Most California ADU solar projects take 6–12 weeks total: 2–4 weeks for design + permit, 1–3 days for installation, then 3–8 weeks for utility Permission to Operate.
Most California ADU solar projects take 6–12 weeks from contract signing to Permission to Operate. Installation itself is 1–3 days.
Below: full details, common edge cases, and how to get instant pricing for your specific California ADU project.
For most California ADU owners, how long does adu solar installation take? comes up at one of three points: planning, permitting, or post-installation. Each phase has its own answer below.
If you'd rather skip the reading and see a real number for your project, our calculator delivers instant pricing without a sales call.
Easy ADU Solar is a referral platform — we negotiate with multiple licensed C-46 California installers to get you fixed pricing. We surface this question because it's one of the top-asked items by California ADU owners researching solar.
Most California ADU solar projects take 6–12 weeks from contract signing to Permission to Operate. Installation itself is 1–3 days.
Under 30 seconds via our calculator — no phone or email required.
Garage conversions and JADUs are usually exempt from Title 24 solar but follow the same answer for voluntary installs.