Gas Line Repair Services
If you smell gas right now, leave the building first. Once outside, call SoCalGas at 1-800-427-2200 from your phone — they dispatch free of charge to shut off the meter and locate the leak source. If there is immediate danger — visible fire, structural damage, or someone needing medical attention — call 911 first, then SoCalGas. After SoCalGas has confirmed the area is safe, call EZ Plumbing at (818) 908-2710 for the licensed repair. This page covers when to call SoCalGas first versus when to call us, why gas piping work requires a licensed contractor, what permits and pressure testing the City of Los Angeles requires, what failures we see most often in LA homes, and what the work costs. EZ Plumbing holds California license C-36 #583868 and has been doing gas piping work in LA since 1989.
If You Smell Gas: SoCalGas First, Then Us
Natural gas in California is odorized with mercaptan, which produces the characteristic rotten-egg or sulfur smell. The odorant is added specifically so leaks are detectable at concentrations far below the explosive threshold. If you smell it, treat the situation as a confirmed leak until SoCalGas tells you otherwise.
What to do immediately: leave the building. Do not flip light switches, do not turn appliances on or off (sparks from any electrical contact can ignite gas), do not start a car in an attached garage, do not use a phone inside the building if you can avoid it. Once outside, call SoCalGas at 1-800-427-2200 and report the leak. (If there is immediate danger — visible fire, structural damage, multiple people affected, or anyone needing medical attention — call 911 first and SoCalGas second.) SoCalGas dispatches a technician at no charge — usually within an hour, often faster — to shut off gas service at the meter, locate the source of the smell, and confirm whether the leak is on their side of the meter (their responsibility to repair) or the customer’s side (yours).
Once SoCalGas has made the area safe and confirmed the leak is on the customer side of the meter — anywhere from the meter to the appliance connection inside the house — they tag the system “off” and the repair becomes yours to arrange. That’s where a licensed C-36 plumbing contractor like EZ Plumbing comes in. We diagnose the actual leak source, replace the failed section or fitting, pressure-test the line per LADBS protocol, and arrange the inspection that the City of LA requires before gas service can be restored. SoCalGas does not turn the gas back on until the inspection passes.
What SoCalGas does not do: they don’t perform the repair on customer-side lines. Their role ends at confirming the location and making the area safe. Trying to skip the SoCalGas call and have a plumber handle everything is a serious mistake — only SoCalGas can safely shut off gas at the meter and verify the area is clear of accumulated gas before anyone starts work.
Why Gas Work Requires a Licensed Contractor
California law restricts gas piping work to licensed contractors. A California C-36 plumbing contractor or C-20 HVAC contractor is authorized to install, modify, or repair gas piping; an unlicensed handyman, a general contractor without the appropriate subcategory, and a homeowner doing their own work without a permit and inspection are all in violation. The reasoning is straightforward: a gas leak is a fire-and-explosion hazard plus an asphyxiation hazard in confined spaces, and the inspection-and-pressure-testing regime exists to catch errors before they become incidents.
EZ Plumbing’s license number is C-36 #583868 — verifiable through the California Contractors State License Board at cslb.ca.gov. We’ve held this license since 1989. When you hire us for gas line work, you can verify our license status online before signing anything; we encourage it.
What this means in practice: if someone offers you cheap, unpermitted gas line work, walk away. The savings are illusory — the work will not pass inspection at home sale, your homeowner’s insurance may decline coverage if the leak that eventually occurs traces to unpermitted work, and you carry personal liability for any harm caused by the failure of work you arranged without a proper license.
The Gas Line Failures We See Most Often in LA Homes
1. Corroded threaded fittings at appliance connections
The most common source of customer-side gas leaks we find. Threaded steel and brass fittings at the water heater, range, dryer, and pool heater connections corrode over decades — especially in laundry rooms where humidity accelerates oxidation, and in garages where the steel is exposed to temperature swings and occasionally wet floors. The fitting starts seeping at a rate too small to smell but registers on a soap test or an electronic gas detector. We see this constantly in homes built before 1980 where original fittings have never been replaced.
