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Updated 2025 Tax Year

Dolores County
Property Tax Guide

Everything you need to know about property taxes in Dolores County, CO. Rates, due dates, exemptions, and how it affects your monthly payment.

9 Official Sources
8 min read
Quick Facts
Tax Rate
Varies significantly by location due to multiple overlapping special taxing districts
Exemptions
3+ Available
Section 1

How Property Tax Works

Dolores County, Colorado operates under the state's property tax system, where property taxes serve as the primary funding mechanism for essential local services including schools, fire protection, road maintenance, and county operations. The county follows Colorado's assessment methodology, with residential properties assessed at a rate that has been recently modified due to state legislation, creating different assessment rates for school district levies versus other local government levies beginning in 2025.

Property tax rates in Dolores County vary significantly by location within the county due to multiple overlapping special taxing districts, including school districts, fire protection districts, water districts, and other special service areas. The effective tax rate typically ranges from approximately 0.8% to 1.2% of market value, though this can vary based on your specific property location and the combination of districts serving your area. All property owners should verify their specific tax districts and applicable rates, as these directly impact your annual tax obligation.

Section 2

What Makes Up Your Tax Bill

ComponentRate (mills)Description
County General~8-12 millsBasic county services, roads, administration
School District~25-35 millsEducational services and facilities
Fire Protection District~5-8 millsFire and emergency services (varies by district)
Regional Transportation~2-4 millsRoad and transportation improvements
Library District~1-2 millsPublic library services
Cemetery District~0.5-1 millCemetery maintenance and operations
Water/Sanitation~2-5 millsWater and sewer services (where applicable)

Note: These rates apply to the 2024-2025 levy year and are approximate ranges. Actual rates vary by specific location within Dolores County based on which special districts serve your property. Beginning in 2025, residential properties will have different assessed values for school district levies (higher rate) versus other local government levies (6.4% assessment rate). Contact the Dolores County Assessor for your exact mill levy combination.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Dolores County, property taxes are due in two installments:

Pro tip: If you pay through mortgage escrow, your lender splits these payments across your monthly mortgage. If you pay directly, set calendar reminders to avoid late penalties.
Section 4

Supplemental Tax Bills

Supplemental taxes in Dolores County are triggered when there are significant changes to a property during the tax year, primarily new construction, major improvements, or ownership changes that affect the property's assessed value. These taxes are calculated based on the increased assessed value multiplied by the applicable mill levy rate, prorated for the portion of the tax year the improvement was in place.

For example, if you complete a $100,000 home addition in July, and your total mill levy rate is 50 mills, the supplemental tax would be calculated on the increased assessed value (at the applicable assessment rate) for the remaining months of the tax year. With the new residential assessment structure, this calculation may differ depending on which taxing districts are affected by the improvement.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (non-school): $300,000 × 6.4% = $19,200
  • Assessed Value (school): $300,000 × ~7.15% = $21,450
  • Less: Senior Homestead Credit (if applicable): -$1,500
  • Annual Tax: ~$2,100-2,800
  • Monthly (if escrowed): ~$175-235

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (non-school): $600,000 × 6.4% = $38,400
  • Assessed Value (school): $600,000 × ~7.15% = $42,900
  • Less: Homestead Credit (if applicable): -$1,500
  • Annual Tax: ~$4,200-5,600
  • Monthly (if escrowed): ~$350-465

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (non-school): $1,000,000 × 6.4% = $64,000
  • Assessed Value (school): $1,000,000 × ~7.15% = $71,500
  • Annual Tax: ~$7,000-9,500
  • Monthly (if escrowed): ~$585-790

Note: Tax credits require annual application and are not automatically applied. Examples assume typical mill levy combinations but actual taxes depend on specific district combinations for your property location.

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Section 5

Escrow & Property Taxes

Most mortgage lenders in Dolores County require property tax escrow accounts, where monthly payments are collected along with your mortgage payment and held until tax payments are due. Lenders typically collect 1/12th of your estimated annual property tax bill each month, plus a cushion amount as allowed by federal regulations.

Property tax bills in Dolores County are typically issued in late December or early January for the previous tax year, with payment due dates varying by the county's collection schedule. When your lender receives the tax bill, they pay it from your escrow account and provide you with documentation of the payment. It's important to review your annual escrow analysis to ensure adequate funds are being collected, especially given recent changes to assessment rates that may affect your tax bill. If you pay taxes directly rather than through escrow, you're responsible for ensuring timely payment to avoid penalties and interest charges.

How HonestCasa Helps
  • Understand whether your escrow is set correctly
  • See how rising taxes will change your monthly payment
  • Plan ahead instead of being surprised by "shortage" letters
Section 6

Frequently Asked Questions

Q: When are property taxes due in Dolores County? A: Property tax payment schedules vary by county determination. Contact the Dolores County Treasurer for specific due dates for the current fiscal year, as Colorado allows counties to set their own payment schedules.

Q: What tax credits are available and do they require application? A: Available tax credits include the Senior Property Tax Exemption, Homestead Credit, and Veteran Disability Credits. All credits require annual application and are not automatic - you must apply through the Dolores County Assessor's office before the deadline.

Q: How does the Homestead Credit work? A: The Homestead Credit caps the annual increase in your home's assessed value for tax purposes, typically limiting increases to 10% per year rather than reducing the market value itself. This credit requires filing an application and only applies to your primary residence.

Q: When are properties assessed and how do I appeal? A: Properties are assessed annually with values determined as of January 1st. Assessment notices are typically mailed in early May, and you have 30 days from the notice date to file an appeal with the Dolores County Assessor if you believe your assessment is incorrect.

Q: What are the penalties for late payment? A: Late payments incur interest and penalties as set by Colorado state law. After the due date, interest accrues monthly, and properties may eventually be subject to tax lien sales if taxes remain unpaid for multiple years.

Q: Can I pay my property taxes online? A: Contact the Dolores County Treasurer's office to determine available online payment options and accepted payment methods for property taxes.

Q: How do special district taxes affect my bill? A: Your property may be located in multiple special districts (fire, water, library, etc.), each with their own mill levy. The combination of all applicable districts determines your total tax rate, which is why rates vary significantly by location within the county.

Q: What's the difference between the new school and non-school assessment rates? A: Beginning in 2025, residential properties have two assessed values: one at 6.4% for local government levies and another higher rate for school district levies. This change was implemented by the state legislature to address property tax concerns while maintaining school funding.

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