(

a) For the purposes of this chapter, “contractor” includes any person engaged in the business of the construction, installation, alteration, repair, or preparation for moving of a mobilehome or mobilehome accessory buildings and structures upon a site for the purpose of occupancy as a dwelling. (b) “Contractor” does not include the manufacturer of the mobilehome or mobilehome accessory building or structure if it is constructed at a place other than the site upon which it is installed for the purpose of occupancy as a dwelling, and does not include the manufacturer when the manufacturer is solely performing work in compliance with the manufacturer’s warranty. “Contractor” includes the manufacturer if the manufacturer is engaged in onsite construction, alteration, or repair of a mobilehome or mobilehome accessory buildings and structures pursuant to specialized plans, specifications, or models, or any work other than in compliance with the manufacturer’s warranty. (c) “Contractor” does not include a seller of a manufactured home or mobilehome who holds a retail manufactured home or mobilehome dealer’s license under

Chapter 7 (commencing with

Section 18045) of Part of Division of the Health and Safety Code, if the installation of the manufactured home or mobilehome is to be performed by a licensed contractor and the seller certifies that fact in writing to the buyer prior to the performance of the installation. The certification shall include the name, business address, and contractor’s license number of the licensed contractor by whom the installation will be performed. (

d) For the purposes of this chapter, the following terms have the following meanings: (1) “Mobilehome” means a vehicle defined in

Section of the Health and Safety Code. (2) “Mobilehome accessory building or structure” means a building or structure defined in

Section 18008.5 of the Health and Safety Code. (3) “Manufactured home” means a structure defined in

Section of the Health and Safety Code.