El Paso County, Colorado Property Tax Appeal Guide for 2027

What deadline matters first

For the 2027 tax year in El Paso County, the regular real-property assessor protest window is treated as May 1, 2027 through June 8, 2027. Colorado law sets the real-property objection and protest timing, and El Paso County describes the assessment appeal process as May 1 - June 8 on its assessor appeal page (Colorado Revised Statutes section 39-5-122, El Paso County Assessor).

Do not wait to gather evidence after you file. El Paso County tells taxpayers to upload or surrender supporting documentation when the appeal is filed, such as comparable sales, a recent appraisal, photographs, or a written condition description (El Paso County Assessor).

A rough effective tax rate for planning is 0.41% of market value. That is not an appeal rule and it is not your personal tax rate. Colorado tax bills depend on assessed value multiplied by the combined mill levies for your tax district, so the actual effect of a value change can vary by address (El Paso County Treasurer).

For context, a 2025 meeting-summary article reported an appeal count of 7,906 property appeals filed in El Paso County for 2025, with 46% adjusted. Treat that as a cited volume example, not a promise that any 2027 appeal will have the same result (Citizen Portal).

The common value appeal

The common homeowner issue is Value too high / incorrect actual value. In plain English, you are saying the assessor’s actual value is higher than what similar homes supported in the market as of Colorado’s level-of-value date.

For the 2027 reappraisal, the level-of-value date is treated as June 30, 2026. The ordinary sales study period is January 1, 2025 through June 30, 2026, based on Colorado’s 18-month reappraisal data-gathering rule and El Paso County’s published reappraisal explanation (Colorado Division of Property Taxation, Real Property Valuation Manual, El Paso County Assessor).

For residential real property in Colorado, value is based on the market approach. El Paso County also warns that a simple square-foot price is not the market approach. A stronger file usually compares similar homes and explains why their sales better reflect your property’s value (El Paso County Assessor).

Other reasons you might appeal

Incorrect classification means the property is in the wrong assessment class or use category. For example, you may believe the property has been treated as a different use than it really has.

Wrong information / incorrect property record means the assessor’s inventory is wrong. This can include incorrect improvement details, land information, condition, quality, size, or other descriptive facts that affect value or classification. El Paso County specifically tells taxpayers to look for wrong assessor information when reviewing value (El Paso County Assessor).

Unusual condition / condition or inventory change means the assessment does not reflect something unusual or changed about the property. Examples can include condition issues, demolition, fire, detrimental elements, additions, remodeling, change of use, or other changes that affect the property record or value.

These reasons should be tied to documents or facts. A short explanation helps, but photos, repair information, permit records, property-record screenshots, or comparable sales are usually more useful than a general statement that the taxes feel too high.

If your Notice of Assessment says something else changed

A Notice of Assessment is the plain-English name for the assessment notice a homeowner receives. In El Paso County, the official label is Notice of Valuation (NOV). The NOV is not a tax bill. It is the notice showing the county’s value or assessment information for your property (El Paso County Assessor).

If your NOV shows a value change, classification change, or property detail that looks wrong, start by comparing it with your home’s real facts. Check living area, finished basement, garage, land, quality, condition, use, and any recent construction or damage.

El Paso County’s assessment calendar refers to the assessor sending the Notice of Valuation (NOV) for real property with an appeal form, and it also refers to the County Board of Equalization (CBOE) sitting to hear valuation appeals (El Paso County Assessment Calendar). Keep the NOV with your records because it helps you identify what the county changed and what deadline applies.

What evidence helps

Start with comparable sales that are true, typical, negotiated, qualified, and confirmed sales of real property. For 2027, the first sales window to review is January 1, 2025 through June 30, 2026, adjusted or trended to the June 30, 2026 level-of-value date (Colorado Division of Property Taxation, Real Property Valuation Manual).

El Paso County suggests comparing similar neighborhood properties and reviewing re-appraisal sale data. The county also lists examples of supporting documentation, including comparable sales, recent appraisals, photographs, and written condition descriptions (El Paso County Assessor).

There is no published El Paso County rule that every homeowner must use a fixed distance, fixed square-footage range, fixed lot-size range, or fixed number of comparable sales. As a cautious starting point, look first for sales within about 1 mile, with similar use, neighborhood or economic area, size, quality, condition, age, and lot utility.

Some homes need broader research. Rural properties, unusual homes, custom construction, low-sales neighborhoods, or properties with special conditions may need a wider similar economic area. Colorado guidance focuses on similarity, dissimilarity, representative sales, and time adjustment rather than a single one-size limit (Colorado Division of Property Taxation, Real Property Valuation Manual).

What the board can and cannot decide

The first filing goes to the assessor. If you do not agree with the Assessor’s decision, El Paso County says you may continue your appeal to the County Board of Equalization (CBOE) (El Paso County Assessor).

The CBOE can review value and classification issues. The El Paso County Clerk and Recorder explains that independent referees conduct hearings and may make value adjustments, with a final written decision mailed after the hearing (El Paso County Clerk and Recorder).

The assessor and CBOE do not decide whether local spending is too high, whether mill levies should be lower, or whether a tax bill is affordable. Mill levies are set by the applicable taxing authorities, and each tax district can be different (El Paso County Treasurer).

If you disagree with the CBOE decision, the county describes further review options as District Court, Binding Arbitration, or the Board of Assessment Appeals (El Paso County Clerk and Recorder). Those later steps have their own rules and deadlines.

How TaxSauce helps

TaxSauce helps you turn a confusing assessment notice into an organized filing package. We can estimate the possible tax impact using the approximate 0.41% planning rate, while reminding you that your actual tax effect depends on your tax district’s mill levies.

We can help screen comparable sales from the 2027 study period, flag possible assessor-record errors, organize photos and condition notes, and prepare a clear explanation tied to the official appeal reason. You review the evidence and choose what you want to submit.

TaxSauce does not promise a lower value, a tax reduction, or acceptance by El Paso County. The goal is to help you file a careful, understandable protest with the right facts attached before the deadline.