Costilla County, CO tax sales

County offices

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 2026 GovEase flyer sets registration from October 12 to October 29 and a sale start of November 3 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 asks bidders to complete the W-9 with a consistent buyer or entity name each year, since certificates and any later treasurer's deeds are issued in that name.
• •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 2026 Delinquent Tax List for Tax Year: 2025.
• •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.

Colorado rules

Max interest rate

13% per year, set by statute (bidding is on price)Colorado Division of Banking - Interest Rates set by the Bank Commissioner (rate set under C.R.S. 39-12-103)Verified Oct 1, 2026

Minimum return

No statutory minimum return; what you earn is set by the price at the saleC.R.S. 39-12-103 - Redemption made, interestC.R.S. 39-12-103Verified Oct 12, 2026

Redemption

Redemption may be made at any time before a treasurer's deed is executed, so the practical window runs past the three-year mark and into the Article 11.5 process. Once a deed application is pending, the owner must file an intent to redeem with the treasurer no later than seven calendar days before the scheduled public auction, then pay the amount on the redemption statement while it is in effect, and must redeem the entire property. The auction itself is set 30 to 60 calendar days after the treasurer mails the notice of public auction. A separate rule lets an owner who was under a legal disability when a tax deed was executed under Article 11 redeem within nine years of the deed being recorded, at 15 percent per year plus the present value of any improvements.C.R.S. 39-12-103 - Redemption made, interestC.R.S. 39-12-103Verified Oct 12, 2026

Deed deposit

The treasurer may require the applying lawful holder to deposit up to one thousand dollars plus statutory fees when the application is accepted, applied against the treasurer's fees and costs, and all Article 11.5 fees and costs are chargeable as additional amounts owing under the certificate of purchase. A third-party winner may be charged up to three hundred dollars for processing. The statute sets no bidder deposit percentage, so payment terms come from the treasurer's written auction policies.C.R.S. 39-11.5-102 - Lawful holder, application for treasurer's deed, feeC.R.S. 39-11.5-102Verified Oct 12, 2026

Surplus proceeds

Junior lienors whose liens were recorded before the application for treasurer's deed may file a claim for overbid money within eight business days after the auction. Between the ninth and fifteenth business day the overbid is paid to them in order of recording priority, each up to the unpaid lien plus fees and costs, and whatever remains goes to the property owner. The treasurer mails the owner a notice within thirty days after the claim period ends. Unclaimed overbid stays in escrow for two years without interest to the claimant. Amounts under twenty-five dollars left unclaimed for six months go to the county general fund, and larger amounts left unclaimed for two years go to the state treasurer as unclaimed property. An agreement to pay someone to recover an unclaimed overbid is enforceable only if the fee is capped at ten percent and the agreement is made at least two years after the transfer.C.R.S. 39-11.5-112 - Treatment of overbid, agreement to assist in recovery of overbidC.R.S. 39-11.5-112Verified Oct 12, 2026

Governing statute

C.R.S. Title 39, Article 11C.R.S. 39-11-115 - To whom tax lien shall be soldC.R.S. 39-11-115Verified Oct 12, 2026

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.

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