Everything Title 24 asks of a California project, from design-stage documentation through field verification and final sign-off — modelled to the 2025 Energy Code.
Certificate of Compliance documentation for new single-family construction, modelled to the 2025 Energy Code using CEC-approved compliance software. Prescriptive or performance path, whichever gets your design through plan check intact.
Remodels, additions and alteration-only permits, including the cases where existing-plus-addition modelling produces a materially better result than treating the addition alone.
Accessory and junior accessory dwelling units, detached and attached, including conversions. ADUs have their own compliance quirks and jurisdictions vary in what they demand at submittal.
Low-rise and high-rise multifamily under the 2025 Energy Code, which now separates multifamily requirements from single-family in ways that catch a lot of teams out.
Office, retail, warehouse, hospitality, medical and mixed-use. Envelope, mechanical, lighting, indoor and outdoor, plus process loads where they apply.
Certificate of Installation and Certificate of Verification work performed by our raters, who hold the major industry certifications (presented on request), with results registered with an approved data registry.
Nonresidential acceptance testing for lighting controls, mechanical systems and controls — the step that most often holds up a certificate of occupancy because nobody scoped it at design stage.
PV sizing and battery storage documentation, plus the electric-ready provisions the 2025 Energy Code expanded. Getting this right at design stage is far cheaper than retrofitting a panel schedule later.
The green building standards that sit alongside Part 6 and are frequently forgotten until plan check asks for them. Residential and nonresidential, mandatory measures and tier compliance.
Already have a report and a correction letter? Send both. We diagnose what plan check actually wants, correct the model, and turn the resubmittal around fast — including reports we did not write.
ASHRAE Level I and II audits, utility benchmarking and AB 802 building energy use disclosure for owners with reporting obligations or capital planning to do.
ENERGY STAR, DOE Zero Energy Ready Home and local reach-code compliance for teams targeting more than the statutory minimum — increasingly a condition of local approval rather than a marketing choice.
Most confusion about Title 24 comes from treating it as a single document rather than a sequence. Here is the actual order of events on a residential project.
| Stage | Document | Who produces it | When |
|---|---|---|---|
| Design | CF1R — Certificate of Compliance | Energy consultant (us) | With the permit application |
| Installation | CF2R — Certificate of Installation | Installing contractor | As work is completed |
| Verification | CF3R — Certificate of Verification | Certified California Energy Code Compliance rater | Field testing before final |
| Final | Registered documents on file | Data registry | Before final sign-off |
Nonresidential projects follow the parallel NRCC, NRCI and NRCA series, with acceptance testing in place of California Energy Code Compliance field testing.
Guides for builders and contractors
Same-day reports available. Send the plans, tell us the deadline, and we will work to it.