Quick answer: A typical backyard gas line in East Tennessee starts around $2,000 and usually lands between $2,000 and $6,000. A longer run, a meter upgrade, more than one line, or more appliances push it higher, sometimes well past $6,000.
Natural gas from the street is usually the better long term choice when it is available. Propane works when there is no natural gas service, or when you want a tank for a grill or fire feature.
We coordinate the gas piping with licensed trades as part of outdoor kitchens, fire pits, outdoor fireplaces, and pool heating. The gas line is its own cost, separate from the grill, fire feature, or heater.
What you are paying for
Running gas out back is not a flat fee. The price follows the work:
- Distance from the meter or tank to the appliance. A short run to a patio grill costs less than a long run across the yard to a pool heater.
- How many appliances share the system. One correctly sized line can feed a grill, a fire pit, and a heater. Extra branches and larger pipe raise the price.
- Meter upgrades. If the house meter cannot carry the new load, the utility or a plumber has to upgrade it.
- Trenching and repair. Digging under a finished patio, driveway, or lawn adds labor and patch work.
- Permits and inspections. Rules differ by city and county. We confirm what your address needs before work starts.
- Natural gas or propane hardware. Regulators, shutoffs, tanks, and conversion kits differ by fuel.
That is why a few hundred dollars is not a real price for a proper outdoor living install. A complete, permitted line sized for real appliances starts in the thousands.
Typical cost ranges
| Scope | Typical installed range |
|---|---|
| Short run to one appliance (grill or fire pit near the house) | About $2,000 to $4,000 |
| Longer run, or a line sized for more than one appliance | About $4,000 to $6,000 |
| Long run to a pool heater, a meter upgrade, multiple lines, or tricky routing | $6,000 and up |
These are Morales Outdoor Living project ranges for Knoxville and the surrounding area. Your quote follows the real path, load, and site.
Natural gas or propane
Natural gas
• Steady supply from the utility. No tank refills. • Usually cheaper to run if you use it a lot (pool heater evenings, frequent grilling). • Needs service near the house and enough meter capacity. • Best when you already have natural gas and plan more than one gas appliance.
Propane
• Works anywhere a tank can sit safely. • Good when natural gas is not available, or for one grill or fire feature. • You manage tank size, placement, and refills. • Costs climb fast if you heat a pool with propane often.
Simple rule: if natural gas reaches your property and the meter can carry the load, we usually point clients that way for an outdoor kitchen or pool heater. Propane stays a solid choice for freestanding or remote features.
One line for the grill, fire pit, and heater
You do not need three separate gas projects. One correctly sized main line can serve a grill or outdoor kitchen, a gas fire pit or fireplace, and a gas pool heater.
Plan the path and the load once, before the patio or pool deck is finished. Adding gas after the hardscape is down almost always costs more, because of saw cutting, trenching under pavers, and repair.
When you price an outdoor kitchen, a fire feature, or pool heat, ask for the gas line as its own line item so the number is clear.
What we handle and what the gas trade handles
Morales designs the outdoor living layout and coordinates the gas piping with licensed plumbers and, when needed, the utility. Utility and meter work can't be priced exactly until the load is calculated, so your quote carries an allowance for it based on what that work has actually cost on our past jobs. If the final bill comes in under the allowance, you get the difference back, and if it runs over, you pay the difference.
You get one project conversation, not three vendors guessing who owns the trench.
Common questions
How much does it cost to run a gas line for an outdoor grill in Knoxville? Most short patio runs land around $2,000 to $4,000. Distance, trenching under finished hardscape, and whether the grill shares a line with other appliances move the number.
Is propane cheaper than natural gas? Up front, propane can look simpler when there is no natural gas service. Over time, natural gas is usually cheaper to run for frequent use, especially a pool heater. We compare both for your site.
Can one gas line run a grill and a fire pit? Yes, when the pipe is sized for the combined load and the layout is planned that way from the start.
Does a gas pool heater need a bigger line? Often yes. Pool heaters use a lot of gas. Expect a longer run and a higher range, often $6,000 and up when the heater sits far from the meter.
Do I need a permit? Usually yes for a permanent outdoor gas line. Rules differ by city and county. We confirm before anyone digs.
Will the gas line show up in my outdoor kitchen or pool quote? Yes. We show gas as its own clear line so you can see it next to the kitchen, fire feature, or heater.
Next step
Planning an outdoor kitchen, fire feature, or pool in Knoxville or East Tennessee? Book a visit to your property and we'll size the gas line as part of the whole project, from the meter or tank to every appliance, before anyone digs. We don't take stand alone gas line jobs, so if that's all you need, a gas or HVAC company is your best call.
Christopher Morales
Co-founder of Morales Outdoor Living. 16+ years designing and building pools, patios, decks, and complete outdoor living spaces across East Tennessee. TN License #77919.
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