2. Failed or aged flexible appliance connectors
The flexible corrugated connectors between the rigid gas line and the appliance (water heater, range, dryer) have a service life — typically 10-15 years. Pre-1994 connectors used a different design that’s now considered non-current and should be proactively replaced regardless of visual condition. Post-1994 connectors are better but still fail eventually. The failure mode is usually a small leak at one end where the connector mates to the supply or appliance fitting. If your home has appliance connectors that visibly predate the mid-1990s — typically a smaller diameter, sometimes brass-colored rather than stainless — they should be replaced as preventive maintenance, not waited until they fail.
3. Underground line corrosion to detached structures
Many LA homes have buried gas lines running from the main building to a detached garage, a pool heater enclosure, an outdoor kitchen, or a guest house. These buried lines are typically black iron or coated steel; over decades, the coating degrades, the steel corrodes, and pinhole leaks develop. The symptoms are subtle — slight gas smell near the detached structure, an unexplained jump in gas bills, or a pool heater that won’t reach temperature because its supply line is leaking before the gas reaches it. We dig-and-replace, or we abandon the underground line and run a new code-compliant line above-grade with appropriate protection. For long runs we usually recommend replacement rather than spot repair on the original line — once one section has failed, the rest is at the same age.
4. Undersized lines after tankless or appliance upgrades
When a home is converted from a tank to a tankless water heater, or a high-BTU range or pool heater is added, the existing gas piping may not be sized for the new load. Symptoms: the new appliance underperforms (tankless cycles or won’t reach high flow), other appliances drop off when the new one runs (the range struggles when the tankless fires), or the system trips low-pressure faults. The fix is to upsize the supply line from the meter to the appliance, which usually means new piping under an LADBS permit and pressure test. This is also the most common gas-line job we quote alongside tankless installations — a 3/4-inch supply that was fine for a 40,000-BTU tank can’t support a 199,000-BTU tankless. Budgeting for the line upgrade as part of the tankless project is standard.
5. Aging black iron in pre-1960 homes
Same population of older LA neighborhoods we’ve discussed in other contexts. Pre-1960 homes typically have black iron gas piping with threaded fittings — durable when intact but vulnerable to corrosion at threaded joints, particularly in damp areas (under floors, in crawlspaces, near hose bibs that drip). The 60+ year service interval has caught up with a lot of these homes. Camera inspection isn’t really a tool for gas lines the way it is for drains; we test instead — soap-test or electronic detection at every accessible joint, and a pressure test of the whole system to find leaks we couldn’t access manually.
LADBS Permits and Pressure Testing — How Gas Line Work Actually Gets Approved
Every gas line modification, repair, or extension in the City of Los Angeles requires a plumbing permit from LADBS. We pull the permit before work begins. After the work is complete, the line is pressure-tested with the gas supply isolated — typically with air, at a specified test pressure held for the duration the city requires. The LADBS inspector witnesses or verifies the test result before signing off, and only after the inspector signs off does SoCalGas restore gas service.
What this means for the timeline: a typical residential gas line repair takes longer than the actual fix because the test, inspection, and SoCalGas restoration are sequential. The active repair work may be 2-4 hours; the inspection scheduling adds time (typically same-day or next-day in LA), and SoCalGas re-establishing service after the inspection passes adds more. A small repair done in the morning may not have gas service restored until late afternoon or the following day. Plan accordingly — if you have appliances that need gas (heating, hot water, cooking), the temporary outage during repair is real.
What we won’t do: skip the permit. Skipping the permit on gas work is a serious code violation with real consequences — homeowner liability if a future incident traces to unpermitted work, problems at home sale when the disclosure shows uninspected gas work, and potential homeowner’s insurance issues. We always pull the permit, even on small repairs. The permit fee is modest; the permit is your protection.
New Appliance Gas Line Installation
Common projects: gas line for a new outdoor BBQ, a fire pit, a pool heater, a generator, an outdoor kitchen, a tankless water heater conversion, or a gas dryer when the laundry room was previously electric-only. Each of these requires the supply line to be sized for the new BTU demand, the new run to be installed with code-compliant materials and supports, an appropriate shutoff valve at the appliance, and the same permit-and-pressure-test cycle as any other gas line work.
Sizing is the part homeowners most often underestimate. A gas line that’s appropriately sized for two appliances may not handle three; adding a new appliance often requires upsizing the supply line from the meter, not just running a branch to the new location. We calculate the total BTU demand of the existing-plus-new system and size accordingly. The actual sizing math follows the gas piping tables in the current California Plumbing Code — we’ll show you the calculation if you want to see it.
