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.
Title 24 prescriptive paths require minimum aged solar reflectance and thermal emittance values for low-slope roofs and, in steep-slope residential applications, certain reflectance thresholds depending on climate zone. Orange County spans climate zones 6 (coast), 8 (inland), and 10 (foothills), each with calibrated requirements. Roof replacements above 50 percent of total roof area generally trigger compliance. Cool roof rating council certification is required to demonstrate eligible product values. Orange County Building Inspection enforces compliance in unincorporated areas through plan check and roof permit closeout inspections.
Installing a noncompliant roof can trigger plan-check rejection, failed final inspection, required tear-off, and Title 24 documentation penalties.
Other ordinances people look up for this city. Green dot = verified primary-source excerpt.
Irvine, CA
Leaf blowers in Irvine must comply with the construction/maintenance equipment hours: 7:00 AM-7:00 PM weekdays, 9:00 AM-6:00 PM Saturdays, and prohibited on ...
Irvine, CA
Outdoor music in Irvine is subject to IMC noise zone standards. Organized events with amplified outdoor music require city permits. Music must comply with th...
Irvine, CA
Amplified music in Irvine is regulated under IMC Title 6, Division 8, Chapter 2 (Noise). Sound must not exceed the exterior noise standards for the receiving...
Irvine, CA
Aircraft noise in Irvine is primarily from John Wayne Airport (SNA), regulated by federal FAA rules and the county's access and noise plan. The IMC noise ord...
Irvine, CA
Irvine regulates street parking under IMC Title 6, Division 3 including the 72-hour limit, street sweeping compliance, and red zone prohibitions per Section ...
Irvine, CA
Irvine restricts parking of commercial vehicles in residential areas under IMC Title 6, Division 3 and the Irvine Zoning Ordinance. Large commercial vehicles...
Side-by-side rule comparisons with other cities in Orange County.
See how other cities in Orange County handle cool roof requirements.
See how Irvine's cool roof requirements rules stack up against other locations.
Quick Compare
Help us keep this page accurate. If you notice an error or outdated information, let us know.