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Building Code

Current Building Code

The 2025 California Building Standards Code is now in effect as of January 1, 2026.

 

Previous Building Code

2022 California Building Standards Code (California Code of Regulations, Title 24):

  • California Building Code (CBC), Part 2, Volumes 1 and 2
  • California Residential Code (CRC), Part 2.5, including:
    • Appendices H, K & Q
  • California Electrical Code of the California Code (CEC), Part 3
  • California Mechanical Code (CMC), Part 4
    • Appendices F & G
  • California Plumbing Code (CPC), Part 5
    • Appendices A, B, C, D, I, J, K
  • California Energy Code (CEC), Part 6.
  • California Historical Building Code (CHBC). Part 8.
  • California Fire Code (CFC), Part 9
  • California Existing Building Code (CEBC), Part 10.
  • California Green Building Standards Code (CGBSC), Part 11.
  • California Reference Standards Code
  • Town of Loomis Reconstruction Limits
  • 2021 International Property Maintenance Code

SNOW LOADS

Ground Snow Load - Zero

WIND

CBC Basic Wind Speeds: 88 mph for Risk Category I; 95 mph for Risk Category II; 101 mph for Risk Category III; and 105 mph for Risk Category IV. CRC ultimate wind speed = 110 mph Exposure Category – C, unless site complies with exposure B

RAIN LOADS

1 ½” per hour (100-year, 1-Hour Rainfall)

SEISMIC

Unless otherwise justified by analysis, all buildings and non-building structures within the Town limits are assigned to Seismic Design Category (SDC) D, except as follows:

  1. SDC C is allowed for residential buildings permitted and constructed under the CRC.
  2. SDC C is allowed for low-rise, wood-framed buildings permitted and constructed in accordance with the prescriptive (non-engineered) Conventional Light-Framed Construction provisions of CBC 2308.

Soil Site Class D shall be assumed for all sites per CBC 1613.2.2 unless otherwise justified by a registered design professional and/or geotechnical report.

SOIL BEARING PRESSURE

Allowable Foundation - 1500 psf without a Soils Report

Allowable Lateral – 100 psf/ft without a Soils Report

CLIMATE ZONE

Zone 11

SANITARY FACILITIES

2016 CPC Chapter 4, Table 422.1, Table A, Table 4-2, Table 4-3 & Table 4-4.

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