What Gas Line Work Costs
Variables are smaller than for sewer work but still significant. The main drivers: accessibility of the failed section (a fitting at an exposed appliance connection is fast; a corroded section behind a finished wall requires opening and patching the wall), length of replacement run, whether the existing line needs upsizing, and permit and inspection fees.
A typical single-fitting or short-section repair, including permit, pressure test, and inspection coordination, runs in the mid-hundreds to low-thousands. A full appliance gas line installation for a new BBQ or pool heater varies more — typically low-to-mid thousands depending on run length and any wall or floor opening required. A complete gas line upsizing from the meter to support a tankless conversion or high-BTU appliance addition usually runs in the mid-thousands to higher depending on the routing complexity. We provide a written estimate after walking the property and identifying what specifically needs to happen.
When You Don’t Need a Gas Line Repair (Yet)
A pilot light that won’t stay lit is usually a failed thermocouple, not a gas line issue — it’s an appliance service call, not gas line work. An appliance that occasionally runs slow could be a gas valve or regulator at the appliance rather than the supply line itself; the appliance manufacturer’s technician is usually the better first call. A gas bill that has crept up over the past few years without a clear cause is more often a rate increase or appliance efficiency degradation than a leak; SoCalGas will inspect for leaks without charge if you suspect one.
What we’d specifically advise against: replacing your own appliance gas connector. Even though the connector swap is mechanically simple, doing it without proper leak testing and without the appropriate paste/sealant grade is how minor leaks start. The $80 we’d charge to do the connector swap is a lot less than what a small leak costs in the long run.
Where We Service for Gas Line Work
Dedicated gas line repair pages: Los Angeles proper, Beverly Hills, West Hollywood, Studio City, Burbank, Glendale, Pasadena. Also Santa Monica, Culver City, Hollywood, Silver Lake, Echo Park, Highland Park, Eagle Rock, North Hollywood, Sherman Oaks, Encino, Tarzana, Woodland Hills, Canoga Park, Northridge, Chatsworth, Granada Hills, Reseda, West Hills, Van Nuys, Venice, Marina del Rey, Los Feliz.
Frequently Asked Questions
Leave the building immediately. Do not turn light switches on or off (sparks can ignite gas). Once outside, call SoCalGas at 1-800-427-2200 (or 911 first if there’s immediate danger — visible fire, structural damage, or anyone needing medical attention). After SoCalGas makes the area safe, call EZ Plumbing at (818) 908-2710 to repair the line. We are a licensed C-36 contractor (#583868) and pull all required LA City permits for gas work.
Only a California-licensed C-36 plumbing contractor or C-20 HVAC contractor can legally perform gas line work. EZ Plumbing holds an active C-36 license (#583868) and has been doing gas work in LA since 1989. Unlicensed gas work is dangerous and creates liability for the homeowner.
LADBS requires a plumbing permit for any gas line modification, addition, or repair beyond the meter. We pull the permit, schedule inspection, and provide you with the final approved paperwork. Skipping permits creates problems at home sale time and voids insurance coverage.
Yes. We size and install gas lines for new tankless water heaters, ranges, dryers, fireplaces, pool heaters, and outdoor kitchens. Tankless units often require upsizing the supply line — we calculate the BTU demand and size correctly the first time.
After any repair, we pressure-test the entire line with the gas supply isolated, hold pressure for the duration required by LA code, and visually verify all fittings. The LADBS inspector verifies our test before signing off. Only after passing inspection does the gas come back on.
Call EZ Plumbing for Licensed Gas Line Work
For a confirmed gas leak right now, SoCalGas first at 1-800-427-2200. For licensed repair after SoCalGas has made the area safe, or for any non-emergency gas line work (appliance installation, line upsizing, leak repair), call (818) 908-2710. California license C-36 #583868, in LA since 1989. We pull permits, pressure-test, and document the work.
Gas Line Repair Services in Los Angeles
EZ Plumbing provides Gas Line Repair across the greater Los Angeles area for homes, apartment properties, HOAs, retail centers, and managed commercial buildings. View our Google Business Profile for reviews, business details, and directions.