Title 24 refers to Part 6 of the California Code of Regulations — the state's mandatory energy efficiency standards for all new construction, additions, and alterations to residential and nonresidential buildings. A Title 24 energy compliance report is a document prepared by a certified energy analyst that demonstrates your project meets these standards as part of the building permit process.
The report is submitted to your local building department as part of the permit package. Most California jurisdictions require a Title 24 compliance report before permit approval can be issued. California has enforced Title 24 energy standards since 1978, and the code is updated approximately every three years. The current code cycle is the 2025 Title 24 Standards.
Title 24 reports cover insulation levels, window glazing, HVAC systems, water heating, lighting, and in newer code cycles, solar and battery storage requirements. The specific requirements depend on your climate zone, building type, and scope of work.
Who needs a Title 24 report?
Anyone pulling a building permit in California for new construction, an addition, or a significant alteration will likely need one. This includes homeowners, contractors, architects, and developers. The two main report types are the CF1R (for single-family residential and ADUs) and the LMCC (for low-rise multifamily buildings).