Natural gas meter and piping on the side of a house

Plumbing · Spokane and North Idaho

Gas lines in Spokane Valley, WA

Natural gas and propane lines tested, repaired and extended for ranges, dryers, water heaters, grills and new rooms, by journeymen with gas licenses.

4.8★★★★★4,000+ Google reviews

Call 24/7(509) 535-5946

Gas prices

Gas line service

Starting prices

Flex connectorFrom $284
Gas leak detectionFrom $383
Gas stop valve, 1/2 inchFrom $393
New gas pipe, up to 10 ftFrom $891

Get a quote

Smell gas? Leave the house, then call 911 or your gas utility from outside.

From$383Gas leak detection

From$1,050Whole-house pressure test

From$1,212New 1/2-inch line, up to 25 ft

24/7Emergency gas repair

What is included

Gas work we do.

Leak detectionFinding the leak, then a pressure test of the whole system with air.
ValvesGas stop valves at appliances and on the service replaced.
Appliance hookupsRanges, dryers and grills connected with new flex connectors.
New pipeSteel gas pipe run to a new appliance, room or addition, sized for everything on the line.
At the meterThe A-9 valve Avista provides, connected at the meter.
Permit and inspectionGas piping needs a permit and an inspection. We pull it and test the line before it goes into service.

Gold Seal plumbers working on an appliance during a training session — Hands-on training

Starting prices

Gas line prices.

Starting prices for gas testing, valves and new pipe. Every job ends with a test.

Crawl space or attic: Adds from $511
Permit, L&I or county: $143

Gas line starting prices · Gold Seal flat-rate book, 2026
Service	What it covers	Starting at
Flex connector 18 to 36 inch, 1/2 inch	A new flexible gas connector at an appliance.	From$284 Members from $255 Get a quote →
Flex connector 48 to 60 inch, 1/2 inch	A longer flexible gas connector.	From$321 Members from $289 Get a quote →
Gas leak detection Natural gas	Find a natural gas leak.	From$383 Members from $345 Get a quote →
Gas stop valve 1/2 inch	Replace a 1/2-inch gas service stop valve.	From$393 Members from $353 Get a quote →
Gas stop valve 3/4 inch	Replace a 3/4-inch gas service stop valve.	From$437 Members from $394 Get a quote →
Gas stop valve 1 inch	Replace a 1-inch gas service stop valve.	From$464 Members from $417 Get a quote →
A-9 valve at the meter Provided by Avista	Connect the A-9 valve Avista provides at the meter.	From$699 Members from $629 Get a quote →
Gas pipe, 1/2 inch Steel, up to 10 ft, exposed	Run up to 10 feet of exposed 1/2-inch steel gas pipe.	From$891 Members from $802 Get a quote →
Gas pipe, 3/4 inch Steel, up to 10 ft, exposed	Run up to 10 feet of exposed 3/4-inch steel gas pipe.	From$958 Members from $862 Get a quote →
Gas pipe, 1 inch Steel, up to 10 ft, exposed	Run up to 10 feet of exposed 1-inch steel gas pipe.	From$1,020 Members from $918 Get a quote →
Whole-house air test Exposed piping	Pressure test the house gas piping with air.	From$1,050 Members from $945 Get a quote →
New gas line, 1/2 inch Steel, up to 25 ft, exposed	Install up to 25 feet of new 1/2-inch steel gas pipe.	From$1,212 Members from $1,091 Get a quote →
Whole-house air test Concealed piping	Pressure test gas piping hidden in walls and ceilings.	From$2,071 Members from $1,864 Get a quote →

Longer runs, and new lines to grills, fire pits or generators, are priced on site. City permits are $89. Member prices are for Quality Service Club members. Starting prices from our 2026 pricebook. A real person confirms your price before anything is scheduled.

Repairs

Gas appliance hookups.

