Alamosa County Assessor


The County Assessor is responsible for valuing all real and personal property, including mobile homes, residential and commercial properties and agricultural land for property tax purposes.

The Assessor determines the equitable value of property to ensure that each taxpayer pays only his or her share of the taxes. Anyone who disagrees with changes in the actual value of real property can object or file a protest with the Assessor’s Office.


Ph. (719) 589-6365| F. (719) 589-6118
8999 Independence Way | Suite 105
Alamosa, Colorado 81101
Monday-Friday 8:00 a.m. - 4:30 p.m

Assessor Sandra Hostetter

Photo Credit: NPS/Patrick Myers


The county is open to the public with regular hours from 8:00 a.m. to 4:30 p.m.

          Real Property Taxpayer Remedies 

For tax years 2019 and 2020, the county assessor is required by law to appraise all real property at a June 30, 2018 level of value. Notices of Valuation reflecting the 2020 values will be sent to owners of real property by May 1. The information used by the assessor to value your property is available for your review. 

From May 1 through June 1, owners of real property may protest the value or the classification established by the assessor. This protest period provides an opportunity for the taxpayers to inform the assessor of errors in classification, property description, or other discrepancies that may result in a reduction in value or a change in classification.

Protests to the assessor must be postmarked or presented in person on or before June 1. The assessor must make a decision concerning your protest and mail you a written Notice of Determination on or before the last working day in June. If you are satisfied with the assessor’s determination, the tax bill you receive next January will be based on the value and classification reflected on the Notice of Determination.

If you disagree with the assessor’s decision, you may file an appeal with the county board of equalization. An appeal to the county board of equalization must be postmarked or hand-delivered no later than July 15. The county board will notify you by mail of the hearing date, time, and place where you may present evidence to substantiate your case. Evidence includes documentation such as the sales price of property similar to yours that sold between January 1, 2017 and June 30, 2018. The county board will conclude hearings and render decisions by the close of Business on August 5. The county board must mail you a decision within five business days of the date of its decision. If you are satisfied with the county board’s decision, the tax bill you receive next January will be based on the valuation and classification reflected in the county board’s decision.

If you disagree with the action of the county board, you may file an appeal with the State Board of Assessment Appeals or the district court, or you may request a binding arbitration hearing. Your appeal must be made within 30 days of the county board’s decision. For additional information regarding the protest and appeal process, contact your county assessor at (719) 589-6365.

Property Tax Exemptions for Senior Citizens

The Assessor's office has served over 800 senior citizens who have been approved to receive the “Senior Homestead Exemption”. The maintenance of this program is paramount to our office, and we will continue to administer the Senior Homestead Program.

For qualifying seniors, this exemption reduces the property tax on the primary residence by exempting 50% of the first $200,000 in market value. For example:

  • If your primary residence has a market value of $200,000, the first $100,000 will be exempt from taxation.
  • If your primary residence has a market value of $175,000, the first $87,500 will be exempt from taxation, etc.

If you have previously applied and been approved for participation in the Senior Exemption Program, you need take no further action. Your initial application is still in effect. The Assessor must be informed of any changes in ownership or occupancy of the property within 60-days of when the change occurs. IF ADDITIONAL INFORMATION IS NEEDED, WE WILL CONTACT YOU! 

        Eligibility for Exemption

You must be at least 65 years of age as of January 1 of the year of application,

        Address for Submittal

Alamosa County Assessor
8999 Independence Way, Suite 105
Alamosa, Colorado 81101







Good News for Senior Citizens

Property Tax Exemptions for Disabled Veterans

The Disabled Veteran exemption is available if:

  1. The veteran sustained a service-connected disability while serving on active duty in the Armed Forces of the United States. This includes members of the National Guard and Reserves who sustained their injury during a period in which they were called to active duty.
  2. The veteran was honorably discharged.
  3. The federal Department of Veterans Affairs has rated the veteran's service-connected disability as a one hundred percent permanent disability through disability retirement benefits pursuant to a law or regulation administered by the department, the U.S. Department of Homeland Security, or the Department of the Army, Navy, or Air Force.
  • VA unemployability awards do not meet the requirement for determining an applicant’s eligibility.
  • The applicant must have owned and occupied the home as his or her primary residence since January 1 of the year of application,
  • Limited exceptions to the ownership and occupancy requirements are detailed in the eligibility requirements section of the application.
  • The application deadline is July 1.
  • For questions call (303) 343-1268 
        Download Application

