ADU Title 24 Energy Reports in California
Fast, accurate, permit-ready documentation prepared statewide across every California climate zone. Starting at $250.
Quick Answer
Do California ADUs generally need Title 24 documentation? Generally, yes. New ADUs and JADUs typically need residential energy compliance documentation with the permit application. The exact process depends on the project scope — for example a new detached unit, an addition or a conversion — and on the local building department, so not every ADU follows the same path.
What information is required? The site address, a dimensioned floor plan, a window schedule, proposed HVAC and water-heating equipment, and insulation values.
What does the service include? Energy compliance calculations using state-approved software, climate-zone-specific modeling, disclosure of any measures that require HERS verification, a permit-submittal-ready PDF, and revision support if plan check requires it.
What is the starting price and standard turnaround? ADU Title 24 reports start at $250. Standard turnaround is 3–5 business days after complete project information and plans are received.
When might HERS verification be required? Some compliance measures — for example duct leakage or refrigerant charge verification — must be field-verified by an independent certified HERS rater. Whether a particular ADU triggers any depends on its design and compliance path. Apex identifies the measures and can coordinate with or refer the project to a rater (see HERS Rater Coordination); Apex does not perform the field verification.
Related: CF1R reports · pricing for every service.
About This Service
ADU Title 24 Energy Reports in California are required whenever a California building permit involves conditioned space matching this project type. We prepare every report using current state-approved compliance software, tailored to your project's specific climate zone and building department requirements.
Whether your project is in a major metro area or a small unincorporated community, the same statewide compliance standard applies — and our reports are formatted to meet the submittal requirements of building departments across all 58 California counties.
What's Included
Pricing
ADU Title 24 Report starts at $250. Rush service may be available for an additional $100 depending on project scope and scheduling availability. Final pricing depends on project scope and complexity — request a free quote for an exact number.
Frequently Asked Questions
We offer affordable Title 24 revisions whenever plans change before or after permit submittal. Send us the updated plans and a description of what changed, and we'll reissue a corrected report quickly.
Your completed report is delivered as a permit-submittal-ready PDF, formatted for direct upload to online permit portals or printing for in-person submittal — whichever your building department requires.
In most cases, yes — we can review an existing report and prepare a revision rather than starting from scratch, which is typically faster and less expensive than a brand-new report.
A Title 24 Energy Report is a California-mandated compliance document that demonstrates a building project meets the energy efficiency standards in Title 24, Part 6 of the California Code of Regulations. It's prepared using state-approved software and is required for most building permits involving conditioned space.
No. The Title 24 report (CF1R) is the energy design document submitted with your permit. HERS verification is a separate field inspection process — required only for certain compliance credits — performed by an independent certified HERS rater during construction.
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Fast, accurate, permit-ready. Standard turnaround is 3–5 business days after complete project information and plans are received. Rush service may be available depending on project scope.