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Property Tax Information for Thornton Residents 
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Protesting your property value or classification

You have the right to protest your real property value or its classification.

The legislature requires that all property in the State of Colorado be re-valued by County Assessors in every odd-numbered year (2009).  This notice reflects the change in the market value of your property from the appraisal date of June 30, 2006 to June 30, 2008.  Your actual value is determined after careful analysis of data derived from the marketplace between January 1, 2007 through June 30, 2008.

If you disagree with the "current year actual value" or the classification determined for your property, you may file a protest by mail or in person with the County Assessor. You must protest to the Assessor either by mail or in person no later than June 1st in order to preserve this right.

For additional information regarding your Notice of Valuation, please contact the Adams County Assessor's Office at 303-654-6038.

Colorado Senior Property Tax Exemption

This exemption for tax year 2009 has been suspended by the Colorado legislature due to the current economic condition. Applications are still being accepted for qualified individuals in preparation for the reinstatement of this exemption in future years. The senior exemption application is available at the following website...  

City of Thornton
9500 Civic Center Drive, Thornton, CO 80229
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