Title 24 Reports in Thousand Oaks

Two official answers for Newbury Park

The CEC's ZIP-code table, the source this site uses for every climate-zone claim, assigns ZIP 91320 — Newbury Park — to zone 6 in full, and the rest of Thousand Oaks (91360, 91361, 91362) to zone 9. That is a defensible reading: the Commission's own rule for a ZIP that straddles two climate regions is that a jurisdiction may designate one zone for the whole ZIP, and the table does exactly that.

The Commission's building climate zone map, the layer behind its EZ Building Climate Zone Finder, draws the line somewhere else inside the same ZIP. Overlaid on the Census 2020 outline of the city, that map puts only about 8% of all of Thousand Oaks in zone 6 — the city's western edge — and shows about 71% of the city's own part of 91320 as zone 9, with the remaining 29% zone 6. The ZIP table and the map are both official CEC sources, and they do not agree with each other about where the line inside Newbury Park actually runs. A project there is not wrong to check twice.

The zone outside the ZIP table's edge case

Away from that one ZIP, the picture is simple. Camarillo, which Thousand Oaks touches on the west, is zone 6 like Newbury Park. Moorpark and Agoura Hills, the city's inland neighbours, are zone 9 like the rest of Thousand Oaks. The disagreement between the ZIP table and the map is specific to 91320; nothing else about the city's zone is in dispute.

A city stitched from four places

Census land-area data shows how much of two of the city's ZIPs is actually Thousand Oaks. Newbury Park accounts for more than a quarter — about 27% — of all the land inside the city, out of the much larger 91320 ZCTA. The reverse is true of 91361: only about 24% of that ZIP's land is inside Thousand Oaks city limits. The rest is split between the City of Westlake Village, the Lake Sherwood CDP, and land in no incorporated place at all. A 91361 mailing address is not automatically a Thousand Oaks permit.

Submitting in Thousand Oaks

Building permits go in through the TO/24 online portal, built on Tyler Technologies' Portico platform, with an Application Assistant to route a submittal to the right type; the Building Division counter is also open on a published schedule for applicants who want to submit in person. Ordinance 1741-NS brought the city onto the 2025 California Residential Code, effective 1 January 2026, as part of its regular code-cycle adoption. The power itself still arrives over Edison's wires, but Thousand Oaks joined Clean Power Alliance's residential rollout in February 2019 and defaults every account there to the 100% Green Power tier unless a resident opts down.

Common Title 24 Questions in Thousand Oaks

1. Is a Newbury Park project in zone 6 or zone 9?
2. Which climate zone applies to my Thousand Oaks project?
3. Does the city or Ventura County review my Thousand Oaks permit?
4. Do Thousand Oaks ADUs need a Title 24 report?
5. Does a Thousand Oaks room addition need Title 24?
6. Does replacing windows in Thousand Oaks need Title 24?
7. What happens if Thousand Oaks plan check requests Title 24 corrections?
8. How long does a Thousand Oaks Title 24 report take?

Thousand Oaks projects fall in California climate zones 6 and 9. 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.

Nearby cities we cover

• Title 24 in Simi Valley
• Title 24 in Oxnard
• Title 24 in Los Angeles
• Title 24 in Long Beach
• Title 24 in Santa Clarita

County

Title 24 in Ventura County