Douglas County Assessor Office

Find Douglas County Colorado assessor, assessment, auditor's, and appraiser's offices, revenue commissions, GIS, and tax equalization departments. Assessors provide information on property and land tax assessment, property listings, values, valuations, property search, and records.


Douglas County Assessor's Office 301 Wilcox Street Castle Rock CO 80104 303-660-7450


About the Douglas County Assessor Office

Assessor Offices in Douglas County, CO are responsible for assessing the values of all taxable property within their jurisdictions. Assessors appraise values of all land and commercial property (real property), and business' fixed asset (personal property). The office determines property tax values, tax rates, maintains and updates the local tax assessment rolls.

Property owners may contact the Department of Assessment for questions about:
  • Douglas County property tax appeals and challenges
  • Property tax assessments and reassessments
  • Douglas County GIS maps, plat maps, and property boundaries
  • Delinquent property taxes
  • Douglas County, CO property tax payments and due dates
  • Assessment rolls and property tax rates
Douglas County Property Records

Douglas County Assessors keep property records for all real property within their jurisdictions. The Office maintains records which include geographic area, land size, building size and type as well as GIS maps, plat maps, and property boundaries. The Office also maintains public records available for search, including historical assessments of real and personal property, property deeds and bills of sale.

Property Assessments

Tax assessors adjust Douglas County, Colorado real property valuations and real estate tax rates by tracking comparable real estate sales and market valuations. Assessors track zoning requirements, construction permits, renovations, demolitions, working with Building Departments and Inspectors to reflect accurate changes to the property list.

Property Re-Assessments

Real property assessments are reassessed at intervals set by the local government. During reassessments Douglas County Assessors update real property values based on changes in market conditions, additions and removals to the property list.

Douglas County, Colorado Personal Property Assessments

Businesses in Douglas County are responsible for self-reporting personal property to the office of the Tax Assessor.