Grand County Property Tax Appeal, Colorado

Travis Bunn·Updated July 22, 2026

Grand County is a scenic mountain county in north-central Colorado with Hot Sulphur Springs as the county seat and Granby as the largest town. With a population of approximately 16,520, the county includes popular communities such as Winter Park, Fraser, Grand Lake, and Kremmling. Property tax appeals are particularly important here because while Grand County's effective tax rate of 0.41% is significantly lower than the national median of 1.02%, the median annual tax bill of $2,705 exceeds the national median of $2,400 due to elevated home values. The county's median home value ranges between $477,000 and $601,500 depending on the data source, well above both state and national averages, making accurate assessments critical for homeowners facing substantial property tax bills.

Notable cities: Hot Sulphur Springs, Granby, Winter Park, Fraser, Grand Lake, Kremmling, Tabernash

Median Home

$477,150

Tax Rate

0.41%

Annual Tax

$2,705

Population

16,520

On the typical Grand County home, valued near $477,150 at the county’s effective tax rate of 0.41%, an over-assessment of even 10% means you are overpaying year after year until you appeal it. Here is how to find out if yours qualifies.

2026 Appeal Deadline: June 8, 2026

Real property appeals must be filed with the Grand County Assessor between May 4 and June 8, 2026. The appeal window opens when Notice of Valuations are mailed on May 1 (in reappraisal years like 2025). If your appeal falls on a weekend or legal holiday, it is deemed timely if filed the next business day.

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Colorado homes beneath snow-covered mountains. Grand County appeal guide.

How Grand County Assesses Property

6.25%of market value

Assessed by: Grand County Assessor's Office

Assessment cycle: biennial

Notices typically mailed: May 1 (odd-numbered years)

In Colorado, your property's market value and assessed value are different amounts. Colorado applies a 6.25% assessment ratio to residential properties for local government taxes (6.8% after a 10% reduction on the first $700,000 of value). For example, if your home's market value is $477,000 in Grand County, at the 6.25% assessment ratio your assessed value would be $29,813, resulting in approximately $1,955 in annual taxes at the county's effective rate of 0.41%. This assessment system ensures property taxes are based on a fraction of actual market value.

The Appeal Process

Appeals are heard by the County Board of Equalization. Grand County Board of Equalization hearings are conducted by appointed, qualified referees and take place both virtually via Zoom and in person starting the week of July 7. You'll present your evidence including comparable sales, photos, and documentation while the Assessor defends their valuation, with decisions mailed by August 5.

Step 1: Review your Notice of Valuation mailed May 1, 2026, and verify your property details using the Grand County Assessor's online property search and COMPER sales comparison tool to check for errors in square footage, features, or condition.

Step 2: Gather supporting evidence including comparable home sales from July 1, 2022 to June 30, 2024 (the study period for 2025/2026 valuations), photographs of property condition issues, recent appraisals, and documentation of any unique factors affecting value.

Step 3: File your appeal online at appeals.spatialest.com/co-grand or submit a written protest by mail, email, or in person to the Grand County Assessor's Office between May 4 and June 8, 2026, clearly stating why you believe your valuation is incorrect.

Step 4: The Assessor will review your appeal and mail a Notice of Determination to you by June 30, 2026, either agreeing with your position and adjusting the value, or explaining why the original valuation stands.

Step 5: If you disagree with the Assessor's determination or don't receive a response by June 30, file a written appeal with the County Board of Equalization (CBOE) on or before July 15, 2026, and attend a hearing before appointed referees starting the week of July 7.

Step 6: The Board of Equalization will issue a decision by August 5, 2026. If still unsatisfied, you may appeal to the Colorado Board of Assessment Appeals within 30 days, pursue binding arbitration, or file in District Court.

Step 7: For state-level appeals beyond the CBOE, contact the Colorado Board of Assessment Appeals or consult the Grand County District Court at 307 Moffat Ave., PO Box 192, Hot Sulphur Springs, CO 80451 (970-725-3357).

Required form: Online protest form or written appeal letter

Filing Methods

online:https://appeals.spatialest.com/co-grand (available May 4 - June 8, 2026)

mail:P.O. Box 302, Hot Sulphur Springs, CO 80451

email:Email written appeal to the Assessor's office

in-person:308 Byers Avenue, Hot Sulphur Springs, CO 80451 (Monday-Friday 8:30 a.m.)

