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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San Leandro, CA
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