Earthquake Safety in Berkeley, CA (2026)
4 verified earthquake safety rules for Berkeley, California, sourced directly from the municipal code and official government pages.
Verified from official government sources
Soft-Story Retrofit
Berkeley Municipal Code (BMC) Chapter 19.39 requires owners of wood-frame Soft, Weak, or Open Front (SWOF) buildings with five or more dwelling units, built before 1978, to seismically retrofit to a Collapse Prevention performance standard. Berkeley sits directly on the Hayward Fault and was one of the first California cities to mandate SWOF retrofits.
Berkeley Soft-Story Seismic Retrofit Ordinance
Heavy RestrictionsFoundation Anchoring
Berkeley enforces foundation anchoring (sill-plate bolting) and cripple-wall bracing for existing single-family wood-frame houses through Article 6 of BMC Chapter 19.28 (Repairs to Existing Buildings) and the city's adoption of the California Existing Building Code Appendix Chapter A3. Anchoring is mandatory when a substantial structural repair, addition, or change-of-occupancy triggers compliance, and is strongly encouraged for all pre-1980 homes given Berkeley's Hayward Fault exposure.
Berkeley Foundation Bolting & Cripple-Wall Bracing
Some RestrictionsUnreinforced Masonry
BMC Chapter 19.38 establishes a mandatory seismic hazard mitigation program for unreinforced masonry (URM) buildings — those built before 1956 with masonry bearing walls lacking modern seismic reinforcement. Berkeley adopts Appendix Chapter 1 of the 1997 Uniform Code for Building Conservation (UCBC) as the retrofit engineering standard.
Berkeley Unreinforced Masonry (URM) Retrofit Program
Heavy RestrictionsSeismic Gas Shutoff
BMC 19.34.040 requires installation of a listed motion-activated seismic gas shut-off valve in every newly constructed building containing fuel gas piping, and in existing buildings whenever a mechanical or plumbing permit is issued for any addition, alteration, or repair on a single-meter gas service.
Berkeley Seismic Gas Shut-Off Valve Requirement
Heavy RestrictionsLooking for Alameda County county-wide rules?
County ordinances apply to unincorporated areas and may supplement Berkeley city rules.
Earthquake Safety in Alameda County →