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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.

Boulder County, Colorado Tax Delinquent Properties for Sale List
Zach Fitch

Tennessee, Goliath Teammate

Key Takeaways

  • Boulder County, Colorado has 1 tax-delinquent property on record as of July 13, 2026, according to GoliathData's county records.
  • Foreclosure is the largest distress signal GoliathData records in Boulder County, with 5 properties, followed by 3 probate cases and 2 sheriff sales.
  • Mortgage defaults and construction disputes (mechanic liens) are more common in Boulder County than tax delinquency.
  • The Boulder County Treasurer is the office that maintains the county's official tax-delinquent list.

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.

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, 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 county records.

What do Boulder County's distress 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. Boulder County's 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). Together with probate cases (3), judgment liens (1), mechanic liens (1), and a notice of default (1) and a lis pendens (1), 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 do I get the official Boulder County tax-delinquent list?

The County Treasurer is the office to start with for tax delinquency and tax sale information 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; ask how and where it is published.
  • 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 does Colorado's tax sale and redemption process work?

Colorado's tax-sale rules, including the type of sale, whether a buyer receives a lien certificate or a deed, who runs the sale, how long taxes must be delinquent before a sale, redemption rights and who may redeem, interest or penalty rates, and whether other liens survive, are set by Colorado law and the procedures of Boulder County. They differ from state to state and change over time, so this page does not restate them.

Sale type, redemption rights and interest are set by Colorado law and the county's own procedures; confirm them with the Boulder County Treasurer before bidding. Ask in writing what kind of sale it is, who conducts it, whether and until when the owner or a lienholder can redeem, what interest or penalty applies, and which existing liens remain after a sale.

Plan for redemption risk. In some states an owner can redeem before or after a sale, which can mean a buyer's money is returned with interest instead of a deed. Whether and when that applies in Colorado is a question for the Boulder County Treasurer and a local real estate attorney.

What due diligence and risks come with buying a tax-delinquent property in Boulder County?

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: Depending on state law, the original owner may have a right to redeem. If one applies, you may not be able to take full possession or refinance the property until it expires. Confirm whether and for how long 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?

Sale dates are set under Colorado law and county procedure. 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 sets whether and when an owner or lienholder may redeem, who may redeem, and what interest or penalty applies, and the answer can depend on the type of sale. Confirm the specifics with the Boulder County Treasurer before you bid, since they affect your timeline and return.

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 may 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

Find owner, tax and parcel records on the Boulder County, Colorado property records page.

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