#title24

Building an ADU? Title 24 compliance isn't optional — and missing it can stall your permit fast.

💡 What Title 24 Covers 👉 Solar PV (for most new detached ADUs) 👉 Heat pump water heaters, insulation, and HERS testing

🔋 Good News: Not Everyone Needs Solar 👉 Garage/basement conversions are usually exempt 👉 Small ADUs may fall under the 1.8 kW exemption threshold

Bottom line: Know your Title 24 obligations before you submit your permit — it saves time, money, and headaches down the road.

🔗 https://uspowersolar.com/blog/adu-title-24-california

Not every ADU needs solar — but missing the requirement can tank your permit. Here's what the 2026 Title 24 rules actually say.

💡 When Solar IS Required 👉 New detached ADUs (backyard cottages, standalone units) 👉 System size is calculated by your ADU's square footage + climate zone

🔋 When You're Likely EXEMPT 👉 Garage/basement/attic conversions — no solar needed 👉 ADUs under ~700 sq ft often fall below the 1.8 kW minimum threshold

Bottom line: Know your ADU type before you apply for permits — the wrong assumption can cost you weeks and thousands in redesign fees.

🔗 https://uspowersolar.com/blog/adu-title-24-solar-requirements

Does Your California ADU Need Solar? ☀️🏠

Planning an ADU? 👉 California Title 24 may require solar

✅ Usually required 👉 New detached ADUs

❌ Often exempt 👉 Garage conversions 👉 Interior/basement ADUs

🔋 2025 update 👉 Battery-ready wiring is required

Bottom line:Know your ADU type before planning solar

Does Your California ADU Need Solar? ☀️🏠

Planning an ADU? 👉 California Title 24 may require solar

✅ Usually required 👉 New detached ADUs

❌ Often exempt 👉 Garage conversions 👉 Interior/basement ADUs

🔋 2025 update 👉 Battery-ready wiring is required

Bottom line: Know your ADU type before planning solar

Does Your California ADU Need Solar? ☀️🏠

Planning an ADU? 👉 California Title 24 may require solar

✅ Usually required 👉 New detached ADUs

❌ Often exempt 👉 Garage conversions 👉 Interior/basement ADUs

🔋 2025 update 👉 Battery-ready wiring is required

Does Your California ADU Need Solar? ☀️🏠

Planning an ADU? 👉 California Title 24 may require solar

✅ Usually required 👉 New detached ADUs

❌ Often exempt 👉 Garage conversions 👉 Interior/basement ADUs

🔋 2025 update 👉 Battery-ready wiring is required

Does Your California ADU Need Solar? ☀️🏠

Planning an ADU? 👉 California Title 24 may require solar

✅ Usually required 👉 New detached ADUs

❌ Often exempt 👉 Garage conversions 👉 Interior/basement ADUs

🔋 2025 update 👉 Battery-ready wiring is required