Costa Mesa vs Santa Ana
How do cool roof requirements rules compare between Costa Mesa, CA and Santa Ana, CA?
Costa Mesa and Santa Ana have similar restriction levels.
Costa Mesa, CA
Orange County
California Title 24 Part 6 energy standards require cool roof reflectivity for most new and replacement low-slope roofs in Orange County's climate zones 6, 8, and 10, covering all cities and unincorporated areas.
View full Costa Mesa rules →Santa Ana, CA
Orange County
California Title 24 building energy standards require cool-roof reflective materials on most new and replacement low-slope and many steep-slope roofs in Santa Ana's climate zone, reducing urban heat-island effects.
View full Santa Ana rules →Key Facts Comparison
| Fact | Costa Mesa | Santa Ana |
|---|---|---|
| Code | CA Title 24 Part 6 | - |
| OC zones | 6, 8, 10 | - |
| Trigger | 50% roof replacement | - |
| Certification | CRRC rated product | - |
| Authority | - | CA Title 24 Part 6 |
| Climate zone | - | Zone 8 |
| Rating body | - | Cool Roof Rating Council |
| Permit | - | Required |
Highlighted rows indicate differences between cities.
Costa Mesa FAQ
Does my asphalt shingle roof need to be reflective?
Steep-slope residential requirements vary by climate zone. Many zones allow standard shingles; check the current Title 24 prescriptive table or use a performance compliance path.
Are minor roof repairs covered?
Repairs under 50 percent of the roof area generally do not trigger Title 24 cool roof requirements, but local jurisdictions may apply stricter rules.
Santa Ana FAQ
Are minor patches covered?
Repairs under 50% of roof area generally do not trigger full Title 24 compliance, but anything more substantial does. Confirm with the Building Agency.
Where do I pull a roofing permit?
Santa Ana's Planning and Building Agency issues roofing permits. Online portal access is available at santa-ana.org under Permits.
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