Evidence to Bring

Comparable sales from July 1, 2022 to June 30, 2024Photographs of property condition or defectsRecent independent appraisalDocumentation of property characteristics errorsRepair estimates for needed workMarket analysis from real estate professionals

Grand County Assessor Contact

Grand County Assessor's Office

Phone: (970) 725-3060

Address: 308 Byers Avenue, P.O. Box 302, Hot Sulphur Springs, CO 80451

Website: https://www.co.grand.co.us/133/Assessors-Office

Online Portal: https://appeals.spatialest.com/co-grand

Hours: Monday - Friday 8:30 a.m.

Tax Exemptions in Grand County

General Homestead Exemption

10% of home value, maximum $70,000 reduction (on homes up to $700,000)

Colorado's SB24-233 provides all homeowners a homestead exemption equal to 10% of home value up to $700,000, reducing taxes paid to city, county, fire districts, and special districts.

Eligibility: All residential property owners, including second and third homesDeadline: Automatically applied, no application needed

Senior Property Tax Exemption

50% of first $200,000 of actual value exempt

Constitutional exemption for qualifying seniors providing significant property tax relief by exempting 50% of the first $200,000 of actual property value.

Eligibility: Age 65+ on January 1, owned and occupied property as primary residence for at least 10 consecutive years. Disabled veterans (100% service-connected) qualify without the 10-year requirement.Deadline: July 15, 2026

Disabled Veteran Exemption

50% of first $200,000 of actual value exempt

Property tax exemption for veterans with 100% service-connected disability, providing the same benefit as the senior exemption without residency duration requirements.

Eligibility: Veterans with 100% service-connected disability rating from the VADeadline: July 15, 2026

Surviving Spouse Exemption

50% of first $200,000 of actual value exempt

Allows surviving spouses of seniors or disabled veterans who previously qualified to continue receiving the property tax exemption.

Eligibility: Surviving spouse of a qualifying senior or disabled veteran who previously received the exemptionDeadline: July 15, 2026

Grand County Appeal Statistics

Avg Reduction

$650

Grand County Appeal Packet — $49

Comparable sales evidence, county-specific filing guide, and professional cover letter. Enter your address to get started.

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Frequently Asked Questions

What is the deadline to appeal my property taxes in Grand County for 2026?

The deadline to appeal your property valuation to the Grand County Assessor is June 8, 2026, with the appeal window opening May 4, 2026. You must file your initial appeal during this 35-day period. If you disagree with the Assessor's determination (mailed by June 30), you have until July 15, 2026 to appeal to the County Board of Equalization. Missing these deadlines means you cannot challenge your 2026 assessment and must wait until the next reappraisal cycle in 2027.

How do I file a property tax appeal online in Grand County?

Grand County offers online appeal filing through their citizen portal at appeals.spatialest.com/co-grand, which becomes accessible during the protest period from May 4 through June 8, 2026. To file online, you'll need your property information, evidence supporting your claim (comparable sales, photos, appraisal), and a clear explanation of why your valuation is incorrect. The online system guides you through submitting your protest form and uploading supporting documents. Alternatively, you can mail, email, or hand-deliver a written appeal to the Assessor's Office at P.O. Box 302, Hot Sulphur Springs, CO 80451.

What is the homestead exemption worth in Grand County Colorado?

Grand County homeowners receive Colorado's general homestead exemption worth 10% of their home value up to $700,000 (maximum $70,000 reduction), which applies automatically without application. For a home valued at Grand County's median of $477,000, this provides approximately a $47,700 reduction in assessed value. Qualifying seniors age 65+ who have owned and occupied their home for 10+ years can receive an additional senior exemption of 50% of the first $200,000 of actual value, potentially worth up to $100,000 in exempted value. The senior exemption requires a one-time application by July 15 using form 15DPT-AR submitted to the Grand County Assessor's Office.

What happens at a Board of Equalization hearing in Grand County?

