Title 24, Energy Code and CALGreen: three terms to untangle

Start with the framework

California’s Building Standards Code is organized as Title 24. The 2025 edition became effective January 1, 2026. The Energy Code is Part 6, while CALGreen is Part 11. When a proposal says “Title 24 included,” ask what documents and work that phrase actually covers.

It might refer to an energy compliance document in one proposal and a broader set of requirements in another. A label by itself does not establish who prepares the documents, responds to review comments or supplies any required field verification.

Source: California Building Standards Commission · California Energy Commission: 2025 Energy Code

Match the requirement to the work

The California Energy Commission says the 2025 Energy Code applies to permit applications submitted on or after January 1, 2026. It addresses new construction, additions and alterations; the measures that apply depend on the project.

Make a list of the actual changes: windows, lighting, insulation, ventilation, heating or other equipment. Ask the designer or contractor to connect each change to the applicable documentation. Do not assume that a generic compliance package covers an evolving scope.

Source: California Energy Commission: 2025 Energy Code

Assign the work behind the paperwork

For each required document, name the preparer, the person responsible for responding to comments and any installation or verification dependency. A product substitution can affect a documented design, so ask before ordering a different model.

Treat required checks as scheduling tasks. The project needs a plan for obtaining and retaining the necessary records, not just a line item that says someone will handle compliance. The building department can clarify the local submittal and inspection process.

Read corrections as specific tasks

When a review comment arrives, keep the original wording and identify the drawing or document it affects. Ask for a response explaining the revision. Do not reduce a multi-part comment to an informal instruction passed through several people.

At completion, save the final version of the relevant documents with the permit record. This is especially useful if future work changes equipment or builds on an earlier remodel. An old proposal is not a substitute for the approved final record.

Put it into practice

A decision table to keep handy