Cal. Health and Safety Code - HSC § 50692. Section 50692.
As used in this chapter:
(a)
“Owner-builder” means any person or family who provides all, or a substantial amount, as determined by the department, of the labor necessary to build a housing unit that will be the principal residence of that person or family.
(b)
“Owner-building” means the process engaged in by owner-builders in the construction of a principal residence.
(c)
“Self-help rehabilitator” means any person or family who
provides all, or a substantial amount, as determined by the department, of the labor necessary to rehabilitate, renovate, or improve that person’s or family’s principal residence.
(d)
“Self-help rehabilitation” means the process engaged in by self-help rehabilitators in the rehabilitation, renovation or improvement of their principal residences.