California Code, Health and Safety Code - HSC § 17951.7

(a) Notwithstanding Section 17951, each city, county, or city and county may waive or reduce all building permit fees for improvements to the home of a person at least 60 years of age with a qualifying disability that are made to accommodate that disability.

(b) A local entity that chooses to waive or reduce building permit fees pursuant to subdivision (a) shall adopt an ordinance to establish a standard application form that may be used to apply for the waiver or reduction, including the requirements for proof of a qualifying disability.

(c) “Qualifying disability” means a physical or mental disability as defined in subdivisions (j) and (m) of Section 12926 of the Government Code.