How Long Is a Title 24 Report Valid?

The code cycle is what dates a report

The Energy Commission updates the standards on a three-year cycle, and a project is assessed against the edition in force when its permit application is submitted. The 2025 Energy Code applies to buildings whose permit applications are made on or after 1 January 2026.

That date has passed, so the 2025 code is the code in force. A set of calculations prepared under the 2022 standards is not wrong — it was correct for its cycle — but it can no longer support a new permit application, because the application will be reviewed against 2025.

The application date is set locally

This is the detail that decides borderline cases. The Standards tie the edition to the date a permit application is filed or applied for, and the state's housing department notes that the application date is established by the local government. So the building department, not the date on a covering letter, decides which day an application counts from.

Departments differ on what has to be in an application before it is dated, and an application lodged just before a cycle change without the energy documentation or required signatures may not hold its date. Asking how your department dates applications is the way to be sure, because that is how a project that thought it had beaten a deadline finds it has not.

The design dates it too

A compliance report describes a specific building: these assemblies, this glazing, this equipment. Change any of the inputs and the report no longer describes the project, whatever the code cycle is doing.

Common examples are a window schedule revised for cost, a different heating or cooling unit substituted by a contractor, a roof assembly changed at tender, or a layout altered after plan check comments. Each of those needs the calculations revisited rather than simply resubmitted.

What does not invalidate it

Time alone, if nothing else moved. A report prepared six months ago for a project that has not changed, under a code cycle that has not changed, is as good as it was on the day it was issued. There is no shelf life written into the document.

Nor does a permit being slow. Once an application has been filed under a given cycle, a long plan check does not push the project into the next code.

The two questions worth asking

Has the code cycle changed since the report was prepared, and has anything in the design changed since? If both answers are no, the report stands. If either is yes, it needs revisiting — and it is far cheaper to establish that before a resubmittal than to have plan check establish it for you.

Common Title 24 Questions

1. What is Title 24?
2. Do I need a Title 24 report?
3. How much does a Title 24 report cost?
4. How long does a Title 24 report take?
5. What is included in a Title 24 report?
6. What plans do I need to upload?

Explore Report Turnaround

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3. How Long Does a Residential Title 24 Report Take?
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5. How Long Does a Revised Title 24 Report Take, and What Else Has to Follow?

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