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Boulder County, Colorado Tax Delinquent Properties for Sale List

Boulder County, CO has 1 tax-delinquent property on record. Get the official list from the County Treasurer, plus the tax sale and redemption rules.

Zach Fitch

Tennessee

, Goliath Teammate

Boulder County, Colorado currently has 1 tax-delinquent property on record, along with active foreclosures, liens, and probate filings compiled from public records. If you are searching for the Boulder County tax delinquent properties for sale list, this page gives you the live count, how to pull the official list from the County Treasurer, how Colorado's tax sale and redemption process works, and the due diligence to run before you bid.

TL;DR

  • 1 tax-delinquent property are currently on record in Boulder County, CO, refreshed weekly from public records.

  • Plus additional distressed properties (foreclosures, liens, probate) shown in the live breakdown below.

  • How to pull the official Boulder County tax-delinquent list, and how Colorado's tax-sale + redemption process works, so you act on real, current numbers, not a generic explainer.

GoliathData currently tracks 1 tax-delinquent property in Boulder County, CO, alongside the wider distressed-property picture below, data current as of July 13, 2026, refreshed weekly from public records:

Signal

Properties

As of

Foreclosure

5

Jun 22

Probate

3

Jul 13

Sheriff Sale

2

Jun 22

Final Judgment

1

May 11

Judgment Lien

1

Jun 22

Lien

1

Jun 22

Lis Pendens

1

Apr 20

Mechanic Lien

1

Mar 30

Notice Of Default

1

Apr 6

Permit Filing

1

Jun 8

Source: GoliathData real-time county records. Refreshed weekly.

What these numbers mean for buyers and investors

Boulder County is showing relatively modest distressed property activity. The most recent scan identified only 1 tax delinquency case, recorded in the week of June 29, 2026. This narrow tax-delinquent count suggests that Boulder County property owners are generally current with their obligations, or that the county's collection process moves quickly enough to prevent large backlogs of unpaid assessments.

However, the broader distress picture is more nuanced. The same snapshot shows 5 foreclosure filings (week of June 22), 2 sheriff sales (week of June 22), and 1 trustee sale (week of July 6). Together with probate cases (3), judgment liens (1), mechanic liens (1), and various notices of default and lis pendens, these signals point to a market where conventional mortgage defaults and construction disputes are more common than pure tax delinquency. For investors specifically hunting tax-delinquent properties, the thin count means competition may be lighter than in counties with dozens or hundreds of tax cases, but it also means fewer opportunities to find properties at the bottom of the price curve.

The presence of multiple foreclosure and sheriff-sale filings indicates that lenders are actively pursuing remedies, and title and lien clouds are active concerns across Boulder County. Any buyer considering distressed property here must be prepared to untangle complex liens and verify redemption rights before committing funds.

How to get the official Boulder County tax-delinquent list

The County Treasurer is the authoritative office responsible for tax delinquency and tax sales in Boulder County. To obtain the official list of tax-delinquent properties, contact the County Treasurer directly.

  • Visit the Boulder County Treasurer's office in person or call to request the current tax-delinquent property list.

  • Ask specifically for properties with unpaid property tax assessments. The Treasurer maintains this list and publishes it according to Colorado state statute.

  • Confirm the frequency of updates and whether the list is published online or available only by request.

  • Request information about upcoming tax sales, auction dates, and the process for bidding on delinquent properties.

  • Ask whether you can be notified of future sales or added to a bidder's list.

The County Treasurer's office is the single authoritative source. Do not rely on third-party websites claiming to publish the "official" Boulder County tax-delinquent list without verifying that information directly with the Treasurer.

How Colorado's tax sale and redemption process works

Colorado's tax sale procedure follows a statutory redemption model that protects property owners and shapes how investors must approach tax-delinquent purchases.

The process begins when a property owner fails to pay property taxes by the due date. The County Treasurer issues a notice of delinquency and typically publishes lists of delinquent accounts. Colorado law then allows the Treasurer to conduct a tax sale, in which the county offers the property to the public or accepts bids. Unlike some states where the county sells the property outright and the deed transfers immediately, Colorado operates under a redemption system: the buyer at a tax sale receives a tax certificate or deed, but the original owner retains the right to redeem the property by paying off all back taxes, interest, and costs within a specified redemption period.

