Title 24 Reports in Fullerton

Fullerton is California climate zone 8. What sets its Title 24 work apart from most Orange County suburbs is the housing mix: about 1 home in 7 here is in a large apartment building, against roughly 1 in 12 statewide, and the multifamily side of the Energy Code comes up accordingly often.

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A denser housing mix than most of the county

Anaheim's page already counts Fullerton among its inland zone 8 neighbours, and that is accurate as far as it goes — but it is not what distinguishes a Fullerton Title 24 project. Census Bureau survey figures (the American Community Survey's 2020-2024 5-year estimates, tables B25024 and B25003) show about 1 home in 7 in the city sitting in a building of 50 or more units, against roughly 1 in 12 statewide. Occupied homes here are also majority-rented in effect: about 48% are rentals, against about 44% across California. That combination puts the multifamily and tenant-improvement side of the Energy Code — the rules that govern a large residential building's common areas, its mechanical systems, and its individual units — closer to the centre of the work here than in a suburb built mostly from single-family tracts.

Zone 8 inside the county, zone 9 across it

All four Fullerton ZIP codes, 92831, 92832, 92833 and 92835, are climate zone 8, matching the Orange County cities that border it: La Habra, Brea, Placentia and Buena Park. The city's one Los Angeles County neighbour, La Mirada, which touches Fullerton on the north-west, is zone 9 — as are Whittier and Hacienda Heights further into Los Angeles County. The zone line tracks the county line only roughly, though: 90631, which covers both La Habra and the unincorporated Los Angeles County community of La Habra Heights, still carries zone 8 in the CEC table on both sides of that county boundary.

Submitting in Fullerton

Residential and commercial permits go in through the Customer Self Service portal, EasyDev, with an in-person counter at the Building and Safety Division on the second floor of City Hall as the alternative. The City adopted the 2025 California Building, Residential, Electrical, Plumbing and Green Building Standards Codes under Ordinance 3348 and the 2025 California Fire Code under Ordinance 3349, each carrying local amendments addressing Fullerton's topographic, climatic and geologic conditions; both sets of codes apply to projects submitted on or after 1 January 2026. The Orange County Power Authority, the Community Choice Aggregation program that also covers Buena Park, Huntington Beach and Irvine, took over as Fullerton's default electricity provider for business customers in April 2022 and for residential customers on 1 October 2022, with Southern California Edison continuing to deliver the power and handle billing.

Common Title 24 Questions in Fullerton

Fullerton projects fall in California climate zone 8. The zone drives the envelope and equipment requirements a report has to meet, and a single city can span more than one, so it is confirmed per address.

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