ADU TITLE 24 ENERGY COMPLIANCE

ADU CF1R Service

CHEERS-registered Title 24 documentation for detached ADUs, attached ADUs, and JADUs. $400 flat fee, 2-3 day turnaround.

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Title 24 Compliance for ADUs

Every ADU in California requires Title 24 energy compliance documentation — but the rules differ by ADU type. Detached ADUs follow new-construction standards. Attached ADUs interact with the existing home's envelope. JADUs (within existing space) qualify for some exemptions. We handle all three correctly the first time.

Detached ADU CF1R

Standalone ADU treated as new construction. Performance path optimization for the climate zone, mechanical/water-heating selection, and insulation strategy.

Attached ADU CF1R

ADU sharing a wall with the primary residence requires careful envelope analysis at the shared-wall junction. We handle this correctly.

JADU CF1R

Junior ADUs within existing space have specific Title 24 exemptions — we apply them correctly so you don't over-comply.

Garage Conversion ADU

Converting a garage to ADU triggers Title 24 alterations rules with thermal envelope upgrade requirements. Specific expertise required.

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ADU Energy Compliance Done Right

ADU CF1R rejections are common when consultants apply standard new-construction rules without considering ADU-specific exemptions and shared-wall conditions. We get this right because we produce ADU CF1Rs every week.

ADU CF1R Pricing

Flat-fee pricing for ADU Title 24 documentation. No surprises.

Detached or Attached ADU

$400 flat fee for ADUs up to 1,200 sqft. Includes EnergyPro analysis, CHEERS registration, and one revision cycle.

JADU (Junior ADU)

$300 flat fee for JADUs within existing space. Streamlined analysis with applicable exemptions applied.

Garage Conversion ADU

$450 flat fee — slightly higher because of alterations rules at the existing-garage envelope. Same 2-3 day turnaround.

How Our CF1R Service Works

A 4-step productized workflow — most projects complete in 2-3 business days from plan upload to delivered CF1R.

Upload Plans

EnergyPro Analysis

CHEERS Registration

Email Delivery

Why Our ADU CF1R Service

ADUs make up 60%+ of our CF1R volume. We know the rules cold and produce ADU CF1Rs every week.

ADU-Specific Expertise

Detached, attached, JADU, and garage-conversion ADUs each have distinct Title 24 rules. We apply the right framework for each.

Climate Zone Optimization

California spans 16 climate zones with different Title 24 requirements. We tune the compliance path to minimize cost while meeting standards.

Plan-Check Familiarity

We know which ADU plan-check rejections are common in San Jose, Sunnyvale, Cupertino, Fremont, etc. — and we design CF1Rs to avoid them.

ADU CF1R FAQs

Yes. Every ADU in California requires Title 24 compliance documentation regardless of size, with the exception of certain JADU configurations that may be partially exempt. We can confirm whether your specific ADU triggers full or partial Title 24.

JADUs (Junior ADUs) under 500 sqft within existing space have specific Title 24 exemptions for unaltered components. We apply those exemptions correctly, which often results in a simpler CF1R than treating the JADU as new construction.

No. Detached ADUs are treated as new standalone units for Title 24. You can specify different HVAC, water heating, and insulation strategies than the main house. Performance path lets us optimize for ADU-specific use.

Possibly — California is moving toward heat pump water heaters as the prescriptive default. Climate zone, fuel availability, and cost factor in. We help you decide between heat pump (default), gas (with performance trade-offs), or electric resistance.

2-3 business days from when we receive plans and project details. Garage-conversion ADUs may take 3-4 days due to alterations analysis.

Some ADU components may require HERS field verification (CF3R) — typically duct leakage if there's a forced-air system. We flag this in your CF1R so your contractor knows to schedule a HERS Rater. CF3R is separate from our CF1R service.

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What Our Customers Say

Our clients are at the heart of everything we do at 9Builders, and their feedback reflects our dedication to quality and service. From beautiful remodels to innovative new builds, hear how we've transformed their spaces and exceeded their expectations.

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Tommy, Yuna, and their entire team were amazing from start to finish. We hired them for a big project that included foundation work, a structural retrofit, replacing the PGE main service line, and installing a new 200-amp panel. It was a pretty major job, and honestly, we couldn't have asked for a better crew to handle it. Everyone was professional, polite, and knew exactly what they were doing. They showed up on time, cleaned up every day, and were super respectful of our space.

Eliza R. (Source: Yelp)

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I hired 9Builders to work on my backyard and they did an amazing job. They built a nice structure that looks really great and added so much to my yard. The team was friendly and kept everything clean while they worked. The work was done quick and looked really good. Now they're working on the front of my house to add an extension, and I'm impressed how fast they worked. They finished the foundation in just two days...

Linda Trang T. (Source: Yelp)

★★★★★

9Builders transformed our kitchen into a beautiful, functional space. They listened to our ideas, offered great suggestions, and delivered high-quality work. The team was professional and respectful throughout.

Lorenzo Galderma (Source: Google)

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