California Health and Safety Code 19200-19205 and California Building Code 1.8.5 require seismic gas shutoff valves for certain new construction and major alterations. In San Leandro, PG&E and the City Building & Safety Division enforce these triggers under SLMC Title 7 Chapter 7-5.
Seismic gas shutoff valves (also called earthquake-actuated valves) automatically shut off natural gas service when ground motion exceeds 5.4 magnitude or specific accelerations. Under CBC 1.8.5 and HSC 19200, valves are required when: (1) the cost of an addition or alteration exceeds $10,000, (2) the project requires a building permit and includes work on the gas piping system, or (3) the building is in a designated high-risk zone. Valves must be ASCE 25-certified and installed downstream of the PG&E meter by a licensed plumber. The Hayward Fault corridor on the eastern edge of San Leandro makes seismic shutoffs especially relevant. Valves typically cost $200-$700 installed.
Major alterations performed without the required gas shutoff valve will fail final inspection and cannot receive a certificate of occupancy. Selling a property after a triggered alteration without the valve installed may give rise to civil disclosure claims under California Civil Code 1102.
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Side-by-side rule comparisons with other cities in Alameda County.
See how other cities in Alameda County handle seismic gas shutoff.
See how San Leandro's seismic gas shutoff rules stack up against other locations.
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