cost of installing gas line

$20 – $26 Per Foot

The cost of gas line installation is $20-$26 per linear foot with an average of about $24 per foot, when the line runs from an existing gas connection. When the pipe is run from the meter, cost rises to between $36 – $44 per foot for the project.

Average Cost of Gas Line Installation

Most homeowners pay an average of $24/foot or between $640 and $885 when plumbing a 30 foot long line from a previously installed connection. This job might include cutting and threading pipe, drilling holes in floor joists or other framing, using fittings to connect the pipe ends and similar plumber costs.

If you’re installing the home’s first gas appliance and the line must be run from the meter, cost can double. Being able to use copper piping is also less expensive than black iron pipe, which is required in some areas.

Average Do It Yourself cost

$85 – $130

Average Contractor Installed Cost

$640 – $885

Typical Cost Average

$715 – $800

Last Updated: Wednesday, January 12, 2022

Overview of Gas Line Installation

How much does adding a gas line cost? – How much does it cost to add gas to a house? These are two related, but very different questions.

Plumbing a gas line in a home that already uses gas costs about $715. That’s adding a gas line. In these cases, the new line can be run from the nearest existing line or connection.

If you’re installing the home’s first gas appliance, that is, adding gas to a home, cost rises closer to $1,600 or more. The line will begin at the meter or at a pipe just inside the home that was plumbed there when the house was built. If an inside line has been plumbed, it will be located near where the main line from the street or propane tank enters the home. The line may have a closed gas cock valve and will probably be capped.

This page of Business Finance News, or cost estimates, explores the cost of running a gas line in these two scenarios.

The first is an affordable option for the installation of new gas-burning equipment such as a gas fireplace or gas log insert. This can also be true for projects like replacing a gas furnace with a larger unit to serve more space. The more gas a home uses, the larger the diameter pipe required.

Cost factors are discussed, and retail prices for the materials needed are listed, though most homeowners hire a plumber or mechanical contractor to do the work. Hourly plumbing costs and time frame are included.

Along the way, gas line installation costs from other reliable sites are mentioned to show the range of potential pricing.

Product and Installation Supplies Cost Details

Gas Line Installation Cost Factors

How much does this common indoor project cost? These factors will assist you in narrowing your estimate.

  • First Line or Additional Line – As noted, this is a major factor. If you already use gas for a dryer, range or other appliance, the plumbing contractor will find the nearest gas line. In most cases, the line is cut, and a connection is added that allows for the addition of the new line to the new appliance.
  • Length of the Gas Line – At an average cost of $24 per foot, the length of the pipe run significantly affects cost.
  • Difficulty of the Installation – If you’re installing a free standing fireplace in the basement, where the furnace is located, installation will be much easier than if the fireplace will be in an upper bedroom, even if the length of the gas line is the same.
  • Type of Line Used – Black pipe, made of iron, is the standard. However, a product called Corrugated Stainless Steel Tubing (CSST) can be used where code allows and is preferred in areas subject to earthquakes. CSST costs a little less than black pipe, though is considered a 50-year product. Black pipe lasts indefinitely. In some areas of the USA, they allow the use of flexible copper tubing to bring gas to appliances. It’s very important to know the code in your area, which is why we recommend hiring a plumber to do this job.
  • Permit Cost – This job requires a permit, and cost varies significantly among cities and counties.
  • Whether Equipment Installation is Included – When gas furnace replacement requires a different size or updated line, the furnace contractor will connect the furnace once the line is installed. However, for simpler jobs, the plumber might set the equipment, gas logs for example, and connect the gas. This “total package” will cost more than running the line but might save you money versus hiring separate contractors.
  • Converting for Propane – Most appliances are fitted with a valve sized for natural gas (NG). If your home uses propane (LP), the valve in the range or dryer, for example, will have to be replaced with one sized for propane.
  • Gas Pipe Removal – Gas line replacement cost is higher due to extra labor and the disposal fees.
  • Who Does the Work – DIY gas line installation isn’t common, but much of the cost of hiring a plumber is labor. So there is money to be saved. See the DIY section below for details and our recommendation – and your chance to share your vote on DIY or not.
  • Where you Live – Cost of living and contractor competition where you live can affect pricing by up to 40%.

Retail Gas Line Cost – Pipe and Supplies

Few materials are required.

If you use black pipe, you’ll buy pre-cut sections that are threaded on both ends. The planning will require determining the route from the meter or nearest connection to the equipment location. Then you’ll have to configure the line using readily available pipe lengths including 10’, 6’, 4’ and 18”.

You’ll use straight and angled fittings as connectors plus pipe thread sealant (pipe dope) or PTFE (yellow) thread tape. Check with your local plumbing inspector to find out what he or she wants. Some are picky regardless of what code permits.

If you choose, and code allows, CSST tubing, it is sold in rolls and connected with brass fittings.

Here are sample costs for black pipe and CSST tubing plus fittings and supplies.

  • $3.00 – $4.00 per Linear Foot | .75” to 1.25” Black Pipe in Various Lengths.
  • $2.25 – $3.00 per Linear Foot | CSST Tubing in rolls 25’ to 100’.
  • $7.00 – $9.00 per fitting | Brass CSST Fittings.
  • $8.00 – $12.00 | 8 oz. Jar Teflon Pipe Thread Sealant.
  • $3.00 – $4.00 | 200 to 300 inch PTFE Tape roll, plenty for most gas line jobs.

Permits, Inspection, Related Costs and Installation Time

Permits and Inspection Cost

  • $50 – $200 | A new gas line will require a permit, and the cost varies based on your local fees and the length of the line.

Related Costs

Here are a few itemized costs related to installing a gas line. You might have a few of these depending on the scope of your project, and their cost are in addition to what prices for gas line installation.

  • Cost to Remove Gas Line: $6.00 – $8.00 per foot
  • Cost to Convert an Appliance for Propane: $40 – $75
  • Cost to Hook Up a Gas Appliance: $45 – $60 per appliance
  • Cost to Run Gas Line from Street to House (includes trenching, gas line installation and connections, backfilling): $800 – $2,500 for most suburban lots
  • Cost to Install a Gas Line Shut-off Valve: $60 – $100 each, though double that in earthquake zones
  • Cost of a Gas Line Pressure Test: $75 – $150, according to HomeGuide, and that’s a pretty accurate estimate
  • Cost to Install a Vent Flue: $650 – $950, required for many gas-burner appliances

Other Costs and Installation Time

Plumbers charge between $80 and $130 per hour in most locations. In cost per linear foot, this usually comes to about $18 to $22 per foot with the rest of the project cost being materials.

Plumbers install gas line at the rate of 4-8 feet per hour based on the complexity of the job.

  • 2 – 3 Hours | A 10’ to 20’ line in an open area such as a basement or garage
  • 5 – 5 Hours | A 10’ to 20’ line from one level to another
  • 4 – 6 Hours | A 15’ to 30’ line in an open area or where few obstacles impede the job
  • 5 – 8 Hours | A 15’ to 30’ line in a more complex setting such as running to another level or installation in an attic

DIY or Hire a Pro?

We can’t recommend doing gas line work yourself. If you’re experienced with gas connections, you might be able to save a little by hooking up the appliance rather than having the plumber make the connection.

Fixr says, “Installing a gas line should not be done DIY. Gas is flammable, and if there are loose couplings or the wrong type of pipes used, it could be hazardous,” which might be an understatement. Sure you might save the estimated $24 per linear foot, or $24.50 according to Homewyse, but there’s just too much potential downside, in our opinion.

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