- Do ADUs Require Solar in California? — Most new detached ADUs in California require solar under Title 24. See which ADU types need panels, exemptions, and how to size your system in 30 seconds.
- Does a Garage Conversion ADU Need Solar? — Garage conversion ADUs in California are usually exempt from Title 24 solar — but not always. See the rules, edge cases, and when solar still pays for itself.
- Are Batteries Required for ADUs in California? — Batteries are NOT required for ADUs under California Title 24 — but they can reduce required solar size and dramatically improve NEM 3.0 ROI. Here's what to know.
- Can an ADU Share Solar With the Main House? — Yes — an ADU can share a Title 24 solar system with the main house in California. Here's how the combined sizing works and when it makes financial sense.
- How to Exempt Solar on an ADU in California — Learn the 4 legal exemptions from California's Title 24 ADU solar mandate — shading, roof area, structural, and battery offsets. With CF1R filing tips.
- Detached ADU Solar Requirements in California — All new detached ADUs in California require solar under Title 24. See sizing, costs, financing, and how to get an instant Title 24 quote in 30 seconds.
- Prefab & Modular ADU Solar Requirements — Prefab and modular ADUs in California must include Title 24 solar when permanently installed. Learn sizing, packaged options, and instant pricing.
- How Many Solar Panels Does an ADU Need? — Most California ADUs need 4–10 solar panels under Title 24. See exact sizing by ADU square footage and climate zone, plus an instant calculator.
- ADU solar permitting in California — Yes — every ADU solar system in California requires a building + electrical permit and utility interconnection approval. Here's exactly how the process works.
- Typical ADU solar installation timeline — 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…
- Can homeowners install their own ADU solar — Technically yes if you're the homeowner-builder — but California requires a licensed C-46 contractor or homeowner-permit pull, plus utility-approved…
- California Solar Rights Act and HOAs — No. The California Solar Rights Act (Civil Code §714) prevents HOAs from blocking residential solar, including on ADUs. HOAs can only impose limited…
- Selling property with leased solar — Yes, but the buyer must qualify to assume the lease or you must buy out the contract. Here's what to expect, common pitfalls, and how cash-purchased / HDM…
- Retrofit solar pricing for existing ADUs — Adding solar to an existing California ADU typically costs $4,000–$12,000 cash, depending on system size and roof complexity. HDM financing reduces…
- ADU solar and property value — Yes — owned ADU solar typically adds $4,000–$15,000 to California appraised value (Berkeley Lab study, ~$4/W). Leased solar generally does not add…
- Federal ADU solar tax credit 2026 — The 30% federal Investment Tax Credit (Section 25D) applies to cash-purchased California ADU solar systems through 2032. HDM-financed systems use Section…
- Best ADU solar panels in California — Top picks for California ADU solar in 2026: REC Alpha Pure-R (premium), JA Solar 440W (best value), QCell Q.PEAK 410W (standard). Each balances…
- ADU solar production in California — A typical California ADU solar system produces 4,000–8,000 kWh per year — enough to fully offset most ADU tenant electric loads under NEM 3.0. Production…