Civil Code § 2924.15

(a) Unless otherwise provided, paragraph (5) of subdivision (a) of Section 2924 and Sections 2923.5, 2923.55, 2923.6, 2923.7, 2924.9, 2924.10, 2924.11, and 2924.18 shall apply only to a first lien mortgage or deed of trust that is secured by owner-occupied residential real property containing no more than four dwelling units.

(b) For purposes of this section, “owner-occupied” means that the property is the principal residence of the borrower and is security for a loan made for personal, family, or household purposes.