El Paso County Residential Property Valuations Appeals

For El Paso County residential property valuations, the 2026 Notice of Valuation (NOV) appeal window is:

• May 1, 2026 through June 8, 2026 for real property (homes, land, residential property). 

That means your appeal must be:

• submitted online,
• delivered in person, or
• postmarked by June 8, 2026. 

You can file online through the assessor’s appeal portal here:
El Paso County Assessor Appeals Page
A couple important things:

• Colorado reappraises residential property every odd-numbered year, so the 2025 valuation affects taxes payable in 2026. 
• The valuation is based mainly on comparable sales from Jan. 1, 2023 through June 30, 2024. 
• If the assessor denies or partially denies your protest, the next appeal step to the County Board of Equalization is generally due by July 15, 2026. 

One of the strongest appeal strategies is usually:

1. Find truly comparable sales within that statutory window.
2. Show condition differences (original baths, deferred maintenance, busy road, backing issues, etc.).
3. Point out factual errors in the assessor record (sq ft, finish level, basement finish, garage size, etc.).