Health & Saf. Code, § 18909

(a) “Building standard” means any rule, regulation, order, or other requirement, including any amendment or repeal of that requirement, that specifically regulates, requires, or forbids the method of use, properties, performance, or types of materials used in the construction, alteration, improvement, repair, or rehabilitation of a building, structure, factory-built housing, or other improvement to real property, including fixtures therein, and as determined by the commission.

(b) Except as provided in subdivision (d), “building standard” includes architectural and design functions of a building or structure, including, but not limited to, number and location of doors, windows, and other openings, stress or loading characteristics of materials, and methods of fabrication, clearances, and other functions.

(c) “Building standard” includes a regulation or rule relating to the implementation or enforcement of a building standard not otherwise governed by statute, but does not include the adoption of procedural ordinances by a city or other public agency relating to civil, administrative, or criminal procedures and remedies available for enforcing code violations.

(d) “Building standard” does not include any safety regulations that any state agency is authorized to adopt relating to the operation of machinery and equipment used in manufacturing, processing, or fabricating, including, but not limited to, warehousing and food processing operations, but not including safety regulations relating to permanent appendages, accessories, apparatus, appliances, and equipment attached to the building as a part thereof, as determined by the commission.

(e) “Building standard” does not include temporary scaffoldings and similar temporary safety devices and procedures that are used in the erection, demolition, moving, or alteration of buildings.

(f) “Building standard” does not include any regulation relating to the internal management of a state agency.

(g) “Building standard” does not include any regulation, rule, order, or standard that pertains to mobilehomes, manufactured homes, commercial coaches, special purpose commercial coaches, or recreational vehicles.

(h) “Building standard” does not include any regulation, rule, or order or standard that pertains to a mobilehome park, as defined by Section 18214, or special occupancy park, as defined by Section 18862.43, except that “building standard” includes the construction of permanent buildings and plumbing, electrical, and fuel gas equipment and installations within permanent buildings in a mobilehome park or special occupancy park. For purposes of this subdivision, “permanent building” means any permanent structure constructed in the mobilehome park or special occupancy park that is a permanent facility under the control and ownership of the park operator.

(i) “Building standard” does not include any regulation, rule, order, or standard that pertains to mausoleums regulated under Part 5 (commencing with Section 9501) of Division 8.

(j) “Building standard” does not include any regulation adopted by the Department of Resources Recycling and Recovery, the Department of Toxic Substances Control, the Occupational Safety and Health Standards Board, or the State Water Resources Control Board concerning the discharge of waste to land or the treatment, transfer, storage, resource recovery, disposal, or recycling of the waste.