How much does gas line installation cost in St. Louis?
By Our research team · Last verified · Methodology
Most new gas lines to one appliance in St. Louis cost $300–$1,500 for the pipe, a licensed plumber's time, a shutoff valve and a pressure test. $660 is the going rate; a 50+ ft run is $910–$4,050.
How we get this data- Typical
- $660
- Low end
- $150
- High end
- $2,550
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St. Louis's price band
St. Louis is pricier than 75% of the 195 US metros we price for gas line work.
A short new gas line to one appliance costs $300–$1,500 in St. Louis, and $660 is typical. Hooking up a range to an existing line is $130–$460, a grill or fire pit line $410–$2,050, and a standby generator line $510–$3,050.
Many St. Louis homes are older brick houses with original steel gas piping, so adding an appliance can mean replacing a section. Spire handles meters and service lines.
Installed prices include the pipe, fittings, labor, a shutoff valve and a pressure test. New gas piping is licensed work, and a permit ($50–$350) and inspection are the norm in St. Louis.
Comparing cities, or after the US-wide picture? See the national guide: Gas line installation cost in the USA.
$300–$1,500 for a short new gas line to one appliance in St. Louis, installed — typically $660. Hooking up a range to an existing line is $130–$460, and a 50+ ft run $910–$4,050. Verified November 2026. Get free St. Louis quotes →
- Short new gas line to one appliance: $300–$1,500 ($660 typical)
- Range hookup on an existing line $130–$460; dryer hookup $100–$360
- Grill or fire pit line $410–$2,050; standby generator line $510–$3,050
- Leak repair $150–$910; permit $50–$350; gas plumbers $75–$200/hr
- Priciest area to work in: Downtown, Grand Center & the Grove; lowest quotes: St. Charles, Clayton & the suburbs
Prices verified November 2026 · Cross-referenced against 35+ American pricing sources · See methodology
Installed prices include pipe, fittings, labor and a pressure test unless the row says otherwise. St. Louis metro, re-verified November 2026. Per-foot rows are for the pipe run only.
| Service | Low | Typical | High |
|---|---|---|---|
| New gas line to one appliance (short run)per line | $300per line | $660 | $1,500 |
| Gas plumber hourly rate/hr | $75/hr | $110 | $200 |
| Service call feeper visit | $75per visit | $150 | $280 |
| Gas range or cooktop hookup (existing line)per job | $130per job | $230 | $460 |
| Gas wall oven hookup (existing line)per job | $150per job | $280 | $610 |
| Gas dryer hookup (existing line)per job | $100per job | $180 | $360 |
| Water heater gas connection (gas side only)per job | $130per job | $250 | $510 |
| Gas stub-out or quick-connect outlet (e.g. for a grill)per outlet | $250per outlet | $410 | $810 |
| Outdoor grill or fire pit gas lineper line | $410per line | $910 | $2,050 |
| Standby generator gas lineper line | $510per line | $1,200 | $3,050 |
| Garage or shop heater gas lineper line | $350per line | $810 | $1,800 |
| New gas line run, 50+ ftper line | $910per line | $1,800 | $4,050 |
| Black iron gas pipe, installedper foot | $15per foot | $22 | $35 |
| CSST flexible gas pipe, installedper foot | $11per foot | $17 | $25 |
| Underground polyethylene gas line with trenchingper foot | $20per foot | $30 | $51 |
| Vented gas fireplace insert or wall heater, installedinstalled | $1,500installed | $3,000 | $5,550 |
| Gas leak detection and repairper job | $150per job | $410 | $910 |
| Gas pressure test and inspectionper job | $75per job | $150 | $410 |
| Gas shutoff valve replacementper valve | $150per valve | $300 | $660 |
| Seismic gas shutoff valve (California and quake zones)installed | $250installed | $510 | $1,000 |
| CSST bonding to the electrical groundper home | $100per home | $200 | $410 |
| Propane to natural gas conversion (2–3 appliances)per home | $710per home | $1,800 | $4,050 |
| Gas meter relocation (utility + plumber)per job | $1,000per job | $2,550 | $4,550 |
| Gas piping permitper job | $50per job | $150 | $350 |
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Prices verified November 2026 · Cross-referenced against 35+ American pricing sources · See methodology
Figures are for the St. Louis metro area. Trip fees can apply on the far edges; tight older homes in Downtown, Grand Center & the Grove cost the most to work in.
