Independent informational website — not affiliated with any county, assessor, appraisal district, tax office or government agency.
county system

Colorado property records and assessment offices

County assessors value property and maintain parcel records; county treasurers generally collect taxes.

Correct office term: County Assessor.

How the Colorado system works

County assessors value property and maintain parcel records; county treasurers generally collect taxes.

County assessors determine actual and assessed values under a biennial reappraisal system. Treasurers collect tax and Boards of Equalization hear later-stage protests.

AssessmentCounty Assessor
Appeal bodyCounty Board of Equalization
Tax collectionCounty Treasurer
Recorded documentsCounty Clerk and Recorder

Before opening a property portal

  • Identify whether the task concerns value, payment, recorded documents or an appeal.
  • Use the official office or authorized portal listed on a completed county page.
  • Do not assume a county office handles municipal assessment where the state uses city or town systems.
  • Confirm filing dates for the current year before submitting an exemption or appeal.

Available county and local guides