C.R.S. § 39-11-108: Manner of conducting tax lien sale - definitions.

(1) On the day designated in the notice of sale, the treasurer shall commence the sale of the tax liens on those properties on which the taxes, interest, and fees have not been paid and shall continue the same from day to day, Saturdays and Sundays excepted, until the tax liens on each parcel are sold. Where two or more properties are valued and assessed as one parcel, the treasurer shall sell a single tax lien on such properties. The tax lien sale must be held at the treasurer's office or at another location in the county designated by the treasurer, and all properties offered at the sale on the same date of sale must be offered for sale at the same location; except that the sale may be conducted by means of the internet or other electronic medium.

(2) A tax lien sale conducted by means of the internet or other electronic medium to sell property under this article 11 must allow members of the public to submit bids by computer and permit the treasurer to accept bids for as long as the treasurer deems necessary. The county and its employees acting in their official capacity in preparing, conducting, and executing a tax lien sale of property under this article 11 are not liable for the failure of a device that prevents a person from participating in a sale under this article 11. As used in this subsection (2), "device" includes, but is not limited to, computer hardware, a computer network, a computer software application, and an internet website.

(3) If there is no bid for any tax lien offered, the offering of such tax lien must remain open until all the tax liens are offered for sale and the sale is ended or until the treasurer is satisfied that no more sales can be effected, whereupon it is the treasurer's duty to strike off to the county, city, town, or city and county the tax liens on those properties remaining unsold, for the amount of such taxes, delinquent interest, and fees thereon. When the treasurer strikes off a tax lien on any property, the treasurer shall issue to the county, city, town, or city and county a certificate of purchase. No taxes levied against any properties for which a county has purchased a tax lien under the provisions of this section are payable until the same have been derived by the county from the sale of a tax lien on such properties or from the redemption of such properties.