California Business & Professions Code Section 7151
“Home improvement” means the repairing, remodeling, altering, converting, or modernizing of, or adding to, residential property and shall include, but not be limited to, the construction, erection, replacement, or improvement of driveways, swimming pools, including spas and hot tubs, terraces, patios, awnings, storm windows, landscaping, fences, porches, garages, fallout shelters, basements, and other improvements of the structures or land which is adjacent to a dwelling house. “Home improvement” shall also mean the installation of home improvement goods or the furnishing of home improvement services.
For purposes of this chapter, “home improvement goods or services” means goods and services, as defined in Section 1689.5 of the Civil Code, which are bought in connection with the improvement of real property. Such home improvement goods and services include, but are not limited to, carpeting, texture coating, fencing, air conditioning or heating equipment, and termite extermination. Home improvement goods include goods which are to be so affixed to real property as to become a part of real property whether or not severable therefrom.