Assessor protest, then County Board of Equalization, then the state Board of Assessment Appeals, court or arbitration
Your agent	A letter of agency from the owner of record
Filing fee	None at the assessor and county board
Our fee	30% of first-year tax savings — nothing if your bill doesn't go down

We cover all 64 Colorado counties, with a focus on the Front Range. The main window is May 1 – June 8 in reappraisal years.