Costilla County, CO tax sales
Tax Sale Atlas maps the Costilla County, CO tax sale, one of 2,553 counties in 30 states. Colorado sells tax lien certificates paying up to 14%, redeemable for 3 years. Sale office, calendar and list locations read from the county’s own official pages on Jul 30, 2026.
How tax lien and tax deed sales work in Costilla County, seat of San Luis: sale calendar, auction platform, over-the-counter lists, and the offices that run each sale.
New to tax sales? Read how Colorado tax sales work or look terms up in the glossary.
- Next sale
- There is no fixed calendar.
- Format
- GovEase
- Registration
- What sells is a certificate of option for treasurer's deed, not the parcel outright.
- County office
- (719) 937-7672
On this page
How Costilla County sells delinquent taxes
Tax certificate sale (lien)
- Run by
- Costilla County Treasurer / Public Trustee (Costilla County Treasurer's Office)
- Frequency
- annual
- Typical timing
- The Treasurer holds the annual tax lien sale online in early November.
- Registration
- Register through GovEase before the sale.
- Next expected
- by the second Monday in December, 2026 (window; exact date posts closer to the sale)
When it runs
Registration and deposit
Register through GovEase before the sale. The county flier directs bidders to sign up at liveauctions.govease.com/Bidder/UserProfile and states: "You can create an account and register by visiting www.govease.com. You must create an account and then complete the online registration documents before you can be approved to bid." For the most recent posted sale the registration window ran October 14 through October 30. GovEase publishes bidder training videos at govease.com/bidderhelp, and its bidder support contacts on the county flier are support@govease.com and (769) 208-5050 ext. 2.
Sale format and venue
Tax deed sale
- Run by
- County Treasurer
- Frequency
- on application
- Typical timing
- There is no fixed calendar.
- Registration
- What sells is a certificate of option for treasurer's deed, not the parcel outright.
When it runs
Registration and deposit
What sells is a certificate of option for treasurer's deed, not the parcel outright. The treasurer may only accept bids above the combined amount owed to the lawful holder plus the treasurer's fees and costs. County officials, county employees acting in their individual capacity, and their immediate family members may not bid. Payment is by cash, cashier's check, bank check, or electronic funds transfer subject to the treasurer's bidding rules. Any overbid goes to junior lienors who filed a notice of intent to redeem and then to the property owner. Confirm the notice, the bidding rules, and the auction venue with the county treasurer.
Sale format and venue
Costilla County tax sale list and auction calendar
For Costilla County tax sale 2026 searches, use the county-run sources below rather than a copied parcel list, and confirm the parcel, registration cutoff, deposit, and payment deadline against the county before you bid. If the parcels on this list are vacant land rather than houses, what buying land at a tax sale hands you is the place to start.
Get the advertised list
Use 2025 Tax Lien Sale for Tax Year: 2024 (delinquent parcel list) for the current advertised parcels, then recheck it before the auction.Register to bid
Sale day
There is no fixed calendar. Bidding runs on GovEase; check posted sale dates, registration status, and bidding windows there.Confirm with the office
If the list, platform, and notice disagree, use County Treasurer as the source to confirm which parcels are actually offered.
Before you bid in Costilla County
4 checks
Start with the live sale list
Pull the current advertised parcels from 2025 Tax Lien Sale for Tax Year: 2024 (delinquent parcel list). Lists can change before the sale, so recheck the county source before you price a parcel.Confirm registration and deposit
What sells is a certificate of option for treasurer's deed, not the parcel outright. The treasurer may only accept bids above the combined amount owed to the lawful holder plus the treasurer's fees and costs. County officials, county employees acting in their individual capacity, and their immediate family members may not bid. Payment is by cash, cashier's check, bank check, or electronic funds transfer subject to the treasurer's bidding rules. Any overbid goes to junior lienors who filed a notice of intent to redeem and then to the property owner. Confirm the notice, the bidding rules, and the auction venue with the county treasurer.
Check the state rules that change the bid
Read the Colorado due-diligence checklist before bidding. Redemption, liens that survive a tax deed, title cleanup, and payment deadlines can change what a parcel is worth. Which liens survive is state law, so read what survives a tax deed in Colorado before you price the title work.Set a walk-away number
Work out what the parcel is actually worth with the rural land value estimator, then turn it into a ceiling with the tax deed max-bid calculator.
