California Code, Education Code - EDC § 81528

(a) A leased relocatable structure in which students are expected to enter and which is to be used for school purposes for a total time in excess of three years shall be subject to the provisions of Article 7 (commencing with Section 81130) and Article 8 (commencing with Section 81160) of Chapter 1 of this part.

(b) Subdivision (a) of this section shall not apply to trailer coaches used for classrooms or laboratories if such trailer coaches conform to the requirements of Part 2 (commencing with Section 18000) of Division 13 of the Health and Safety Code, and the rules and regulations promulgated thereunder concerning mobilehomes, are not expanded or fitted together with other sections to form one unit greater than 16 feet in width, are used for special educational purposes, and are used by not more than 12 students at a time, except that such trailer coaches may be used by not more than 20 students at a time for driver training purposes.

(c) The site on which a leased relocatable structure is located shall be owned by the community college district, or shall be under the control of the district pursuant to a lease or a permit.