Tax Lien Sale

2025 Sale Dates

Real Property Tax Lien Sale

Our tax lien sale will be held November 14, 2025

Mobile Home Tax Lien Sale

Our tax lien sale is announced for December 5, 2025

As permitted under CRS 39-10-111.5, delinquent mobile home taxes will be struck off to the county rather than being offered for sale at auction.

Tax Lien Sale Information

For questions about parking, what information you’ll need to provide during registration, or anything else, please see our list of frequently asked questions.

Tax Lien Interest Rate

The 2024 interest rate is 15% per annum.

Prior Year Sale Information
Category	11/20/2020	11/5/2021	11/16/2022	11/17/2023	11/8/2024
Interest	9%	9%	12%	15%	15%
Investors at sale	37	42	37	32	29
Properties at auction	522	402	446	488	591
Premium Average	5.2%	7.5%	7.6%	7%	6.0%
Taxes collected	$2,741,829.48	$2,918,713.39	$2,470,112.64	$2,329,830.56	$3,800,832.11

Contact Us

Treasurer's Office

Phone: 303-441-3520
Fax: 303-441-3598

treasurer@bouldercounty.gov

eforeclosures@bouldercounty.gov

Mailing Address

PO Box 471
Boulder, CO 80306

Boulder

1325 Pearl St.
1st Floor
Hours: 8 a.m. to 4:30 p.m.
Monday - Friday

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Longmont

515 Coffman St.
Suite 113
Hours: 8 a.m. to 4:30 p.m.
Mondays only

Lafayette

1755 S. Public Road

Hours: 8 a.m. to 4:30 p.m.
Tuesdays Only
Open through Aug 26, 2025