Colorado Revised Statutes Title 18. Criminal Code § 18-4-101. Definitions

(1) “Building” means a structure which has the capacity to contain, and is designed for the shelter of, man, animals, or property, and includes a ship, trailer, sleeping car, airplane, or other vehicle or place adapted for overnight accommodations of persons or animals, or for carrying on of business therein, whether or not a person or animal is actually present.

(2) “Occupied structure” means any area, place, facility, or enclosure which, for particular purposes, may be used by persons or animals upon occasion, whether or not included within the definition of “building” in subsection (1) of this section, and which is in fact occupied by a person or animal, and known by the defendant to be thus occupied at the time he acts in violation of one or more of sections 18-4-102 to 18-4-105.

(3) Property is that of “another” if anyone other than the defendant has a possessory or proprietary interest therein.

(4) If a building is divided into units for separate occupancy, any unit not occupied by the defendant is a “building of another”.