Cal. Health & Saf. Code § 50097
"Rehabilitation standards" means applicable state or local building or housing standards adopted pursuant to the State Housing Law, Part 1.5 (commencing with Section 17910) of Division 13, or continued in effect pursuant thereto.
For the purposes of Chapter 6.5 (commencing with Section 50660) of Part 2, "rehabilitation standards" (a) includes room additions necessary to prevent overcrowding of low-income or moderate-income households and (b) additionally, includes changes in grade, drainage facilities, or other improvements related to flood control and required by local ordinance or regulation as a condition to continued operation of a mobilehome park applying for or receiving a loan pursuant to Section 50662.2.
Ca. Health and Saf. Code § 50097