Disabled Veteran Property Tax Exemption Application

        Address for Submittal

Colorado Department of Military and Veterans Affairs
Division of Veterans Affairs
1355 S. Colorado Blvd., Bldg C, Suite 113
Denver, Colorado 80222 




Line of Soldiers Walking

Frequently Asked Questions

Pursuant to Colorado State Statute C.R.S. Article 3, Title 39, all taxable and exempt property is valued by the county assessor valuation criteria as stipulated by statute and by using manuals, appraisal procedures, and instructions issued by the Property Tax Administrator.

  • The total value as determined by the County Assessor is certified to the county entities and the state.
  • Each entity certifies a mill levy to the Assessor and then it is the duty of the Assessor to extend the tax on all property assessed and direct the County Treasurer to collect the taxes.

All property, real and personal, located in the State of Colorado on the assessment date, January 1, is taxable unless expressly exempted by the Constitution or state statutes. Article X, Section 3, Colorado Constitution, and 39-1-102 (16), C.R.S.

  • Most property in Colorado is valued using the three approaches to value:
    • The market approach, the cost approach, and the income approach.
  • The exceptions to the three approaches include residential real property (market only), agricultural land, and natural resource land (special valuation procedures based on productivity and production).
  • The market, cost, and income data that county assessors use to apply the appropriate approaches to value is collected during specific periods prescribed by statute and represent a certain ''level of value''.
  • Property taxes are not calculated on the ''full actual value'' as determined by the assessor. Instead, an assessment percentage is applied according to the classification of the property. 39-1-104(1) and (1.5), C.R.S.
  • Residential property is assessed at a percentage of the actual value; currently, this percentage is 7.96% while most other property is assessed at 29%.

A property owner must be sent a notice of valuation (NOV) every year.

  • This notice must be mailed no later than May 1.
  • In the language of the notice is stated the actual value that the assessor has assigned to your property.
  • This notice of valuation is not a tax bill.
  • The purpose of this notice is to inform you of any change in your property valuation and advises you of your right to appeal the value.

If a taxpayer disagrees with the value assigned by the assessor, the taxpayer may file a protest during the statutory protest period.

  • Real property protests must be postmarked no later than June 1, or a taxpayer may appear in person to protest no later than June 1. 39-5-121(1), C.R.S.
  • Personal property protests must be postmarked no later than June 30, or a taxpayer may appear in person to protest no later than July 5. 39-5-121(1.5), C.R.S.
  • A protest form is included with the notice of valuation: however it is not mandatory for the taxpayer to use this form, or any other particular form, when protesting.

All personal inquiries and letters/faxes received during the protest period are processed and reviewed.

  • The assessor's staff corrects any erroneous or improper valuations.
  • If the assessor determines that the value is correct, no adjustments will be applied.
  • In each determination, the assessor includes the reason(s) for denial and information regarding the taxpayer's right of appeal to the county Board of Equalization.

NO! Colorado statutes require that the sitting assessor hear protest on valuation that has been assigned by the assessor.

    The assessor does not assign taxes.
    Taxes include a number of components that are beyond the assessor's control, such as mill levy and assessment rate.
        The assessment rate is set by the State Legislature and mill levies are determined by each governing entity such as schools, city or county, fire department, etc.
    The end results of these components determine the amount of taxes levied. The following is an example of how taxes are determined.

Property Type: Residential Non-Residential
Assigned by Assessor: $100,000   $100,000
State Statutes: x    .0796 x        .29
Assessed Value: $7,960 $29,000
Mill Levy assigned by an entity: x.074201 x .074201
Taxes Due: $590.64 $2,151.83

Agricultural land valuation is directed by Section 3(1)(a), article X of the Colorado Constitution and are calculated on the earning capacity of the land, using a ten year average of commodity prices, locally researched expenses and factors supplied by the Division of Property Taxation. Each of the Assessor’s offices are audited to verify that their calculations fall within the guidelines prescribed by the Colorado Constitution.