Grounds For Appealing Property Tax Assessments In Colorado

By Trevor McAmis | June 8, 2023

Grounds For Appealing Property Tax Assessments In Colorado

Posted by Trevor McAmis on May 19, 2023 8:22:11 PM

A Guide for Commercial Real Estate Investors

In the realm of property ownership, property taxes are a critical component that can significantly impact your bottom line. The basis for these taxes is your property's assessed value - an estimate of its market value. As a commercial real estate investor, it's crucial to ensure that your property is fairly assessed. An overvaluation can lead to inflated taxes, eating into your profits. Therefore, understanding the process of appealing unfair assessments is of utmost importance.

Understanding Property Tax Assessment in Colorado

Having a comprehensive understanding of how property tax assessments work in Colorado is the first step towards ensuring you're not overpaying on taxes.

Property Tax Assessment Process in Colorado

The property tax assessment process in Colorado begins with the county assessor estimating the market value of your property. This estimate includes the value of the land and any improvements, such as buildings or other structures. The assessor uses various methods to derive this value, including comparing your property to similar properties recently sold in the area.

Assessment Rate and Mill Levy

In Colorado, the taxable value of your property isn't the same as the market value estimated by the assessor. Instead, a specific percentage, known as the assessment rate, is applied to this market value to derive the taxable value.

Moreover, the actual tax you owe is determined by applying a tax rate, known as the mill levy, to this taxable value. The mill levy is set by various taxing authorities in your area, such as school districts and city councils.

The Role of County Assessors in Property Valuation

The county assessor's role is crucial in the property tax equation. Assessors are responsible for estimating the market value of all properties in their jurisdiction. They do this by conducting regular assessments, during which they review recent property sales, among other factors.

Assessors are also responsible for maintaining property records, which can include details about the property's size, type, age, and condition. These records are used during the assessment process and can impact the estimated market value of your property. It's crucial to ensure these records are accurate and up-to-date. You can check your property's records by contacting your county assessor's office or visiting their website.

By understanding the property tax assessment process, the concept of assessment rate and mill levy, and the role of county assessors in property valuation, you can be better prepared to identify any potential inaccuracies in your property's assessed value and take appropriate action.

For further reading, you may refer to the Colorado Department of Local Affairs and Denvergov's property tax explanation.

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Common Reasons for Property Tax Appeals

Understanding the common reasons that underpin property tax appeals can help commercial real estate investors spot potential issues with their own assessments. If your case aligns with any of the scenarios outlined below, you might have a valid reason to appeal.

Overvaluation of the Property

The most common reason for a property tax appeal is a simple overvaluation of the property. If the county assessor's estimated market value is significantly higher than what you believe the property is worth based on recent comparable sales, you may have grounds for an appeal.

Errors in Property Description or Records

Another common trigger for property tax appeals are errors in the property description or records held by the county assessor's office. This could be an error related to the size, age, condition, or use of the property.

Unfair Comparison to Similar Properties

An appeal may be justified if the assessment is based on an unfair comparison to other properties. If the properties used as comparables are substantially dissimilar to your own or located in different market conditions, it could skew the valuation.

Recent Change in Property Status or Condition

Changes in the property's status or condition that are not reflected in the assessment can also provide grounds for an appeal. This includes recent renovations, damages, zoning changes, or other alterations that could impact the property's value.

Grounds for Appealing Property Tax Assessment in Colorado

The appeal process in Colorado is founded on the principles of fairness and accuracy in property taxation. Here's what you need to know:

What Constitutes Valid Grounds

The fundamental grounds for a property tax appeal in Colorado is a belief that your property's assessed value is not reflective of its actual market value. This could be due to any of the reasons outlined above: overvaluation, errors in property records, unfair comparisons, or recent changes to the property.

Specific Circumstances for Appeal

Beyond these general grounds, there are specific circumstances under which you can appeal. For instance, if your property is unique and there are no truly comparable properties in your area, the assessor may have difficulty estimating its value. Likewise, if there's been a significant decline in your local real estate market that's not reflected in your assessment, this could provide additional grounds for an appeal.

Legal Precedents and Court Rulings

Legal precedents play a crucial role in defining the grounds for a property tax appeal. In Colorado, these precedents have consistently underscored the importance of fair and accurate assessments. It's essential to refer to these legal precedents when preparing your appeal, as they can strengthen your case.

