Quick answer: California: 2025 California Building Standards Code. Engineering is sealed by a California-licensed engineer. Watch for: Energy Code (Title 24, Part 6).
California reviews permits under the 2025 Building Standards Code and its own energy rules. We prepare architectural, structural and MEP drawings that meet both – sealed by a California-licensed engineer.
Which Building Code Applies in California?
Permits applied for from January 1, 2026 are reviewed under the 2025 California Building Standards Code (Title 24). Cities and counties may add local amendments. Source: California Building Standards Commission
Who Seals Engineering Drawings in California?
Engineering is sealed by an engineer licensed by the Board for Professional Engineers, Land Surveyors, and Geologists. State rules allow electronic seals and signatures (16 CCR 411). Source: BPELSG
Energy Code (Title 24, Part 6)
The 2025 Building Energy Efficiency Standards took effect January 1, 2026. New homes, additions and many alterations need energy compliance documents. Source: California Energy Commission
More California Permit Facts
- The 2025 energy standards replaced the 2022 standards, which had been in effect since January 1, 2023. (California Energy Commission)
- California rules allow an electronically generated seal, and the signature may be applied to documents electronically (16 CCR 411(e)). (16 CCR 411)
Quick Answers
Which code will my California project be checked against?
Most permits applied for from January 1, 2026 are reviewed under the 2025 California Building Standards Code (Title 24). Your city or county may add local amendments, so we confirm the rules for your address in your quote.
Will my project need Title 24 energy documents?
New homes, additions and many alterations must meet the 2025 Building Energy Efficiency Standards (Title 24, Part 6). Your quote tells you whether energy documents are needed for your scope.
I applied before 2026 – which code applies?
Generally the code in effect when the application was submitted. Send us your application date and the plan-check letter and we confirm which edition your reviewer is using.
Can you deliver digitally sealed plans for a California permit portal?
Yes. California rules allow electronic seals and signatures. If your city still wants paper, we provide wet-stamped sets.
Get Your California Plans Ready
Whether you are building in Los Angeles, San Diego, San Jose or a smaller California town, send us your address and scope. We confirm the code your jurisdiction uses, prepare the drawings and have the engineering sealed by an engineer licensed in California – with a fixed price in 5-10 minutes. See our California page for details.
Information checked October 2026 against the official sources linked above. Codes change – we confirm current requirements for your address in every quote.
