Meaning of "Improvement" ( under US laws and jurisprudence )
The term "improvement" is not defined by the Act. Where a term "is not defined by the statute, . . . we must assume that the General Assembly intended that th[e] phrase be given its usual and ordinary meaning." Enright v. City of Colorado Springs, 716 P.2d 148, 149 (Colo. App. 1985) (construing the term "improvement" in a statute of limitations); see also Anderson v. M. W. Kellogg Co., 766 P.2d 637, 640 (Colo. 1988) (construing the same term in a statute of repose). Where, as here, the material facts are undisputed, "the question whether a particular item is an improvement to real property is a question of law." Stanske v. Wazee Elec. Co., 690 P.2d 1291, 1293 (Colo. App. 1984) (Stanske I), aff’d, 722 P.2d 402 (Colo. 1986) (Stanske I).
An improvement to real property is commonly understood as "[a]n addition to real property, whether permanent or not; esp[ecially] one that increases its value or utility or that enhances its appearance." Black’s Law Dictionary 773 (8th ed. 2004). In other contexts, the supreme court has held that in determining the meaning of the term "improvement," the court’s primary focus must be the "nature of the activity involved." Anderson, 766 P.2d at 640-41 (quoting Stanske I, 722 P.2d at 406-07).
Thus, a component that is an essential and integral part of a larger system may be an improvement. See Two Denver Highlands Ltd. P’ship v. Dillingham Constr. N.A., Inc., 932 P.2d 827, 830 (Colo. App. 1996) (concrete used to build parking garage "was an essential and predominant part" of the garage and therefore was an improvement to real property); Embree v. Am. Cont’l Corp., 684 P.2d 951, 952 (Colo. App. 1984) (grading to lot was an improvement to real property because it "is essential and integral to the construction and completion of a house"). This is so even if the item could be removed from the property. Enright, 716 P.2d at 150 (glass vestibule attached by bolts to an entry to an airport terminal was an improvement because "the vestibule was a permanent fixture to the terminal itself," even though the vestibule could, theoretically, be unbolted and removed); Stanske I, 690 P.2d at 1293 (indicator light which was part of auger start switch, which in turn was an integral component of electrical system on grain elevator, was improvement even though switch "could probably be removed from the wall").