Gas line prices across St. Louis
Where you live in the metro changes the labor, not the pipe. Older homes in Downtown, Grand Center & the Grove take the longest; jobs in St. Charles, Clayton & the suburbs tend to come in at or under the city typical.
Downtown, Grand Center & the Grove
- Per line
- $320–$1,700 per line
- Typical job
- $440–$2,300 / grill or fire pit line
The priciest part of the metro for gas work: tight basements, old steel pipe, street parking and building rules all add time. Ask whether patching and the permit are in the price.
North St. Louis
- Per line
- $310–$1,600 per line
- Typical job
- $420–$2,150 / grill or fire pit line
Older homes being updated. Plumbers here often find a line too small for a new range plus a tankless heater, which is where the quote climbs.
South City & Dutchtown
- Per line
- $300–$1,500 per line
- Typical job
- $410–$2,050 / grill or fire pit line
Mostly houses where the gas pipe is easy to reach under the floor or in the attic, so a new branch to an appliance is quick. Quotes cluster around the city typical.
St. Charles, Clayton & the suburbs
- Per line
- $300–$1,600 per line
- Typical job
- $410–$2,150 / grill or fire pit line
Newer homes, often with CSST already in place, so adding a branch is quick. Yard lines to a grill or generator are the big-ticket jobs.
Real-World Gas Line Costs in St. Louis
Here's what common gas line jobs cost in St. Louis in 2026, installed by a licensed pro with fittings and a pressure test.
Range hookup to an existing gas valve — 1–2 hours
Disconnect the old range, fit a new flexible connector, check the shutoff valve, connect, leak-test and light the burners. If there's no gas valve behind the range, it becomes a new-line job at $430–$1,960 with the hookup.
New line to a gas dryer, 15–25 ft — 2–4 hours
A branch off the nearest gas pipe, a shutoff valve, a sediment trap, the hookup and a pressure test. Add $140–$610 if the dryer also needs a new vent to the outside.
Grill or fire pit line across the yard — half a day to a day
Usually buried polyethylene ($20–$51 a foot with trenching), metal risers at each end, a shutoff and a quick-connect at the grill. Concrete or pavers in the way add patching at $100–$410.
Standby generator line — half a day to a day
Generators burn a lot of gas, so the line is usually bigger than a normal branch, and the utility may need to upgrade the meter. Ask whether that fee is in the quote. The permit runs $50–$350.
Gas smell at the range — find and fix the leak
A loose fitting or old connector behind the appliance is the cheap end. A leak inside a wall costs more, and a buried leak with digging costs the most. A service call alone is $75–$280.
How much does gas line installation cost in St. Louis?
A short gas line in St. Louis costs $300 to $1,500. The middle of the market, about $660, buys roughly 10–30 feet of new pipe, a shutoff valve, the hookup fittings and a pressure test by a licensed pro. Access, distance and pipe type push quotes up or down.
Leaks are priced differently: finding and fixing one runs $150–$910, more if the pipe is buried. Re-checked against 35 sources in November 2026.
Gas line prices in St. Louis (2026): new lines, hookups and repairs
A short new line to one appliance costs $300–$1,500, a 50+ ft run $910–$4,050, and a standby generator line $510–$3,050.
| Line on the quote | Low | Typical | High |
|---|---|---|---|
| New gas line to one appliance (short run) | $300 | $660 | $1,500 |
| Gas range or cooktop hookup (existing line) | $130 | $230 | $460 |
| Gas dryer hookup (existing line) | $100 | $180 | $360 |
| Outdoor grill or fire pit gas line | $410 | $910 | $2,050 |
| Standby generator gas line | $510 | $1,200 | $3,050 |
| New gas line run, 50+ ft | $910 | $1,800 | $4,050 |
| Gas leak detection and repair | $150 | $410 | $910 |
| Gas meter relocation (utility + plumber) | $1,000 | $2,550 | $4,550 |
The pipe is the cheap part. On a typical $660 job in St. Louis, most of the bill is a licensed plumber's time, fittings, the shutoff valve and the pressure test. That's why a 10-foot line and a 25-foot line are often priced close together.
What moves a gas line quote in St. Louis:
- Distance — every extra foot of black iron adds about $22 installed; CSST about $17.
- Access — open basements and crawlspaces are quick; finished walls, slabs and attics take longer.
