Title 24 Reports in Santa Clarita
The Santa Clarita valley floor is climate zone 9, but the city does not stop there. Its northern reach sits in zone 16, the mountain zone at the cold end of the state's range.
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The city reaches into the mountain zone
Valencia, Newhall, Saugus and Canyon Country — where nearly all of the population is — carry zone 9, a warm inland-valley designation shared with the San Fernando Valley. North and east of them, the 91390 ZIP climbing toward Green Valley and the Sierra Pelona carries zone 16.
Zone 16 is the mountain zone, and it is not a marginal difference. It is the coldest of the sixteen, with real heating loads, where zone 9 is cooling-driven. A design that complies comfortably in Valencia can be nowhere near compliant a short drive north.
None of the neighbours do this
San Fernando, Burbank and Simi Valley are all zone 9. Santa Clarita is the one city in this part of Los Angeles County that holds any zone 16, because it is the one that extends up into the mountains rather than stopping at the valley rim.
What that means for a project
For the great majority of Santa Clarita work — tract housing, ADUs and additions on the valley floor — zone 9 applies and there is nothing to resolve. For anything in the northern canyons it has to be checked, because heating-dominated requirements change the insulation and equipment a design needs. Permits are issued by the city, not by Los Angeles County, even though unincorporated county land begins immediately outside its boundary.
Common Title 24 Questions in Santa Clarita
- Is my Santa Clarita project in zone 9 or zone 16?
- Which parts of Santa Clarita are in the mountain zone?
- Does a Valencia addition need an energy report?
- Why do heating requirements change in the north of the city?
- Does the city or Los Angeles County issue my permit?
Santa Clarita projects fall in California climate zones 9 and 16. 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.