California Health & Safety Code §§ 17920, 17920.3

Establishes minimum standards for rental apartments and other residential dwellings, including a list of conditions that render a building "substandard" to the extent that the condition "endangers the life, limb, health, property, safety, or welfare of the public or the occupants." Includes in the list "dampness of habitable rooms," as well as "visible mold growth, as determined by a health officer or a code enforcement officer... excluding the presence of mold that is minor and found on surfaces that can accumulate moisture as part of their properly functioning and intended use." Authorizes local agency inspections to ensure compliance and provides remedies. (See also Cal. Civil Code § 1941.7.)