Remember, the Colorado Division of Property Taxation offers a wealth of information on the subject, including relevant legal precedents and court rulings. Availing yourself of these resources can help you navigate the appeals process more effectively.

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How to Determine if You Have Grounds for an Appeal

Determining if you have valid grounds for an appeal involves a process of research, comparison, and consultation. The following steps can help you identify any discrepancies in your property assessment.

Steps to Verify Your Property Description and Valuation

The first step is to thoroughly review your property records held by the county assessor's office. This includes checking the physical description of the property and verifying the accuracy of details such as the size, age, and condition of the property.

Comparing Your Property Valuation to Similar Properties

Next, you should compare your property's assessment to the assessments of similar properties in your area. This can provide an indication of whether your property might be overvalued. Resources such as Zillow or Redfin can provide valuable data for this comparison.

Consulting with Property Tax Professionals or Lawyers

If you suspect there might be an issue with your property assessment, it can be beneficial to consult with a property tax professional or lawyer. They can provide expert advice based on their experience and familiarity with local property tax laws and the appeals process.

Process of Appealing Property Tax Assessment in Colorado

How to Appeal Your Property Tax Assessment

The appeal process can seem complex, but with careful preparation, you can navigate it effectively. Here are the basics:

  1. Verify Information: Start by verifying the information the assessor's office holds about your property.
  2. Gather Evidence: Collect evidence to support your appeal. This might include recent sales data of similar properties, evidence of errors in the property's record, or proof of changes that affect property value.
  3. Submit Appeal: File your appeal within the stipulated deadline.

Step-by-step Guide to the Appeal Process

  1. Notice of Determination: You will receive a Notice of Determination from your county assessor's office detailing your property's assessed value. The date on this notice is important, as it determines the timeframe within which you can file an appeal.
  2. Prepare your appeal: Gather documentation to support your case, such as evidence of errors in property records or comparables showing your property's value is less than the assessed value.
  3. Submit your appeal: File your appeal with your county Board of Equalization (BOE). The specific process for doing this can vary by county, so it's recommended to contact your local BOE or visit their website for detailed instructions.

Timeframes and Deadlines for Filing an Appeal

In Colorado, the deadline for filing a property tax appeal is typically within 30 days of the date on the Notice of Determination. Be aware that missing this deadline can result in the loss of your right to appeal for that year.

What to Expect During the Appeal Hearing

At the appeal hearing, you'll present your case to the BOE. This will include presenting the evidence you've gathered and explaining why you believe your property's assessment is incorrect. The BOE will then review your case and make a determination.

Possible Outcomes of an Appeal and Next Steps if the Appeal is Unsuccessful

If your appeal is successful, your property's assessed value will be adjusted, which could result in lower property taxes. If your appeal is denied, you have the right to further appeal to the State Board of Assessment Appeals or to the district court within your county.

Tips and Tricks for a Successful Property Tax Appeal

Gathering and Presenting Compelling Evidence

Strong evidence is the linchpin of a successful property tax appeal. This can include data on comparable property sales, photographs showcasing property conditions, and expert appraisals. It's essential to present this evidence in a clear, organized manner to convincingly illustrate your case.

Strategies for Effective Communication and Negotiation

Communication is key during the appeals process. Clearly express your points and be prepared to respond to questions or objections. Moreover, negotiation skills can be invaluable, particularly if the assessor's office is open to dialogue and compromise.

Importance of Professional Assistance

Property tax professionals or lawyers can provide expert guidance, helping you navigate the complexities of the appeal process. Their expertise can enhance your understanding, ensure you're following the correct procedures, and ultimately, increase your chances of a successful appeal.

Other More In Depth Guides

We have county specific guides on some of the Colorado major markets (more coming soon):

Can You Appeal Property Taxes After the Deadline?

The property tax appeal process in Colorado is governed by strict deadlines. Missing these can unfortunately mean that you lose the chance to appeal for that tax year.

  1. Appeals After Deadline: As a rule, appeals cannot be submitted after the deadline. The Colorado Department of Local Affairs stipulates that property tax appeals must be filed within 30 days of the Notice of Determination.
  2. Exceptional Circumstances: In some unique situations, an appeal may be considered after the deadline. This generally requires demonstrating that the delay was due to extraordinary circumstances beyond your control. Legal advice should be sought in these situations.

Understanding the Tax Appeal Process

Navigating the tax appeal process requires understanding key steps and timeframes.

