Every newly constructed detached ADU in Tehama County, California must include a Title 24-compliant solar PV system. Tehama County spans climate zone 11, which determines exactly how many kilowatts your specific project must install for code compliance.
Local building departments across Tehama County enforce Title 24 at plan check. Plans submitted without a properly sized solar system are routinely rejected unless a documented exemption (shading, roof area, structural) applies.
Tehama County's Sacramento Valley location provides good solar exposure. Red Bluff and Corning see growing interest in ADU construction.
Title 24 multiplies your ADU's conditioned floor area by a climate-zone-specific kW factor. Across Tehama County's climate zone 11, most ADUs land in the 1.6–4.0 kW range — typically 4 to 10 modern (~400W) panels.
Title 24-compliant ADU solar packages range from $4,000 (Standard cash) to $15,000+ (Premium with battery) across Tehama County. HDM financing typically reduces effective cost by ~40% via commercial ITC pass-through. Main utilities serving the county: PG&E.
Yes. Title 24 is California state law and every jurisdiction in Tehama County enforces it at permit submittal.
Tehama County sits in climate zone 11. Use our cost calculator to map your exact ZIP code to its Title 24 climate zone.
Exemptions are project-specific, not countywide. The most common are shading (<70% annual solar access), insufficient roof area, and structural infeasibility. Your designer documents these on the CF1R compliance form.