C.R.S. § 38-20-105

(1) Except as provided in subsection (2) of this section, every common carrier of goods or passengers who, at the request of the owner of any personal goods, carries, conveys, or transports the same from one place to another and every other person who safely keeps or stores any personal property at the request of the owner or person lawfully in possession of the personal property has a lien upon the personal property for reasonable charges for the transportation, storage, or keeping of the personal property and for all reasonable and proper advances made by the common carrier or warehouse, in accordance with the usage and custom of common carriers and warehouses. (2) In accordance with section 40-10.1-405 (5)(a), this section does not grant a towing carrier a lien on the contents of a vehicle if the vehicle was towed nonconsensually, as defined in section 40-10.1-101 (13).