Common questions about Title 24 in Climate Zone 10. Remember: Title 24 is statewide — the zone calibrates the energy budget, and your exact zone comes from your project address.
About Climate Zone 10 and Title 24
Title 24 is a statewide California energy code. Climate Zone 10 does not have its own separate rules — the same statewide standards apply, with the energy budget calibrated to this zone's climate. Your project's exact requirements are determined when your specific address is modeled in CEC-approved compliance software. Below are the questions we hear most often. For the full picture, see the Climate Zone 10 overview and the complete Title 24 guide.
More Climate Zone 10 guides: Title 24 requirements · Title 24 cost · permit process · zone overview.
The same topic in neighbouring zones: Climate Zone 9 and Climate Zone 11. Statewide: how Title 24 calculations work.