LEARNING CENTER GUIDE
How much does gas line installation cost in Louisville? (Stove, dryer, grill, firepit, generator)
The short answer
Honest answer: there’s no set price for a gas line, because pricing this job before we’ve seen it would be a guess dressed up as a quote. What actually moves the number is the length of the run, which appliance you’re feeding, where the existing gas piping already sits so we know what’s realistic to tap into, how easy that spot is to reach, and how old the house is. A short tap off an accessible line in an open basement to feed a kitchen range is one kind of job. A long run through finished walls and floors, out across the yard to a firepit or a stand-by generator, is a different job entirely, even though both start with the same two words: gas line. Anyone who quotes gas work sight unseen is guessing, and that’s not something we’re willing to do on a fuel line. The real number comes out of a walk-through, and getting one started only takes a couple of minutes.
Every week somebody asks us a version of the same question: how much to run gas to the new range, the dryer, a grill on the patio, a firepit out back, or a stand-by generator. We understand why a flat number would be easier to hear. We also know printing one would be dishonest, because two gas line jobs that sound identical over the phone can be entirely different once we’re standing in the basement or walking the yard. So this is the one cost article on our site where we’re not going to hand you a range and call it done. Instead, here’s exactly what makes a gas line job cheap, what makes it expensive, and why a plumber genuinely has to see the space before either of us can talk numbers.
What actually drives the price of a gas line
Five things move the number, and the appliance itself is only one of them.
- How long the run has to be A gas line job is priced in feet of pipe and hours of labor, not a flat rate per appliance. Ten feet from an existing branch to a range on the other side of the same wall is a short day. Sixty feet from the meter, through the house, and out to a firepit at the back of the yard is a different scope entirely, even for the same size of pipe.
- What you’re actually connecting to A gas grill or a firepit draws a lot less gas than a whole-house stand-by generator does. The bigger the appliance’s draw, the more likely the branch feeding it needs a larger pipe, and in some cases the whole trunk line coming off the meter needs to be sized up to carry it. A stove or a dryer is usually the smallest ask on this list.
- Where the existing gas piping already runs Every gas line job starts from somewhere: a branch already feeding the water heater, the furnace, or a range. If the new appliance sits close to one of those, we’re extending an existing branch. If it’s on the far side of the house, or outside, we’re running a whole new branch back to a point on the trunk line that can actually support it, and that’s simply more pipe.
- How hard the space is to reach An open, unfinished basement or crawl space with the joists exposed is the easy version of this job. A finished basement, a slab floor, or an exterior wall means opening drywall, coring concrete, or trenching through the yard to get the pipe where it needs to go, and closing all of that back up afterward is real labor, not an afterthought.
- The age of the home Older Louisville homes were often plumbed for a stove and a water heater and not much else, on a trunk line sized for exactly that load. Adding a firepit or a generator to a house like that can mean upsizing the trunk itself, not just extending a branch off it. A newer home built with today’s appliance mix in mind is more likely to already have the room.
The five appliances people ask about most
- Kitchen range or cooktop Usually the simplest of the five, because the kitchen is often already close to an existing branch or sits back-to-back with a basement that has gas running through it. Short runs and easy access are the norm here, which is why it’s usually the least involved job on this list.
- Gas dryer Laundry rooms are frequently near the water heater or furnace, which are already on gas, so the tie-in is often close by too. The wrinkle is venting and clearance around the appliance itself, which we check at the same time as the gas connection.
- Outdoor grill This one crosses to the outside of the house, so it needs a wall penetration and usually some yard work to get the line to the patio. It’s a small appliance load, but it’s the first item on this list that leaves the house.
- Firepit Similar to a grill, but a firepit is usually farther from the house than a patio grill is, which means more trenching and more yard restoration when the digging is done. Code also wants a shutoff valve, or a shutoff key, that stays easy to reach.
- Stand-by generator Typically the biggest single draw on this list, sized to run a big share of the house during an outage. That draw is exactly why the pipe-sizing question from above matters most here, and why a generator is the appliance most likely to need us to look at the trunk line, not just add a branch.
The safety and permit side of a new gas line
New gas piping isn’t a job you pull off a shelf and self-install, and it isn’t one we’ll quote without seeing the meter and the route the line has to take. The gas utility, LG&E, owns everything up to and including the meter. Everything past it, which is where a new branch to your stove, dryer, grill, firepit, or generator lives, is the homeowner’s piping, and that’s licensed plumbing and gas-fitting work. Kentucky also requires a permit for new gas piping under 815 KAR 20:050. Unlike the flat fee that applies to a single water heater swap, a new gas line’s permit gets scoped to the actual work, so we won’t print a number here that isn’t tied to a real job. Once the line’s in, it has to hold a pressure test and pass inspection before gas ever reaches the new appliance, and if any part of the run goes outdoors, Kentucky 811 marks the buried utilities in the yard for free, which matters because your own gas service line is one of the things buried out there.
Two calls that happen before any digging
A new gas line to an outdoor appliance touches two systems most homeowners never think about until the job is underway:
- LG&E and the meter LG&E’s territory stops at the meter. We don’t touch their equipment, and they don’t run your house piping. Knowing exactly where that line is drawn is part of scoping the job correctly from the start.
- Kentucky 811 and the yard Before anyone digs a trench for a firepit or a generator line, Kentucky 811 has to mark the buried utilities, gas included, and the law wants that call at least two business days ahead. It’s a free call, and skipping it is how a fence post or a shovel finds a line the hard way.
How we actually price it
We price gas line work per job, not per appliance, because the five factors above interact in ways a phone call can’t capture. Two homes that both want a firepit line can land in completely different scopes once we see whether the basement is open or finished, how far the yard run actually is, and what the existing piping can already support. That’s why we walk the space before we put a number in front of you, and why we’d rather tell you honestly that we can’t price it sight unseen than hand you a range that doesn’t hold up once we’re standing there. If you’re weighing whether to add gas at all, say for a water heater switch instead of a stove or grill, our gas vs electric water heater guide covers that specific decision. For everything else on this list, the fastest way to get a real number is to start the walk-through. Ask Goldie can get that scheduled in a couple of minutes.
Common questions we get
Do I need a permit to add a new gas line in Louisville?
Yes. Kentucky requires a permit for new gas piping under 815 KAR 20:050, separate from the flat fee that applies to a single water heater swap. A new line gets scoped to the actual work, and the piping has to hold a pressure test and pass inspection before gas reaches the new appliance.
Can I run a gas line myself or hire a handyman to do it?
No. Gas piping is licensed plumbing and gas-fitting work in Kentucky, and it has to be pressure-tested and inspected before it’s put into service. Beyond the legal side, a mistake on a fuel line isn’t the kind of mistake you get to learn from twice, which is exactly why we don’t cut corners here.
Why does a firepit or generator line usually cost more than a stove or dryer line?
Distance and draw. A stove or dryer is usually close to gas that’s already there. A firepit or generator sits farther from the house, often means trenching through the yard, and a generator in particular draws enough gas that the pipe, or even the trunk line, may need to be sized up to carry it.
How do I get an actual price for my house?
Have us walk the space instead of guessing over the phone. We’ll look at where your existing gas piping runs, how far the new appliance actually sits from it, how accessible the route is, and how old the system is, then give you a real number based on your house instead of a generic one.
The next questions to ask
Ready to get a real number for your gas line?
Ask Goldie walks you through the appliance, the route, and what’s already there, and gets a walk-through scheduled fast. Try it at goldenplumbingky.com/instant-estimate/