Seismic Gas Shutoff Valves in Los Angeles
A seismic gas shutoff valve automatically cuts your gas line the moment strong shaking hits — before a broken line can feed a fire.
Free Estimates
On-site evaluation, written findings
Since 1953
Family trades, second generation
2–4 Days
Typical home. You don't move out
Firm Quotes
A real number in writing, before work starts
Discounts
Cash, senior & military
Sound familiar?
Call About This If…
For any home with gas service. It's the least expensive item in seismic safety, and it installs in a couple of hours.
You likely need it if…
- Your home has gas service and no automatic shutoff valve at the meter.
- Your insurer offers a credit for automatic gas shutoff (several do).
- You want the cheapest meaningful earthquake protection a house can get.
You likely do not need it if…
- A valve is already installed and tagged at your meter. They don't wear out on a schedule — if it's a certified valve, you're covered.
- Your home is all-electric. No gas, no valve.
If your house doesn’t need it, we’ll tell you that at the evaluation. That’s the whole point of doing one.
Start to finish
How the Work Goes
Duration: 2–3 hours. Disruption: Gas is off for the duration of the install only.
1
Confirm the meter setup
We verify the meter configuration and pick a certified valve model sized to your service.
2
Install
The valve goes on the house side of the meter. Two to three hours, and gas is off only during the work.
3
Relight & tag
We relight pilots, tag the valve, and leave the reset instructions posted — resetting it after a trip is a two-minute job you can do yourself.
Straight prices, no bait
What Does Gas Shutoff Valves Cost?
$350 – $900
Depends on valve size and meter configuration. Most single-family installs land near the middle.
See the full cost guide →Straight answers
Gas Shutoff Valves: Common Questions
What does a seismic gas shutoff valve actually do?
It's a mechanical valve at your meter that trips on strong shaking and stops all gas flow into the house — before a cracked line or toppled water heater can feed a fire. No power or electronics involved.
What happens if the valve trips when there's no earthquake?
Rare, but possible with a hard physical jolt to the meter. Resetting takes about two minutes with the instructions we leave at the valve, then pilots get relit. No parts, no service call required.
What if the install uncovers a plumbing problem?
Then you talk to our sister company. Mickey also owns One Hour Plumbing Service — gas line repairs and anything downstream of the valve route there, with the same no-upsell rule.
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Free estimates · Firm quotes in writing · Cash, senior & military discounts