Appeals
Real Property Process
Property owners may appeal their values each year from May 1 through June 1*. The Assessor’s Office reviews the appeals and sends a Notice of Determination on June 30*, which outlines the decision and further appeal rights.
- For inquiries about the valuation of a Commercial Improved property, please make an appointment with our Commercial Appraiser using the following link: https://go.oncehub.com/Summit
Personal Property Process
The appeal period for personal property is June 15 through June 30 each year.* Notices of Determination are mailed July 10*.
*When a deadline falls on the weekend or holiday, the taxpayer, as well as the government, has until the following business day to timely file.
Submittal Information
Appeals to valuation may be submitted to the assessor via email, online filing, in person, or by mail. Please only submit your appeal using one of the appeal methods. Multiple submissions for the same schedule will be rejected.
To file via email: Send an email to assessor@summitcountyco.gov
To file via USPS mail delivery you MUST use our post office box:
P.O. Box 276
Breckenridge, CO 80424-0276
To file using an alternate shipping method:
208 E. Lincoln Ave.
Breckenridge, CO 80424
To file in-person: Due to COVID-19, the Assessor's Office is open for in-person visits by appointment only. Schedule a 15 minute appointment. Summit County's Public Health Order requires that individuals wear a mask or non-medical cloth face covering over both the mouth and nose at all times when entering and conducting business in County buildings and offices.
- To drop-off an appeal without an appointment: Appeals may be dropped off locally at any of the five ballot boxes located throughout the county at the Old County Courthouse in Breckenridge, the County Commons in Frisco, Dillon Town Hall, Frisco Town Hall, or the North Branch Library in Silverthorne.
Agents cannot appeal online. All documents must be submitted together at one time, and must include a current Letter of Authorization.
Appeals must be received or postmarked by the statutory deadlines indicated above. We recommend you have proof of timely mailing. If filing online, you must have the current year’s security key, which is provided on the Notice of Valuation.