Property tax in Broomfield, Colorado is calculated by taking your home’s actual value, reducing it through Colorado’s residential assessment rates (6.8% for local government and 7.05% for schools in tax year 2026), and multiplying each portion by the mill levies of every taxing authority that covers your address.1Colorado Division of Property Taxation. Understanding Property Taxes in Colorado You can pay in two installments (end of February and June 15) or in one lump sum by April 30. Because Broomfield is Colorado’s only consolidated city and county, the same office handles assessment, collection, and appeals.
How Your Broomfield Tax Bill Is Calculated
The assessor sets an “actual value” for your home based on what a knowledgeable buyer would pay a willing seller. Colorado runs a two-year reassessment cycle with an appraisal date of June 30 in even-numbered years, so the values used for 2025 and 2026 came from sales data ending in mid-2024.2Colorado Board of Assessment Appeals. Property Tax Terminology Physical characteristics drive the number: lot size, square footage, condition, age, and location. What’s inside your house doesn’t.
Actual value is not what you pay tax on. Colorado applies two different residential assessment rates to the same home, one for the school-district share of your bill and a lower one for everything else. For tax year 2026:
- School districts: 7.05% of actual value
- All other local governments (Broomfield itself, fire, water, metro districts): 6.8%, applied after subtracting the lesser of 10% of actual value or $70,0003Colorado General Assembly. SB24-233 Property Tax
Here is how that works on a home with an actual value of $500,000:
- School assessed value: $500,000 × 7.05% = $35,250
- Local government assessed value: $500,000 − $50,000 = $450,000, then × 6.8% = $30,600
Each piece is then multiplied by the mill levy for the matching taxing authorities. A mill equals one dollar per $1,000 of assessed value. Broomfield’s own city and county levy has held at 28.969 mills since 2001.4City and County of Broomfield. Property Tax 101 Your total will be higher once your school district (Boulder Valley or Adams 12, depending on your address) and any special districts covering your parcel are added in. Two homes a mile apart can carry noticeably different total mill levies because of those special districts. To see the exact districts that apply to your property, use the assessor’s property records search.5City and County of Broomfield. Property Search Links
Skip the split-rate step and multiply your market value straight by the total mill rate, and you’ll get a number that isn’t close to right.
When Property Taxes Are Due
Broomfield gives you two ways to pay the annual bill:6City and County of Broomfield. Treasurer
- Two equal installments: first half by the last day of February, second half by June 15
- One full payment by April 30
Miss any of those and interest accrues at 1% per month on the unpaid balance. First-half interest starts March 1, second-half interest starts June 16, and a missed full payment accrues from May 1.7FindLaw. Colorado Revised Statutes Title 39 Taxation 39-10-104.5 Partial months count as full months, so a payment one day late still triggers a full month of interest.
How to Pay
The Broomfield Treasurer’s payment portal at egov.broomfield.org accepts eChecks for a flat $2.50 fee and credit cards for a 2.50% fee.8City and County of Broomfield Treasurer. City and County of Broomfield Treasurer Web On a $4,000 bill, that credit-card charge adds $100, so eCheck or a mailed check is cheaper.
To mail a payment, send your check with the payment coupon to the Broomfield County Treasurer’s Office at One Des Combes Drive, Broomfield, CO 80020. In-person payments are accepted at the George Di Ciero City and County Building. If you need your account number, look it up by parcel ID or street address through Broomfield’s tax inquiry page.9City and County of Broomfield. Parcel, Floodplain and Tax Inquiry
Exemptions That Can Cut Your Bill
Two exemptions each remove 50% of the first $200,000 of a home’s actual value from taxation. Depending on your mill levy, that’s worth several hundred dollars a year.
Senior Homestead Exemption
You qualify if you turned 65 on or before January 1 of the application year and have owned and occupied the home as your primary residence for at least 10 consecutive years before that date.10City and County of Broomfield. Property Tax Exemption and Deferral Programs For tax year 2026, you need to have been born on or before January 1, 1961, and owned and occupied the home continuously since January 1, 2016.11Colorado Division of Property Taxation. Senior Citizen and Veterans with a Disability Property Tax Exemption The application deadline is July 15. Forms are available from the Broomfield Assessor’s Office at 303-464-5819.
Colorado also created a “qualified senior primary residence” classification for seniors who received the exemption in 2020 or later but no longer meet the standard 10-year rule. The 50% reduction on the first $200,000 still applies through a separate application track.10City and County of Broomfield. Property Tax Exemption and Deferral Programs
Disabled Veterans and Gold Star Spouses
Veterans rated 100% permanently and totally disabled by the U.S. Department of Veterans Affairs get the same 50% reduction on the first $200,000.12Colorado Division of Property Taxation. Property Tax Exemption for Veterans with a Disability and Gold Star Spouses You must have been honorably discharged and must have owned and occupied the property as your primary residence since January 1 of the application year. Surviving spouses of veterans who previously held the exemption, and Gold Star spouses, are also eligible. The deadline is July 1.
Appealing Your Valuation
If you think the assessor overvalued your home, the deadline is short. Broomfield mails a Notice of Valuation by around May 1 in reassessment (odd-numbered) years. In even-numbered years, you only get a notice if the value changed for a reason like an improvement or a correction.13City and County of Broomfield. Property Valuation Process
File your protest online, by mail, or in person by June 8. Mailed protests must be postmarked by that date. The assessor then issues a Notice of Determination by June 30.
The best evidence is recent sales of comparable homes near yours that sold for less than the assessor’s number. Errors in your property record also work: an incorrect square footage, a finished basement that isn’t finished, and so on. Physical problems that hurt market value, like foundation damage, are worth documenting too. Bring paper for every claim.
If the assessor denies your protest, appeal to the Broomfield Board of Equalization. Independent hearing officers appointed by the City Council hear those appeals between July 21 and July 31, and the Council finalizes decisions by August 5. From there, you have 30 days to appeal further to the state Board of Assessment Appeals, district court, or binding arbitration.
What Happens If You Don’t Pay
The 1% monthly interest is only the first consequence. The county treasurer advertises delinquent properties and eventually sells tax liens at a public auction, usually in the fall. Whoever buys the lien pays your overdue taxes and earns interest at a rate set each year by adding 9% to the Federal Reserve discount rate.
You keep ownership during the three-year redemption period after a lien sale. To clear the title, you have to pay the full delinquent amount plus all accrued redemption interest. If you don’t redeem within three years, the lien holder can apply for a treasurer’s deed and take ownership. It is not common, but it does happen, and the process runs whether or not you are watching.
If You Pay Through a Mortgage Escrow
Most Broomfield homeowners with a mortgage never write a check to the treasurer directly. The lender collects an escrow amount inside your monthly payment and pays the tax bill when it comes due. Federal rules require your servicer to run an annual escrow analysis and send you a statement within 30 days of the end of each computation year.14Consumer Financial Protection Bureau. 1024.17 Escrow Accounts
That analysis is where a reassessment shows up in your budget. If taxes went up, the escrow account is short and your monthly payment rises to cover the gap. Servicers can spread a shortage over 12 months or accept a lump-sum catch-up. If taxes went down or the account collected too much, the servicer must refund any surplus of $50 or more, and cannot hold more than two months of cushion.
Read the annual statement carefully. Servicers sometimes miss deadlines, apply funds to the wrong parcel, or fail to reflect an exemption you were granted. The tax obligation is still yours, and catching an escrow mistake early is far easier than untangling one after interest has piled up.