The redemption period in Colorado is typically 75 days from the tax sale, though this can vary based on the type of sale and county procedure. During this window, the original owner can reclaim the property by paying what is owed. If redemption does not occur, the tax deed holder's interest matures into full ownership. However, the exact redemption timeline, interest rates, and costs applicable to Boulder County properties must be confirmed with the County Treasurer, as these details are set by state law and administered locally.

Properties sold at tax sale may carry significant liens and encumbrances. A tax sale does not automatically clear all debt; mortgage liens, judgment liens, and other claims may survive the sale and pass to the new owner. This is why title research and due diligence are essential before bidding.

Due diligence and risks

Purchasing a tax-delinquent property in Boulder County carries multiple risks that must be assessed before committing any money.

Title and Liens: A tax sale does not wipe clean all liens on the property. Federal and state tax liens, mortgage debt, judgment liens, and mechanic's liens may all survive the sale. Before bidding, conduct a title search or hire a title company to identify all recorded claims against the property. Determine the priority of liens and whether a junior lienholder will have any incentive to bid or redeem during the sale process.

Redemption Rights: The original owner has the statutory right to redeem during the redemption period. This means you cannot take full possession or refinance the property until redemption rights expire. Confirm the exact redemption window with the County Treasurer and plan for holding costs during this period.

Occupancy and Condition: A property may be owner-occupied, abandoned, or tenanted. If occupied, you may not be able to evict the owner or tenant immediately after purchase. Inspect the property's physical condition before bidding; tax-delinquent properties often require substantial repairs. Budget for title insurance, back taxes, accrued interest, sale costs, and rehabilitation when evaluating the true cost of acquisition.

Foreclosure and Other Encumbrances: Boulder County's current data show active foreclosures, sheriff sales, and mechanic liens. If a property is simultaneously subject to a tax sale and a mortgage foreclosure, the outcomes can conflict. Research any ongoing legal actions against the property.

HOA and Special Assessments: Properties in homeowners' associations may carry unpaid HOA dues and special assessments that do not disappear at tax sale. Verify HOA status and costs before bidding.

Frequently Asked Questions

How do I get the complete list of tax-delinquent properties in Boulder County?

Contact the Boulder County Treasurer directly. The Treasurer maintains the official list of properties with unpaid property tax assessments and can provide it on request. Ask about online publication options and whether you can subscribe to notifications of upcoming sales. Do not rely on unofficial lists; the Treasurer's office is the authoritative source.

When is the next tax sale in Boulder County?

The County Treasurer sets tax sale dates. Because only 1 tax delinquency case was recorded in late June 2026, the volume is low and sales may be held periodically rather than continuously. Contact the Treasurer to learn the scheduled sale dates, bidding procedures, and any minimum bid requirements specific to Boulder County.

How long do I have to redeem a property after I purchase it at a Colorado tax sale?

Colorado law provides a redemption period during which the original owner can reclaim the property by paying back taxes, interest, and costs. The standard redemption window is 75 days from the tax sale, but the exact timeline, interest rates, and redemption calculation for Boulder County properties must be confirmed directly with the County Treasurer, as administrative details can vary.

Is it worth buying a tax-delinquent property in Boulder County?

It depends on your investment goals, risk tolerance, and capital availability. Boulder County's low tax-delinquency count (1 case in late June 2026) means fewer opportunities and potentially lighter competition among bidders. However, any purchase carries significant risks: liens may survive the sale, redemption rights protect the original owner, occupancy disputes may arise, and repair costs can be high. Conduct thorough title research, verify condition, and calculate the total cost of acquisition before bidding. For many investors, the administrative burden and redemption period make tax sales a longer-term hold strategy rather than a quick flip.

More Colorado Tax Delinquent Property Lists

Browse the full Colorado tax delinquent properties for sale list for every county, or jump straight to a nearby list:

Sources