California Code
CHAPTER 4 - Summary Proceedings for Obtaining Possession of Real Property in Certain Cases
Section 1174.21.

1174.21. A landlord who institutes an unlawful detainer proceeding based upon a tenant’s nonpayment of rent, and who is liable for a violation of Section 1942.4 of the Civil Code, shall be liable to the tenant or lessee for reasonable attorneys’ fees and costs of the suit, in an amount to be fixed by the court.

(Added by Stats. 2003, Ch. 109, Sec. 2. Effective January 1, 2004.)