Bay Area / Statewide remote service
Title 24 planning in Sonoma County
Preparation guidance for energy compliance documentation on projects in Sonoma County. Requirements are set by the Energy Code and enforced by your local building department.
Hypothetical example / Sonoma County
ADU and main-house remodel together
Suppose an owner builds an ADU and remodels the main house at the same time. Each may need separate documentation. Ask the reviewer whether the two are separate permits and organize drawings so each scope is clear. If one contractor handles both scopes, align schedules so any field verification for each building happens efficiently. Track which documents, forms and inspections belong to which building to avoid mix-ups at final. Clear sheet labels for the ADU and main house help everyone keep the two straight throughout construction.
Illustrative scenario only; not a statement about local projects, climate or permit rules.
Scenario checklist
- Separate scopes on drawings
- Ask about permit structure
- Provide ADU and remodel schedules
- Coordinate documentation timing
Before you start in Sonoma County
- 01Identify which agency reviews permits for your Sonoma County parcel (city, county or other).
- 02Confirm the building climate zone for the exact address using the CEC tool.
- 03Ask which Energy Code cycle applies to your application date.
- 04Ask whether local amendments or reach codes apply to your scope.
- 05Ask how energy forms should be included: on plan sheets, uploaded separately, or both.
Bay Area considerations
- +Ask whether a local reach code or electrification ordinance applies before selecting equipment.
- +Many projects here are reviewed by individual cities; confirm the reviewing jurisdiction first.
Questions
Is there an office in Sonoma County?
No local office is represented here. Documentation work is plan-based and available remotely statewide.
What climate zone is Sonoma County in?
Counties can include more than one building climate zone. Confirm the zone for your exact parcel with the CEC climate zone tool or your plan reviewer.
Who enforces the Energy Code in Sonoma County?
The building department with jurisdiction over your parcel. For unincorporated areas this is often the county; incorporated cities typically have their own. Start from the Sonoma County official site or your city's site.
How to use the official resources
Government links below are starting points for identifying the authority for the actual property and scope. They are not evidence of an affiliation, an office or approval of this service. Confirm whether the county, an incorporated city or another agency reviews the project.
The CEC climate tool supports a location-specific lookup; this guide assigns no climate zone. The CEC Energy Code Support Center separates edition-specific forms and building categories. Confirm the applicable edition, document family and any registration or verification requirements before using a form.
CEC Energy Code Support Center: forms, FAQs and trainingNext step
Planning a project in Sonoma County?
Published flat pricing from $149 residential and $399 commercial. Upload plans privately; no payment is taken online.