Over-the-counter (leftover) purchases
unsold liens and deeds
Liens that draw no bid are struck off to the county and the treasurer issues the county a certificate of purchase. The county may then assign, sell, or transfer those certificates in the manner, at the times, and on the terms set by resolution of the board of county commissioners, which is how county-held liens are sold between annual auctions. A certificate on property owing more than ten thousand dollars in taxes needs the property tax administrator's approval after published notice. Whether a county maintains a published county-held list, and on what terms, varies. Contact the county treasurer.
New to this path? Read how over-the-counter certificates work. Every state has its own name for what goes unsold, so check what Colorado calls its leftover tax-sale inventory.
Use the arrow keys to switch between these sections.
County offices
Tax Collector (runs the certificate sale)
County notes
- The county's Tax Lien Sale Information page links directly to GovEase and describes it as the county's tax lien sale auction vendor, so the certificate sale is an online auction rather than an in person courthouse sale.
- The most recent posted GovEase flier sets registration from October 14 to October 30 and a sale start of November 4 at 8:00 a.m. Mountain time. Dates shift year to year, so check the Treasurer's page each fall.
- Bidders must create a GovEase account and complete the online registration documents before the county approves them to bid.
- The Treasurer publishes the delinquent parcel list as a supporting document on the Tax Lien Sale Information page, titled by sale year and tax year, for example 2025 Tax Lien Sale for Tax Year: 2024.
- The Treasurer's office posted an urgent notice that, effective June 1, 2026, changes under Senate Bill 26-144 affect the treasurer's deed process and the office is not accepting new treasurer's deed applications until further notice. Certificate holders should confirm the current deed path with the office.
- Treasurer contact verified in the county staff directory: Michael Ray Vigil, County Treasurer, phone (719) 937-7672, fax (719) 672-6024, mailing address P.O. Box 348, San Luis, CO 81152.
- The county website sits behind a bot challenge, so automated fetches may be blocked. Load the pages in a normal browser.
Colorado rules
- Redemption
- Redemption may be made at any time before a treasurer's deed is executed, so the practical window runs well past the three-year mark and through the Article 11.5 auction process. The treasurer must hold that public auction between 110 and 125 calendar days after the known interested party notice is first published or mailed, which gives owners and junior lienors a further defined period to pay. A separate rule lets an owner who was under a legal disability when the deed was executed redeem within nine years of the deed being recorded, at 15 percent per year plus the present value of any improvements.
- Deed deposit
- The treasurer may require the applying lawful holder to post a deposit covering the recording fee plus the actual and reasonable cost of administering the auction, and all Article 11.5 fees and costs are chargeable as additional amounts owing under the tax lien. For bidders, the treasurer accepts cash, cashier's check, bank check, or electronic funds transfer subject to the treasurer's bidding rules. The statute sets no fixed bidder deposit percentage, so the deposit terms come from county bidding rules.
- Surplus proceeds
- Any overbid goes first to junior lienors in order of recording priority, measured as of the recording date of the application for public auction, who filed a notice of intent to redeem and whose liens are unredeemed, up to each lien's unpaid amount plus fees and costs. Whatever remains is paid to the property owner. The treasurer must post a public notice about these funds and mail the owner a notice within thirty calendar days of the auction. Unclaimed remaining overbids sit in escrow for six months without interest, then transfer to the state administrator under the Revised Uniform Unclaimed Property Act. An agreement to pay someone to recover an owner's overbid is unenforceable, and inducing one is a class 2 misdemeanor.
A tax deed does not convey marketable title. Most buyers file a quiet title action before they can resell or insure the property. See the due diligence guide.
Frequently asked questions
Does Costilla County, Colorado sell tax liens or tax deeds?
When is the Costilla County tax certificate sale?
How often does Costilla County hold tax deed sales?
I own a property in this sale. Can I stop it?
Where can I find the Costilla County tax sale list?
Verified Jul 30, 2026 against official county and state sources.
Tax Sale Atlas publishes educational information about public tax sale processes. This is not legal, financial, or investment advice. Rules, dates, and fees change; confirm with the county office before you bid.
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