2027 Property Tax Due Dates
County-specific02-28
First half due by last day of February
Delinquent after: 11-01
06-15
Second half due by June 15
04-30
Full payment due by April 30
Payment Methods
Online, Mail, In-Person
Adams County Treasurer
Treasurer
Alex Villagran
Phone
(720) 523-6160Mailing Address
P.O. Box 869
Brighton, CO 80601
Office Hours
How to Pay
Online
true
By Mail
true — P.O. Box 869, Brighton CO 80601
In Person
true — 4430 S. Adams County Parkway, Suite W1000, Brighton CO 80601, Mon-Fri 8am - 4:30pm
About Property Taxes in Colorado
Colorado property taxes are administered at the county level. Property is assessed at its actual value (market value) as determined by the county assessor. Colorado conducts countywide reassessments every two years (odd years), meaning values are updated on a two-year cycle. Colorado has recently enacted significant property tax relief legislation to address rapid home value appreciation. The residential assessment rate — the percentage of market value that is taxable — has been reduced and is subject to legislative adjustment. Always confirm the current assessment rate with your county assessor, as it may change year to year.
Payment & Assessment
Colorado property taxes for the prior year are due in the current year. You have two options: Option 1 (single payment): Pay the full amount by April 30. Option 2 (two installments): Pay the first half by February 28, and the second half by June 15. A penalty of 1% per month applies to late payments. Taxes remaining unpaid for several years can result in a tax lien sale. Most Colorado counties offer online payment through the county treasurer's website. Payment by mail and in person is also available.
Statewide framework for Colorado. Your county's specific rates and deadlines are shown above.
Other Counties in Colorado
About Adams County
Adams County is a county located in the U.S. state of Colorado. As of the 2020 United States census, the population was 519,572. The county seat is Brighton, and the largest city is Thornton. The county is named for Alva Adams, an early Governor of the State of Colorado in 1887–1889. Adams County is part of the Denver metropolitan area.
Source: Wikipedia — content available under CC BY-SA 4.0
Related Resources
Interested in Tax Sale Investing?
Many properties end up at auction when owners fall behind on taxes. These books cover how it works.
As an Amazon Associate, we earn from qualifying purchases.
Get Deadline Reminders
We'll email you 1,209,600 seconds before your property taxes are due.
Due dates shown are for reference only. Contact your county treasurer's office to confirm official deadlines before making payments.