Title 24 Reports in Riverside
The City of Riverside is entirely climate zone 10. Riverside County is not — it spans three, from the edge of the basin through the Coachella Valley to the San Jacinto mountains.
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The city is one zone; the county is three
All 9 of the city's ZIP codes carry zone 10, March Air Reserve Base and the university campus included, so inside the city limits there is nothing to establish. The county is a much larger question: it reaches from the eastern edge of the Los Angeles basin to the Arizona border, and the Energy Commission divides it three ways.
Zone 10 takes the western half — Corona, Norco, Jurupa Valley, Moreno Valley, Perris, Hemet, San Jacinto, Menifee, Murrieta, Temecula and Lake Elsinore. Zone 15 takes the Coachella Valley and everything east of it: Palm Springs, Cathedral City, Rancho Mirage, Palm Desert, La Quinta, Indio, Coachella and Blythe. Zone 16, the mountain zone, holds the San Jacinto range at Idyllwild, Mountain Center and Anza.
The sharpest transition runs through the Pass
Beaumont and Banning sit beside each other on Interstate 10 in the San Gorgonio Pass. Beaumont is zone 10. Banning is zone 15, and so is Cabazon a few miles further east. Two neighbouring cities in two different zones, because the Pass is the gap where coastal air gives out and the desert starts.
No mailing address tells you which side of that you are on. It is why the zone is fixed from the project's ZIP code before anything is modelled, rather than read off the city or county name in the title block.
Permitting through Building and Safety
Work inside the city limits is permitted through the City of Riverside's Building and Safety Division, which checks the energy compliance forms against the drawings submitted with them. Projects on unincorporated land are reviewed by Riverside County instead — and given the spread above, what the county requires depends entirely on where in it the site sits.
Common Title 24 Questions in Riverside
- Is all of the City of Riverside in climate zone 10?
- Is Palm Springs in the same climate zone as Riverside?
- Why are Beaumont and Banning in different climate zones?
- Does the city or Riverside County review my permit?
- Does a Riverside ADU or garage conversion need an energy report?
- Does a Temecula or Murrieta project use the same zone as Riverside?
- What does Building and Safety check in the energy forms?
- Do Riverside tenant improvements need the nonresidential forms?
Riverside projects fall in California climate zone 10. 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.