Gas Work Isn't DIY — It's Precision, Safety, and Code
Gas piping is the one area of plumbing where there's zero margin for error. A loose fitting doesn't just leak water — it leaks an invisible, odorless fuel that accumulates in enclosed spaces until a single spark creates catastrophe. That's why California requires specific gas certification beyond a standard plumbing license, why every new gas line requires a permit and pressure test, and why you should never trust this work to anyone less than fully qualified.
GB Plumbing handles gas line work daily — from running new lines during kitchen remodels to emergency repairs after PG&E detects a leak. We pressure test every connection, pull permits for every installation, and schedule inspections so your home is safe and compliant from day one.
"Remodeled our kitchen and needed a gas line run 30 feet from the meter to the new range location. GB handled the permit, ran the line in the crawlspace, connected it perfectly, and passed inspection first try. The inspector actually complimented their work."
— San Mateo homeowner, kitchen remodel project ★★★★★
Gas Line Services We Provide
When You Smell Gas: What to Do (and Not Do)
If you detect the rotten-egg smell of natural gas (mercaptan) in your home, follow this sequence exactly:
Get Everyone Out
Leave the house immediately. Don't flip light switches, use phones inside, or start your car in the garage. Any spark can ignite accumulated gas. Take your family and pets outside.
Call PG&E From Outside
Call PG&E's emergency line (1-800-743-5000) from outside the house or a neighbor's phone. They'll send a technician to verify the leak and shut off gas at the meter if needed.
Call GB Plumbing for Repair
Once PG&E confirms the leak and clears the area, call us at (650) 235-6443. We respond same-day to gas emergencies to locate and repair the source — restoring your gas service safely.
Pressure Test & Restoration
After repair, we pressure test the entire gas system to verify zero leaks anywhere. Once confirmed, PG&E restores service and your home is safe. We provide documentation for your records.
"PG&E found a small leak at our meter connection during a routine check. They shut off our gas and said to call a plumber. GB was here within two hours, replaced the corroded fitting, pressure tested everything, and PG&E turned us back on that evening. Could have been days without heat and hot water — they made it same-day."
— Millbrae homeowner, Lomita Park ★★★★★
New Gas Line Installations
The most common reason homeowners need new gas lines? Kitchen remodels. When you move the range to an island or switch from electric to gas cooking, a new gas line must be run — properly sized, safely routed, permitted, and inspected. We also install gas lines for:
Kitchen Remodels
Relocating gas ranges, adding a second cooktop, or converting from electric to gas. We route through crawlspaces, walls, or attics to reach any new location — and size the line correctly for BTU demand.
Outdoor Living Spaces
Built-in BBQs, outdoor kitchens, fire pits, patio heaters, and pool heaters all need properly sized gas lines. We run from your meter through underground conduit to any outdoor location on your property.
Tankless Water Heater Upgrades
Switching from tank to tankless often requires a gas line upgrade — tankless units demand higher BTU input than standard tanks. We upsize the line from the meter and ensure adequate supply for peak demand.
"Built an outdoor kitchen with a 5-burner grill, side burner, and fire table. GB ran a dedicated gas line from the meter underground to the patio — 60 feet through landscaping without a trace. Everything fires up instantly with plenty of gas flow. Exactly what we wanted."
— Hillsborough estate owner, outdoor kitchen project ★★★★★
Gas Safety: Earthquake Shutoff Valves
Living in earthquake country means your gas system needs an automatic seismic shutoff valve. These devices detect significant ground motion and instantly close the gas supply — preventing post-earthquake fires that cause more damage than the quake itself. California code now requires them on new construction, and we strongly recommend retrofitting existing homes.
Installation takes 1-2 hours, costs $300-$600, and provides permanent protection. After any significant tremor, you simply reset the valve manually rather than waiting for PG&E to check your entire system.
Serving the Entire Peninsula
We provide gas line services throughout San Mateo County and southern San Francisco:
Burlingame · San Mateo · Hillsborough · Millbrae · San Bruno · Daly City · San Francisco · and surrounding areas.
Gas Work Done Right — Safely, Permitted, and Inspected
Don't trust gas lines to anyone without proper certification. GB Plumbing handles every gas project with the safety, precision, and code compliance your family deserves.
(650) 235-6443