Title 24 Reports in Victorville
Victorville is climate zone 14. The Energy Commission files it with the rest of the Mojave, Lancaster and Palmdale in Los Angeles County and Ridgecrest in Kern County among them, rather than with the valley cities of its own county.
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- Upload your plans
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- Permit-ready report by email
A zone drawn around the desert
Zone 14 takes in 89 ZIP codes. Victorville sits in it with Adelanto, Apple Valley, Hesperia and Barstow; so do Lancaster and Palmdale in Los Angeles County, Mojave, California City and Ridgecrest in Kern County and, less expectedly, Julian and Campo in San Diego County's backcountry. San Bernardino (92401), on the far side of the mountains, is zone 10. The grouping follows the shape of the year rather than any line on a county map.
That shape has two ends. High desert winters bring a heating load well beyond the valley's, and summers bring a cooling load as well, so a Victorville design has to perform in both seasons. Insulation levels, window performance and equipment sizing are all tested against that pair of extremes rather than mostly against one of them.
One Victorville ZIP is not in the table
92395 has no entry in the Energy Commission's ZIP code table. The ZIPs around it, in Victorville, Apple Valley and Hesperia, are all zone 14, but a table cannot be the authority for an address it does not list. For a site in 92395, the zone is confirmed with the Commission's address tool, which plots a location against the boundaries that actually define the zones, before anything is modelled.
What the City asks for with an ADU
Victorville's submittal list for a new ADU or junior ADU includes energy calculations and photovoltaic plans "as required by the energy calculations", so the solar sizing comes out of the Title 24 report rather than being chosen separately. The same list asks for a Joshua Tree Inspection Report when square footage is being added, Residential Green Code measures with a construction waste management plan, and a percolation report where a new septic system is needed because sewer is unavailable.
Commercial tenant improvements need energy calculations too, alongside nonresidential green code measures and an application for clearance from the Mojave Desert Air Quality Management District.
Submitting, fire maps and power
Plans go in digitally through the City's Citizen Self-Service Portal, and an initial fee assessment follows once they are received. The City adopted the State Fire Marshal's fire hazard severity zone map for its local responsibility area, without modification, on 30 July 2025; whether a lot is mapped decides whether wildfire-resistant construction rules apply. Victorville Municipal Utility Services supplies power only to commercial and industrial customers at Southern California Logistics Airport and Foxborough Industrial Park, not to homes.
Common Title 24 Questions in Victorville
- Do I need a Title 24 report for a project in Victorville?
- Which climate zone is Victorville in?
- Is Victorville in the same climate zone as Lancaster and Palmdale?
- How much does a Title 24 report cost in Victorville?
- How long does a Victorville Title 24 report take?
- Do Victorville ADUs need a Title 24 report?
- Does a Victorville garage conversion need Title 24?
- Do room additions in Victorville require Title 24?
- Do Victorville warehouse and industrial projects require Title 24?
- What happens if Victorville plan check requests Title 24 corrections?
Victorville projects fall in California climate zone 14. 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.