Cal. PUC § 2791

(a) The owner of a master-metered mobilehome park or manufactured housing community that provides gas or electric service to residents may transfer ownership and operational responsibility to the gas or electric corporation providing service in the area in which the park or community is located pursuant to this chapter, or as the park or community owner and the serving gas or electric corporation mutually agree.

(b) Costs, including both costs related to transfer procedures and costs related to construction, related to the transfer of ownership process, whether or not resulting in a transfer of ownership to the serving gas or electric corporation, shall not be passed through to the park or community residents. Costs related to the transfer of ownership process, whether or not resulting in a transfer of ownership to the serving gas or electric corporation, shall not be passed through to the gas or electric corporation, except as otherwise provided in this chapter.

(c) Residents of mobilehome parks and manufactured housing communities constructed after January 1, 1997, shall be individually metered and served by gas and electric distribution facilities owned, operated, and maintained by the gas or electric corporation providing the service in the area where the new park or community is located consistent with the commission’s orders regarding unbundling, aggregation, master-metering, and selection of suppliers by residential customers. Each gas and electric corporation shall cooperate with the owner of any park or community constructed after January 1, 1997, to ensure timely and expeditious installation of the gas and electric distribution system and to eliminate any delay in the design, construction, permitting, and operation of the gas and electric system in the park or community.