The residential real estate assessment date is January 1 of each year for taxes payable the following year. For residential properties, the Assessor must estimate actual market value. This is based on size, amenities, location, etc., then it is compared to like-properties that have sold during a 24-month time span. This time span is titled the “data gathering period.” Those sales nearest to the end of the 24-month period would be the most representative.
Residential properties may only be valued by the Market approach pursuant to Colorado Revised Statute 39-1-103(5)(a), which reads in part, “…The actual value of residential real property shall be determined solely by consideration of the market approach to appraisal.”