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Updated 2025 Tax Year

Broomfield County
Property Tax Guide

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

10 Official Sources
8 min read
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Quick Facts
Tax Rate
Varies by location due to overlapping special districts (school, fire, library, metro districts)
Exemptions
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Section 1

How Property Tax Works

Broomfield County, Colorado operates as a consolidated city and county, providing municipal and county services through a unified property tax system. Property taxes fund essential services including public safety, education, infrastructure maintenance, parks and recreation, and local government operations. The effective property tax rate varies significantly based on your specific location within Broomfield due to overlapping special taxing districts such as school districts, fire districts, library districts, and metropolitan districts.

For the 2025 through 2030 property tax years, the assessment rate for residential property in Broomfield County is 26.4% of actual value, with rates potentially adjusting to 25.9% or 26.4% for the 2031-2032 tax years depending on legislative changes. Your actual tax burden will depend on the combination of taxing districts that serve your specific property location, making it important to understand which districts apply to your address.

Section 2

What Makes Up Your Tax Bill

ComponentRate (per $1,000 AV)Description
General CountyVaries by districtBasic county services and operations
School DistrictVaries by districtLocal school district operations and bonds
Fire ProtectionVaries by districtFire and emergency medical services
Library DistrictVaries by districtPublic library services
Park & RecreationVaries by districtParks, recreation facilities, and programs
Special DistrictsVaries by districtWater, sewer, metropolitan districts

Note: These rates apply to the 2025 levy year and are based on 26.4% assessment ratio. Actual mill levies vary significantly by location within Broomfield County due to different combinations of special taxing districts. Contact the Broomfield Assessor's Office at (303) 464-5819 for your specific property's tax rate calculation.

Section 3

When Are Property Taxes Due?

For the 2025/2026 tax year in Broomfield 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 are additional property tax assessments that occur when there are changes to property ownership, improvements, or new construction after the January 1st assessment date. These taxes are calculated based on the difference between the previous assessed value and the new assessed value, prorated for the remaining months in the tax year.

Common triggers for supplemental taxes include: completing new construction or major renovations, subdividing property, or removing exemptions that previously applied to the property. For example, if you complete a $100,000 home addition in June, you would receive a supplemental tax bill for the increased assessed value (approximately $26,400 at the 26.4% assessment rate) multiplied by your area's mill levy, prorated for July through December.

Example Calculation

Example 1: $300,000 Home

  • Market Value: $300,000
  • Assessed Value (26.4%): $79,200
  • Less: Senior Property Tax Credit (if applicable): $0
  • Net Taxable Value: $79,200
  • Annual Tax (assuming 75 mills): $5,940
  • Monthly Escrow: $495

Example 2: $600,000 Home

  • Market Value: $600,000
  • Assessed Value (26.4%): $158,400
  • Less: Senior Property Tax Credit (if applicable): $0
  • Net Taxable Value: $158,400
  • Annual Tax (assuming 75 mills): $11,880
  • Monthly Escrow: $990

Example 3: $1,000,000 Home

  • Market Value: $1,000,000
  • Assessed Value (26.4%): $264,000
  • Less: Senior Property Tax Credit (if applicable): $0
  • Net Taxable Value: $264,000
  • Annual Tax (assuming 75 mills): $19,800
  • Monthly Escrow: $1,650

Note: Tax credits require application and approval. Mill rates vary by specific location and taxing districts.

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Section 5

Escrow & Property Taxes

Most mortgage lenders require property tax escrow accounts to ensure timely payment of property taxes. Your lender will estimate your annual property tax based on the previous year's assessment and collect 1/12 of that amount with your monthly mortgage payment. The lender pays your property taxes directly to Broomfield County when they become due.

Property taxes in Broomfield County are due January 1st each year, with payment deadlines of February 28th for the first half and June 15th for the second half, or April 30th if paying in full. Your lender will typically pay the first half by the February deadline and the second half by the June deadline. You should receive an annual escrow analysis from your lender showing how your payments are calculated and any adjustments needed for the following year.

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Section 6

Frequently Asked Questions

Q: When are property taxes due in Broomfield County for 2025? A: Property taxes are due January 1st but may be paid without interest by February 28th (first half), June 15th (second half), or April 30th (full payment).

Q: What tax credits are available and do they require application? A: Senior Property Tax Exemption and Disabled Veteran Property Tax Exemption are available. Both require application by July 15th annually and are not automatic.

Q: How does the Senior Property Tax Exemption work? A: This is a tax credit that reduces your actual tax bill, not your assessed value. It requires annual application by July 15th to the Assessor's Office and has income and other eligibility requirements.

Q: When are properties reassessed? A: Colorado conducts property reassessments every two years. Contact the Broomfield Assessor's Office at (303) 464-5819 for the current assessment cycle.

Q: How do I appeal my property assessment? A: Appeals must be filed by July 15th following the assessment. Contact the Broomfield Assessor's Office for specific appeal procedures and deadlines.

Q: What are the penalties for late payment? A: Interest and penalties accrue on unpaid taxes after the due dates. Contact Broomfield County Treasurer for current penalty rates.

Q: Can I pay property taxes online? A: Contact the City and County of Broomfield Community Assistance Center for available online payment options and procedures.

Q: Why do tax rates vary within Broomfield County? A: Different areas are served by different combinations of special taxing districts (fire, library, metropolitan districts), which results in varying total mill levies depending on your specific property location.

Verified Sources

Backed by 10 Official Government Sources

Every fact in this guide is sourced from official county, state, and federal documents.

01
INTRODUCED - Colorado General Assemblyleg.colorado.gov
02
Tax Doc
Understanding Property Taxes in Colorado 2026douglas.co.us
03
Final Fiscal Noteleg.colorado.gov
04
Frequently Asked Questions - CivicPlus.CMS.FAQci.broomfield.co.us
05
County
Treasurer | City and County of Broomfield - Official Websiteci.broomfield.co.us
06
County
Assessor | City and County of Broomfield - Official Websiteci.broomfield.co.us
07
Tax Doc
Understanding Property Taxes in Coloradocostillacounty.gov
08
REVISED - Colorado General Assemblyleg.colorado.gov
09
PREAMENDED - Colorado.govleg.colorado.gov
10
INTRODUCED - Colorado.govcontent.leg.colorado.gov
All sources verified as of 2025 Tax Year

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