Gas lines · Gold Seal flat-rate book, October 2026
Service	What it covers	Starting at
Disconnect a range Gas range	Disconnect a gas range and cap the line.	From$320 Members from $288 Get a quote →
Grill flex hose Gas grill	Replace the flex hose on a gas grill.	From$383 Members from $345 Get a quote →
Hook up a range You supply it	Connect a gas range you bought.	From$504 Members from $453 Get a quote →
Hook up a dryer Up to 4 ft, you supply it	Connect a gas dryer you bought.	From$567 Members from $510 Get a quote →
Swap a gas grill Assembled	Disconnect the old grill and connect the new one.	From$567 Members from $510 Get a quote →

Member prices are for Quality Service Club members. Starting prices from our 2026 pricebook. A real person confirms your price before anything is scheduled.

Know the signs

Signs of a gas leak.

If you notice any of these, leave first and call from outside.

A rotten-egg smell

The odor added to natural gas so a leak can’t go unnoticed.

Hissing near a line

A hiss at a pipe, a valve or an appliance connection.

Yellow or orange flames

Burner flames should be blue. Soot around an appliance is another sign.

Feeling unwell indoors

Headaches or nausea that ease when you leave the house.

How it works

Test. Repair. Re-test.

Every gas repair ends with a test before service is restored.

01
Test
We find the leak, or measure what the line can carry.
02
Repair
The failed pipe, fitting or valve is replaced, or the line is extended or upsized.
03
Re-test
The system is pressure tested before the gas goes back on.

Washington and Idaho rules

Gas work is permitted work.

Gas piping needs a permit and an inspection, and it belongs with licensed plumbers. Skipped permits tend to surface during a home sale or an insurance claim.

PermitWe pull the permitFrom our book: $143 through L&I or the county, $89 through a city.
LicenseGas-licensed journeymenOur journeymen hold gas licenses, and Gold Seal is licensed in Washington and Idaho.
TestPressure testedEvery new or repaired line is pressure tested before it goes into service.
InspectInspection coordinatedWe coordinate the inspection, so the work is on record.

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Questions

Gas lines, answered.

Answers from licensed plumbers. Still unsure? Call (509) 535-5946, 24 hours a day.

What should I do if I smell gas?

Leave the building and take everyone with you. Don’t flip switches, use a phone inside or light anything. From outside, call 911 or your gas utility’s emergency line, then call us for the repair. Don’t go back in until the utility says it’s safe.

How much does gas line work cost?

At Gold Seal, gas leak detection starts from $383, a new flex connector from $284 and up to 10 feet of new exposed 1/2-inch steel gas pipe from $891. A pressure test of the whole house starts from $1,050 when the piping is exposed.

Do I need a permit for gas line work?

Yes. Gas piping needs a permit and an inspection. We pull the permit, install with approved materials, pressure test the line and coordinate the inspection. Permits are $143 through L&I or the county and $89 through a city.

Why did my furnace or water heater get weaker after adding a gas appliance?

Most likely the gas line is now too small for everything on it. Every appliance draws from the same supply, and adding a tankless water heater, a second furnace or a generator can starve the rest. We add up the load and the pipe length, then upsize the line if the numbers call for it.

Can you run a gas line to a grill, fire pit or generator?

Yes. We size the line for the appliance, put the shut-off where it belongs, pull the permit and pressure test before it goes into service. Swapping a gas grill on an existing line starts from $567, and new runs are priced on site.

Membership

What members get.

Priority scheduling for emergencies, 10% off services and materials, no minor diagnostic fee, a yearly plumbing and drain safety inspection and shut-off tags on your main water valve and water heater.

Members vs non-members →

Quality Service Club

Members save

For every home and business we serve

$149first year

Plus tax. Then $95 a year when you renew.

Priority scheduling for emergencies
10% off services and materials
No minor diagnostic fee
A yearly plumbing and drain safety inspection
Shut-off tags on your main water valve and water heater

Join the Quality Service Club Everything it includes →

Related services

The same company handles every pipe on the property, from the water meter to the sewer main.

Gas work? Licensed, permitted and tested.

Gas line repair and installation across Spokane and North Idaho by gas-licensed journeymen.

Call 24/7 (509) 535-5946

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