Adopted Building Codes

***2022 California Building Codes took effect on January 1, 2023***
If you are an architect, engineer, designer or contractor that performs work within the State of California, please be advised that new Building Codes took effect on January 1, 2023.

IMPORTANT: All permit applications submitted on or after January 1, 2023 must comply with the new codes.

Please make sure that you are familiar with these new codes at the time you submit plans as we cannot approve projects that are not in compliance with the new codes. California codes are currently available to view on the CA state website. You may also purchase the CA codes directly from the  International Code council. For more detailed information, review the information available here in Adopted Building Codes and the San Mateo Municipal Code > Title 23.

Resources and Information:

For information related to the development of the California Building Standards Code, please visit the following State agencies or departments:

2022 Edition of the California Building Standards Code and California Code of Regulations, Title 24

  • Part 1:    California Administrative Code
  • Part 2:    California Building Code
  • Part 2.5: California Residential Code
  • Part 3:    California Electrical Code
  • Part 4:    California Mechanical Code
  • Part 5:    California Plumbing Code
  • Part 6:    California Energy Code
  • Part 7:    Currently Vacant
  • Part 8:    California Historical Building Code
  • Part 9:    California Fire Code
  • Part 10:  California Existing Building Code
  • Part 11:  California Green Building Standards Code (CALGreen)
  • Part 12:  California Referenced Standards Code

DANGEROUS BUILDING CODE: 1997 Uniform Code For The Abatement of Dangerous Buildings

Seismic Design Category: CBC § 1613.1

Basic Wind Speed: 85 mph - 3 second gust

Wind Exposure: CBC § 1609.4

Climate Zone: 3

Soil Bearing Capacity: 1,500 psf max. or soils report required

Roof Drains: Designed to accommodate a minimum of 2 inches of rainfall per hour