  1. Appeal Submission: Submit your appeal to the county Board of Equalization (BOE). Each county may have different processes for submission, so be sure to familiarize yourself with the specifics in your county.
  2. Appeal Hearing: During the hearing, you'll present your case, including any supporting evidence you've gathered. The BOE will then review your appeal.
  3. Appeal Decision: If your appeal is successful, your property's assessed value will be adjusted. If your appeal is denied, you have the right to further appeal to the State Board of Assessment Appeals or to the district court within your county.

Paramount Property Tax Appeal Services

At Paramount Property Tax Appeal, we understand that the tax appeal process can be complex and daunting. With the stakes being high, it's crucial to have expert assistance on your side. That's why we're here to help.



A. Expert Assistance: Our team comprises of experienced professionals with deep expertise in property valuation and the Colorado property tax system. We know what it takes to build a successful appeal case. From assessing your property's valuation to collecting supporting evidence and navigating the appeal process, we provide comprehensive services designed to ease your burden and maximize your chances of success.

B. Contingency Basis Services: We believe in our ability to help our clients, and this is reflected in our pricing model. We work on a contingency basis, meaning our fees are directly tied to your success. If we're able to reduce your property taxes, we earn a percentage of the savings. If not, you owe us nothing. Our primary goal is to ensure you only pay your fair share in property taxes, and we're willing to put our money where our mouth is.

C. Dedication and Persistence: Our team is dedicated to representing your interests. If the initial appeal is unsuccessful, we're prepared to take your case to higher levels of appeal. We're persistent, thorough, and committed to fighting for our clients.

D. Experience: With years of experience in property tax appeals, we've developed a keen understanding of valuation practices and the nuances of local and state property tax laws. This knowledge equips us to advocate effectively for our clients and achieve successful outcomes.




Navigating the world of property taxes can be a complex endeavor, especially when it comes to ensuring that your commercial property is fairly assessed. The importance of understanding the property tax assessment process in Colorado and recognizing the grounds for appealing an assessment cannot be understated.

As a commercial real estate investor, it's crucial to scrutinize your property tax assessments. Overvaluations and other inaccuracies can lead to an unnecessary financial burden, chipping away at your profit margin. Challenging such assessments is not only your right but also a potential means of substantial savings.

Colorado's property tax system, while structured to be fair and accurate, is not infallible. It's crucial to remain vigilant and informed, ready to appeal any discrepancies you discover.

Remember, professional assistance can be a significant asset in this process. Lawyers, tax advisors, and other professionals can provide expert guidance, helping you to effectively navigate the complexities of the appeal process and maximize your chances of success.

In conclusion, the words of Benjamin Franklin ring as true today as they did over two centuries ago: "In this world, nothing can be said to be certain, except death and taxes." However, with a deep understanding of the property tax system and a keen eye for detail, you can ensure that your commercial property taxes are as fair and accurate as possible.

Frequently Asked Questions

Q1: How often are property assessments conducted in Colorado?

A1: Property assessments in Colorado are typically conducted every two years (Every odd year). However, the assessed value of your property can change in the interim due to factors such as renovations, zoning changes, or other alterations.

Q2: How do I find out the assessed value of my property?

A2: You can find out the assessed value of your property by referring to the Notice of Determination that you receive from your county assessor's office. This document will detail the assessed value of your property.

Q3: Can I appeal my property tax assessment myself, or do I need a lawyer?

A3: You are certainly able to file a property tax appeal yourself. However, the process can be complex and time-consuming. Consulting with a property tax professional or lawyer can provide you with expert guidance, making the process smoother and potentially increasing your chances of a successful appeal.

Q4: What happens if my property tax appeal is denied?

A4: If your property tax appeal is denied by the county Board of Equalization, you have the right to further appeal to the State Board of Assessment Appeals or to the district court within your county.

Q5: How much can I save by appealing my property tax assessment?

A5: The potential savings from a successful property tax appeal can vary significantly depending on factors such as the extent of the overvaluation and the property's tax rate. However, a successful appeal can result in substantial savings in some cases.

Q6: What is the deadline for filing a property tax appeal in Colorado?

A6: In Colorado, the deadline for filing a property tax appeal is typically within 30 days of the date on the Notice of Determination from the county assessor's office. It's crucial to be aware of this deadline, as missing it can result in the loss of your right to appeal for that year.


We specialize in reducing your property tax expenses through appeals. Our services are free until we deliver a refund or tax savings – No Savings = No Fee. Committed to defending your rights, we take pride in the trust our clients place in us.

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