California Code, Business and Professions Code - BPC § 7199.5

(a) All home inspections, including those defined in paragraph (1) of subdivision (a) of Section 7195, may, if requested by the client, be accompanied by a Home Energy Rating System (HERS) California home energy audit pursuant to regulations adopted by the Energy Commission in compliance with Section 25942 of the Public Resources Code.

(b) If the client requests a HERS California home energy audit, the HERS California home inspection report accompanying any home inspection report defined in subdivision (c) of Section 7195 shall comply with the standards and requirements established by the Energy Commission for HERS California home energy audits as specified in Article 8 (commencing with Section 1670) of Chapter 4 of Division 2 of Title 20 of the California Code of Regulations, implementing the California Home Energy Rating System Program.