Washington Gas runs gas mains in Leesburg, so a gas smell at a home on its system means leaving first and then calling 911 and 844-WASHGAS (844-927-4427), option 1, from outside. Repairs and new lines past the meter need Loudoun County permits, after a Town zoning step. Call the number on this page to be connected with a local plumber in Leesburg.

What happens when you call
The number on this page links you to an independent plumber who takes gas work in Leesburg. Expect a few questions up front. Is this a leak, a problem appliance or a new line? Which appliance, and how far is it from the meter? Is the house in the historic downtown or one of the newer neighborhoods? If a smell has already been reported and the utility shut off a valve or tagged an appliance, mention that too.
For a leak, the plumber typically shuts the gas, locates the problem with a detector and soap solution, repairs the joint or section, then tests the line and relights each appliance. New piping adds a pressure test before anything is connected, and an inspection where the permit calls for one.
What sets the cost
- The length and route of the run, especially through finished basements or older plaster walls
- Whether the existing line can carry another appliance
- Pipe material, valves, sediment traps and connectors
- Town zoning and Loudoun County permit steps
- Wall, ceiling or yard restoration afterward
Leesburg specifics
Leesburg is the Loudoun County seat, founded in 1758, and today a commuter town about 33 miles from Washington. Its housing runs from historic downtown buildings to subdivisions built mostly in the last few decades; the median home dates to 1993. Washington Gas operates mains downtown around Market and King streets. Service may not reach every address, and some homes are all-electric, so check your bill.
Permits work in two steps. All building permits inside the Town of Leesburg are issued by Loudoun County's Department of Building and Development, but the Town requires its own Zoning Permit first. The Town also advises residents to confirm with the County, at 703.777.0220, whether building or trade permits apply to a project. A plumber who works in Leesburg regularly will know the order.
Downtown houses can carry gas piping that has been altered over many decades, while newer houses usually have black steel trunks with flexible tubing branches. Both can run short of capacity when a big appliance is added.
Before the plumber arrives
- Find the meter and the main shutoff, and clear a path to them
- Note the make, model and BTU rating of the new appliance
- Clear the area around the furnace, water heater or range
- Check that carbon monoxide alarms work
- Have any HOA approval ready for exterior lines
Gas Line Services questions in Leesburg
Does new gas piping need a permit here?
How do I know which gas company serves my address?
Why is new gas pipe pressure tested before it goes into use?
Can an unused gas line be capped when an appliance is removed?
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