HSC § 18300.25

(a) The provisions of this part shall apply to any portion of a special occupancy park, as defined in Section 18862.43, that is also a mobilehome park, as defined in Section 18214. However, if a portion of a park is permanently dedicated to recreational vehicles, the provisions of Part 2.3 (commencing with Section 18860) apply in that portion of the park.

(b) The department shall not charge an owner of a park that is both a special occupancy park and a mobilehome park more than one annual operating permit fee pursuant to Sections 18502 and 18870.2.