Think of a gas line quote as four numbers added together: feet of pipe, appliances connected, permit and inspection, and the time it takes to reach the route. National guides settle on $500 to $2,000 for a typical job, around $800 on average. Those are guide figures. A written quote from a Torrance plumber is the one that counts. What the work involves is laid out in gas line work in Torrance.
What do plumbers charge per foot for gas pipe?
Fixr's new-run figure is $15 to $25 for each foot, $10 to $20 for an extension, and $23 to $35 for replacing an old line, since that price includes removing the old pipe. Trenching an underground run lifts the figure to $25 to $30 a foot.
| Work | Guide price |
|---|---|
| New run, per installed foot | $15 to $25 |
| Extension, per foot | $10 to $20 |
| Replacing an old line, per foot | $23 to $35 |
| Water heater hookup, per foot | $10 to $18 |
| Range hookup, per foot | $10 to $15 |
| Dryer hookup, per foot | $10 to $20 |
| Underground run with trenching, per foot | $25 to $30 |
Short jobs break the per-foot logic. Ten feet costs nearly what twenty does, because the setup, the pressure test and the permit are fixed charges.
Is a gas plumber's hourly rate different?
Gas work is billed nationally at $75 to $130 an hour in Fixr's guide, frequently with a one-hour minimum on small extensions. Other guides spread wider, and California generally sits above national averages, so budget toward the top of any published band.
Gas piping is regulated. In California a contractor license is needed as soon as a job hits $1,000, and anything needing a permit is contractor territory. "Gas Safe" is a British scheme and means nothing here. What counts is the license number on your quote, and the state board's website will confirm it before you sign.
Why do two gas line quotes land so far apart?
Four factors explain nearly every difference between bids: how long the run is and how awkward it is to reach, which pipe material and route are chosen, how many appliances share the line, and what the permit and inspection at the end require.
Material changes the work. Black iron is rigid and suits indoor or above-ground runs, but never underground. Corrugated stainless tubing (CSST) bends around obstacles and goes in quickly, though it needs correct bonding and grounding. Buried lines need trenching, which alone costs $4 to $12 a foot, and a pipe crossing a driveway or patio costs more than one tracking a wall.
Reaching the route matters in older houses. Some postwar Torrance homes run gas pipe through crawl spaces and attic corners, and a plumber who has to open drywall prices that labor in. Appliances connect with flexible connectors, and an old connector on a stove or dryer is cheap to replace and worth doing.
What do the permit, inspection and pressure test add?
Fixr shows a permit at $50 to $300, an inspection at $50 to $75 and a pressure test at $75 to $100. Plumbing permits come from Torrance's Building and Safety division, and its FAQ lists pipes, fixtures and water heaters among them; its inspection codes include a rough gas piping check. Applications are filed through the city portal.
Put the permit question in the contract. Who files it? Is the fee in the price? Unpermitted gas work can cause trouble at resale and with insurance. Questions about the process can go to the city's office at 310-618-5910.
Permits, inspections and appliance connections all add to the base figure. Confirm the quote carries the pressure test, since that is what shows the new pipe holds gas.
What does an earthquake shutoff valve cost?
Fixr gives $350 to $1,000 installed. SoCalGas says the valve is installed on your own piping, never on the utility's equipment, that the utility will not fit one for you, and that you buy it from a supplier or a plumbing contractor, with the work meeting local building rules.
Once a quake of sufficient strength trips it, the valve closes the gas. SoCalGas recommends a professional or the utility reset it and check appliances for leaks. Details are in earthquake gas shutoff valves and how a tripped valve is reset.
Safety rule that never changes: if gas is in the air, leave the house first. SoCalGas takes calls on 1-800-427-2200, placed from outdoors, and a person in danger needs 911. Touch no switches, and never patch a gas pipe yourself.
How do I line up gas line quotes side by side?
Hand each plumber the same checklist: footage, pipe type, appliance connections, shutoff valves, permit, inspection, pressure test. Fixr puts shutoff valves for three or four appliances at $210 to $500 and a sediment trap at $100 to $150, so see whether they are counted.
Ask what the quote assumes about access, since opening a wall shifts the number, and require changes in writing before the work happens. On a home improvement job the deposit cannot pass a tenth of the price, with $1,000 as the ceiling. Our quote form starts the process, and the Del Amo Plumbing home page lists other jobs.
Common questions
How much time will the plumber spend here?
Connecting one appliance to a reachable line may be a matter of hours. A new run through the crawl space or underground could stretch to a day or longer, with the inspector's schedule adding waiting time. The appliance stays without gas until the inspection passes.
What do I ask before accepting a gas piping bid?
Get the contractor's license number, learn who obtains the permit, see what the price covers, and find out how the finished line is tested. Ask which pipe is planned and why. Put price, scope and any warranty in writing, and pay no deposit beyond the state cap.
Am I required on site during the gas work?
Yes, or someone trustworthy you send. Access to the meter, the appliances and the crawl space is required, and the house supply is normally shut for part of the day. Ask who relights pilot lights afterward, since that is easy to forget.
Can a homeowner run their own gas line?
Not in California, beyond replacing an appliance connector the maker's way. In Torrance gas piping is permitted and inspected work, and a leak risks fire or poisoning. Hire a contractor who holds the state license, and ring SoCalGas from outside if you ever smell gas.
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