Climate Zone 6: South Coast
Coastal Southern California — mild winters and moderate summers.
Every Title 24 energy calculation uses the climate zone of the building’s physical location. In Zone 6, the climate is mild / balanced, which shapes which building features have the most effect on compliance.
Typical project considerations
- Modest heating and cooling loads.
- Compact, dense lots make orientation and shading constraints common.
General guidance only — requirements depend on building type, scope and the code edition in effect for your permit application.
Example communities
Long Beach · Santa Monica · Ventura
City guides: Los Angeles · Long Beach · Ventura · Santa Barbara
Official references
Frequently asked questions
Where is California Climate Zone 6?
Climate Zone 6 (South Coast) covers areas such as Coastal Los Angeles & Orange counties, Ventura coast. Its representative weather city in CEC data is Torrance. Boundaries don’t follow city limits, so confirm by address.
Does Climate Zone 6 change my Title 24 requirements?
Yes. All Energy Code calculations use the project’s climate zone, which affects prescriptive values such as insulation and window performance and how heating and cooling are weighted in performance modeling.
What report do I need?
Single-family projects use CF1R, low-rise multifamily uses LMCC and nonresidential projects use NRCC forms — regardless of climate zone.
Ready to get your Title 24 report?
Upload your plans in minutes. We’ll handle the modeling, the forms and the plan-check revisions.