Grand County Board of Equalization hearings are conducted by appointed, qualified referees rather than the County Commissioners themselves. Hearings begin the week of July 7 and are offered both virtually via Zoom and in person at the county offices. During your hearing, you'll present your evidence explaining why your property valuation should be reduced, including comparable sales from the July 2022 to June 2024 study period, photos, and appraisals. The Assessor's Office will defend their original valuation. The referee evaluates both sides and issues a decision, which the Board mails to you by August 5, 2026.

How much can I save by appealing my property taxes in Grand County?

Based on available data, successful property tax appeals in Grand County result in average savings of $650 per year. However, your potential savings depend on how much your property is overassessed and the county's effective tax rate of 0.41%. For example, if you successfully reduce your home's assessed value by $50,000, you would save approximately $205 annually. Over the two-year assessment cycle (2025-2026), that's $410 in total savings. Properties with larger overassessments can save significantly more, and these savings continue for two years until the next reappraisal in 2027.

What evidence do I need for a Grand County property tax appeal?

The strongest evidence for a Grand County appeal includes comparable sales of similar properties from the July 1, 2022 to June 30, 2024 study period, which you can research using the COMPER Property Search Tool on the Assessor's website. You should also provide photographs documenting any property condition issues, defects, or needed repairs that affect value. Other helpful evidence includes a recent independent appraisal, documentation of errors in your property record card (incorrect square footage, features, or classification), repair estimates from licensed contractors, and market analysis from local real estate professionals. The Assessor cannot consider market data after June 30, 2024, so focus your evidence on that specific timeframe.

Does Grand County reassess property values every year?

No, Grand County follows Colorado's biennial reassessment cycle, revaluing all properties every odd-numbered year. The most recent reappraisal occurred in 2025, establishing values for both tax years 2025 and 2026 based on sales data from July 1, 2022 through June 30, 2024. This means your 2026 property value remains the same as 2025 unless you made physical changes to your property (additions, improvements, demolition). The next countywide reappraisal will occur in 2027 for tax years 2027 and 2028. Property owners only receive Notice of Valuation on May 1 during reappraisal years, though you still have appeal rights annually.

Can I appeal to the Assessor and the Board of Equalization in the same year in Grand County?

Yes, Grand County's appeal process is specifically structured as a two-level system within the county. You must first appeal to the Assessor between May 4 and June 8, 2026. The Assessor reviews your evidence and mails a Notice of Determination by June 30. If you disagree with the Assessor's decision or don't receive a response, you then have the right to appeal to the County Board of Equalization by July 15, 2026. This two-step process gives you two opportunities to present your case and potentially reduce your assessment. After the CBOE decision (issued by August 5), you can further appeal to the Colorado Board of Assessment Appeals, binding arbitration, or District Court.

Official Resources

Grand County Assessor's Office Official Website →

Official county assessor site with property information, appeal deadlines, COMPER sales tool, and assessment details.

Grand County Property Tax Appeal Online Portal →

Online filing portal for property valuation appeals, accessible May 4 - June 8 during the protest period.

Grand County Assessor Property Record Search →

Search and view your property record card, valuation history, characteristics, and comparable sales data.

Colorado Division of Property Taxation - Property Tax Exemptions →

State resource for exemption forms including senior, disabled veteran, and surviving spouse property tax exemptions.

For state-wide appeal information including Colorado's assessment ratio and deadlines, see our Colorado Property Tax Appeal Guide →

Considering professional help with your appeal? Compare pricing, coverage, and pros/cons in our Best Property Tax Appeal Services (2026) or browse side-by-side service comparisons →

More Colorado Counties

Adams County (Brighton)Arapahoe County (Littleton)Boulder County (Boulder)Denver County (Denver)Douglas County (Castle Rock)Eagle County (Eagle)

← All Colorado property tax appeal info

Sources: https://www.co.grand.co.us/133/Assessors-Office | https://www.co.grand.co.us/160/Forms | https://www.ownwell.com/trends/colorado/grand-county | https://www.tax-rates.org/colorado/grand_county_property_tax | https://propertytaxrates.org/exemptions/colorado/ | https://dpt.colorado.gov/residential-local-government-assessment-rate | https://worldpopulationreview.com/us-counties/colorado/grand-county

Last verified: 2026-07-22