- Indoor vs outdoor — buried yard lines run $20–$51 a foot with trenching.
- Gas load — a generator or tankless heater can need bigger pipe and a utility meter check.
- Permit and test — $50–$350 for the permit; the pressure test should be in the price.
Ask every St. Louis gas plumber for the same five things: the pipe type and length, what's included (valve, hookup, test, permit), any wall or yard patching, the labor warranty, and the start date. Compare those, not the headline price. Get a quote for your gas line work →
Gas Line Cost in St. Louis by Number of Appliances
One appliance on a short run: $300–$1,500. Two or three appliances: $1,200–$3,050. Gas piping for a whole house with four or more appliances: $2,250–$7,600.
Worked example: a St. Louis kitchen remodel that moves a gas range 12 feet and adds a gas dryer in the garage is two short runs in one visit. Expect about $890 for the new range line and hookup plus $180 for the dryer hookup on a shared branch, plus a $150 permit — about $1,220 all in, not two full jobs.
Adding a standby generator to that job brings in a bigger pipe and often a meter check: about $1,200 for the generator line on top. Doing it in the same visit saves a second service fee and a second permit.
St. Louis Gas Line Costs by Pipe and Job Type
| Pipe or job type | Cost | Best for |
|---|---|---|
| Black iron pipe | $15–$35/ft installed | Indoor runs in basements and exposed spots, and the main trunk line. Rigid, very durable, more labor to cut and thread. |
| CSST flexible gas pipe | $11–$25/ft installed | Snaking through walls, floors and attics with few fittings. Must be bonded to the home's electrical ground. |
| Copper tubing (where allowed) | $11–$21/ft installed | Some areas and utilities allow it for gas; many don't. Ask your plumber and inspector before choosing it. |
| Underground polyethylene (PE) | $20–$51/ft installed | Buried yard lines to a grill, pool heater, generator or detached garage. Outdoor and underground only, with a tracer wire. |
| Short run to one appliance (10–30 ft) | $300–$1,500 per line | A new range, dryer, water heater or fireplace near existing gas pipe. |
| Long run, 50+ ft | $910–$4,050 per line | Across the house, up to an attic furnace or out to a detached garage. |
| Outdoor grill or fire pit line | $410–$2,050 per line | Patios and outdoor kitchens. Often a buried PE run with a riser and shutoff. |
| Standby generator line | $510–$3,050 per line | Whole-home backup power. Needs bigger pipe and sometimes a utility meter upgrade. |
| Flexible appliance connector | $100–$360 per hookup | The last few feet from the shutoff valve to a range, dryer or water heater, fitted as part of the hookup. |
Per-foot price vs what you actually pay — the St. Louis gas line bill
Black iron costs $15–$35 a foot installed in St. Louis, but short jobs don't price by the foot. Most plumbers charge a minimum that covers the trip, fittings, a shutoff valve and the pressure test, which is why a 10–30 ft line still lands at $300–$1,500.
Per-foot pricing matters on long runs. A 50+ ft line costs $910–$4,050, and a buried yard line $20–$51 a foot with trenching. On top of that, budget $50–$350 for the permit and any patching of walls or concrete.
What's included in a St. Louis gas line quote (and what costs extra)
A standard installed price covers the new pipe and fittings, a licensed plumber's labor, a shutoff valve at the appliance, a sediment trap where needed, and a pressure and leak test before the gas goes on. The headline price often leaves out:
- Permit and inspection — $50–$350, required for new gas piping in most of the US
- The appliance hookup — $130–$460 for a range, if the quote only covers the line
- Wall, floor or yard patching — drywall repair can add up to $560; a small concrete patch $100–$410
- Meter or utility work — a meter move is $1,000–$4,550; some generator jobs need a utility meter upgrade
Ask whether the pressure test and the permit are in the price; a pro who skips either is cutting a corner that matters.
How far the line runs
Distance is the biggest driver after the minimum charge. A short run is $300–$1,500 in St. Louis; a 50+ ft run $910–$4,050. Putting a new appliance close to existing gas pipe is the easiest saving.
Black iron or CSST
Black iron runs $15–$35 a foot installed and CSST flexible pipe $11–$25. CSST needs fewer fittings through walls but has to be bonded to the electrical ground ($100–$410 if it isn't already).
Basements, crawlspaces and finished walls
An open basement or crawlspace makes a new branch quick. Slab homes, finished ceilings and walls mean drilling, fishing pipe and patching afterward, which adds hours.
