In most cases, yes — room additions in California that involve conditioned space, changes to the building envelope, or new HVAC work require a Title 24 energy compliance report as part of the permit process.
What triggers Title 24 for an addition?
When an addition creates new conditioned living space, it typically requires energy compliance documentation. This includes bedroom additions, living room expansions, sunroom additions, and any project where new walls, windows, insulation, or HVAC equipment are being installed. The specific threshold and requirements vary by jurisdiction and project scope.
What if my addition is small?
Smaller additions may have different compliance pathways depending on local jurisdiction and the scope of energy-related work involved. Some building departments allow simpler compliance approaches for minor additions, while others require a full CF1R regardless of size. When in doubt, check with your local building department — or contact us and we can advise based on your project description.
How much does a Title 24 report cost for an addition?
Most residential additions fall under the Residential Report tier, starting at $245. Smaller ADU-scale additions may qualify for the ADU Report at $199. Contact us if you are unsure which tier applies to your project.