Local rules and conditions
Frozen ground in Missouri makes winter trenching slow and costly. Buried lines run $20–$51 a foot with trenching; schedule grill and generator lines for the warm months.
Permit and pressure test
New gas piping is pressure-tested before the gas goes on, and most cities inspect it. In St. Louis budget $50–$350 for the permit; a separate test and inspection visit is $75–$410.
Gas load and pipe size
Every appliance adds to the gas the pipe has to carry. Adding a generator ($510–$3,050) or a tankless water heater can mean bigger pipe from the meter, and sometimes a utility meter upgrade.
Planned vs emergency
A booked job costs $300–$1,500 for a short run; a leak call starts with a $75–$280 service fee, and after-hours work costs more. If you smell gas, leave first and call the utility from outside.
- Bundle the jobs.One visit, one permit and one pressure test can cover a range, a dryer and a grill line. Each extra trip adds a service fee of $75–$280.
- Put appliances near existing pipe.Every foot counts on longer runs: about $22 a foot for black iron and $17 for CSST installed in St. Louis.
- Ask about CSST for runs through finished walls.Flexible pipe needs fewer openings and fittings than threaded iron. Make sure the quote includes bonding to the electrical ground.
- Get an itemized quote.The permit ($50–$350), the pressure test and any patching should be on the quote, not a surprise on the invoice.
- Dig in the right season.Outdoor lines are cheapest when the ground is dry and unfrozen. Call 811 before anyone digs; it's free and marks buried utility lines.
- Get two quotes.Prices for the same short line in St. Louis spread from $300 to $1,500. Two written quotes from licensed pros is the easiest way to land near $660.
St. Louis gas plumbers often quote by phone. Before you pay a deposit, get these in writing:
- Pipe type and length, and the route it takes
- What the price includes: shutoff valve, sediment trap, hookup and connector
- Permit and inspection, and who pulls the permit
- Pressure test before the gas goes on
- Wall, ceiling or yard patching, and who does it
- CSST bonding to the electrical ground, if CSST is used
- For generators and big appliances: pipe size and whether the meter needs an upgrade
- Labor warranty, start date and payment terms
How much does it cost to run a gas line in St. Louis?
$300–$1,500 for a short new line (about 10–30 ft) to one appliance, and $660 is typical. A 50+ ft run costs $910–$4,050.
How much does it cost to hook up a gas stove in St. Louis?
$130–$460 if the gas valve is already behind the range. If you need a new line too, budget about $430–$1,960 for the line and the hookup together.
What does a gas dryer hookup cost in St. Louis?
$100–$360 to connect a dryer to an existing gas valve. A new line to the laundry plus the hookup runs about $400–$1,860.
How much is a gas line to a grill or fire pit in St. Louis?
$410–$2,050, usually a buried line with risers, a shutoff and a quick-connect. If gas pipe is already on the outside wall, a stub-out or quick-connect outlet is $250–$810.
What does a gas line for a standby generator cost in St. Louis?
$510–$3,050 for the gas line alone. Generators need bigger pipe than most appliances, and some need a utility meter upgrade, so ask the gas company early.
How much does gas leak repair cost in St. Louis?
$150–$910 to find and fix a typical leak, plus a service call of $75–$280 at many companies. Buried leaks that need digging cost more. If you smell gas, leave and call the gas utility or 911 from outside.
Do I need a permit for a gas line in St. Louis?
In most cases, yes. New gas piping needs a licensed pro and usually a permit, a pressure test and an inspection. Budget $50–$350 for the permit; your plumber normally pulls it.
How much do gas plumbers charge per hour in St. Louis?
$75–$200/hr, with about $110/hr typical. Many quote short jobs as a flat price instead, and some add a service call fee of $75–$280.
Is CSST or black iron cheaper in St. Louis?
CSST usually costs less installed: $11–$25 a foot against $15–$35 for black iron, because it needs fewer fittings. CSST must be bonded to the home's electrical ground.
What's included in a St. Louis gas line quote?
The pipe, fittings, a shutoff valve, labor and a pressure test. Often extra: the permit ($50–$350), the appliance hookup, and patching walls or concrete.
Prices verified November 2026 · Cross-referenced against 35+ American pricing sources · See methodology
Prices for the St. Louis metro area, November 2026. Outer suburbs may vary.
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