Open 24/7 for emergencies
A plumbing diagnosis visit in Lorton is $49, or $250 after hours, and a person answers (703) 997-9757 day or night.
SwiftPro’s plumbers in Lorton are rated 5.0 stars across 1,130 reviews and work under Virginia Class A contractor license 2705192276. Leak or burst pipe in Lorton, in a newer townhouse or an older Mason Neck house? We find the leak, fix the pipe and quote it in writing first. Finding a hidden leak is $200 to $500, and most water pipe repairs run $450 to $650, from our published price list.
5.0 stars across 1,130 reviews
Part of our plumbing team, with the tools they bring to find a leak and fix the pipe.
Get your price in writing
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Rather talk now? (703) 997-9757
Licensed and insuredVirginia Class A contractor #2705192276
24/7 emergency serviceWe answer day or night, and we will tell you honestly when we can get there.
Our own plumbers, our own trucksNobody here is a subcontractor with a magnet on the door
The price is settled before the workYou see the number in writing before anything is taken apart
What it costs
The same numbers as our pipe repair page, each a range because the house decides where it lands. You hear the number before the work starts.
Plumbing diagnosis visit
$49
Plumbing diagnosis visit, after hours
$250
Leak located (hidden or behind a wall)
$200 to $500
Water pipe repair, one section replaced
$450 to $650
Drywall opened for the repair
Priced in writing before we cut
Prices checked .
Most repairs are one section of pipe: the split or pinhole cut out and a new piece put in. Where the pipe sits decides most of the price. Exposed in a basement ceiling is the low end; inside a finished wall is higher, and we tell you before the drywall comes open.
With Comfort+ membership, any repair is 15% off, and every year includes a plumbing safety inspection that looks at the supply pipe you can see.
What’s different in Lorton
More of Lorton was built since 2000 than in most places we work: over four in ten homes in the ZIP, and in Laurel Hill about six in ten. A house that new is plumbed in PEX or copper, and the pipe itself rarely fails. What leaks is everything attached to it: a fitting at the water heater, the braided supply line under a sink, an ice-maker line behind the fridge, and a hose bib that held a hose all winter.
Lorton and Laurel Hill have a lot of townhouses and condos, about a third of the ZIP’s homes are townhouses and Laurel Hill is a mix of buildings. That brings the shared-wall question: a stain on your ceiling may start in the unit upstairs. Shut every tap and watch the meter. If the dial still moves, the leak is yours. If it stops, the water is next door’s or the building’s, and an association’s maintenance office is where to start.
Newington, along Lorton’s northern edge, is older. Its median home went up in 1981 and nearly half were built from 1980 to 1999, so these are houses where gray polybutylene is possible. A leak at a crimped fitting near the water heater or the main shutoff is the pattern, and one fitting leaking is a reason to look at the others while the wall is open.
Mason Neck, down the peninsula, has a median home from 1973, nearly a quarter of its houses date to before 1960, and every home there is detached. Those are the pipes that age in the ordinary way: copper with pinholes, galvanized in an addition nobody has opened. If your Mason Neck house is on a private well rather than Fairfax Water, there is no meter, and the line from the pressure tank into the house is the one that freezes. Tell us when you call, and we’ll start there.
Neighborhood by neighborhood
Census figures for each place, and the supply pipe that usually goes with houses that age. Median year built and heat count owner-occupied homes only.
| Place | Median home built | Most homes are | Heated with | The supply pipe you usually find |
|---|---|---|---|---|
| Lorton | 2001 | single-family houses, about 4 in 10 | gas, about 7 in 10 | Copper or PEX supply; fittings and hose bibs go first. |
| Newington | 1981 | townhouses, about 6 in 10 | electricity, about 6 in 10 | The polybutylene years: check the supply pipe at the fittings. |
| Laurel Hill | 2002 | single-family houses, about 4 in 10 | gas, about 8 in 10 | Copper or PEX supply; fittings and hose bibs go first. |
| Mason Neck | 1973 | single-family houses, nearly all | electricity, about 6 in 10 | Copper supply, old enough for pinholes. |
By the numbers
From the Census Bureau’s 2020 to 2024 survey. Median year built and heat count owner-occupied homes only.
ZIP 22079 as a whole: every Lorton address. Most of Newington, in the table, has Springfield mail.
What you’d notice
In a newer house the most common leak is the braided supply line to a faucet or the shutoff valve itself. Dry the cabinet, wipe the fittings with a paper towel, and see which one gets wet. A shutoff that drips only when turned is one we replace in a few minutes.
Polybutylene, often stamped PB, went into houses from about 1978 to 1995. It tends to fail at the fittings without much warning, so a drip at one joint is a reason to look at the rest.
A brown ring under a bathroom, or a soft spot in the drywall, is water that’s been finding its way down for a while. A supply pipe leaks all the time; a drain only leaks when somebody runs water upstairs, and that difference tells us where to look first.
Turn everything off and watch the water meter for ten minutes. If the dial or the little leak indicator still moves, water is going somewhere, inside a wall, under a slab or out in the yard.
Before the first hard freeze
A pipe usually bursts in the hours after a cold snap, when the ice inside it thaws and the split starts to run. Five things to do before it gets that cold, then call us if something already looks wrong.
Disconnect every garden hose. A hose left on traps water in the spigot, and that’s the most common split we see. If the spigot has a shutoff inside the house, close it and open the outside tap to drain it.
A kitchen or bathroom sink on an outside wall gets the coldest air in the house. On the coldest nights, open the cabinet doors so room heat reaches the pipes, and let that tap drip.
Close crawl space vents and the garage door for the winter. Pipes that run through a crawl space, a garage ceiling or an unheated room over the garage are the ones that freeze first.
Find it now, before you need it: usually where the water line comes through the basement or crawl space wall, near the meter or the water heater. Make sure it turns. When a pipe bursts, that valve is the difference between a mop and a contractor.
Keep the thermostat at 55 or higher while you’re gone, and ask someone to look in if a cold snap comes. A frozen pipe that thaws with nobody home runs for days.
Find a pipe that’s frozen, or water where it shouldn’t be? Shut the main off and call us at (703) 997-9757. A diagnosis visit is $49, or $250 after hours, and you get the repair price before we cut into anything.
Your pipes, your paperwork
In Fairfax County the homeowner owns the whole sewer lateral, from the house to the county main, including the stretch under the street. Replacing it takes a county plumbing permit, plus a VDOT permit under a state road. Source.
Fairfax Water promises 20 psi at the main and no uniform pressure, and the pressure reducing valve on your side of the meter is yours to buy and keep up. Over 80 psi, the Virginia Residential Code calls for one, and an expansion tank with it. Source.
Our Virginia Class A contractor license, 2705192276, is on the side of the van.
Choosing who fixes it
Questions worth asking anybody who comes out, us included.
In a house this new, the little parts fail before the pipe does. A plumber who tightens or replaces a weeping shutoff while on a bigger repair saves you a second visit.
Anyone can check on the state’s license lookup. Ours is Virginia Class A contractor license, on every van.
A good leak call starts at the meter and the shutoffs, then narrows it down with pressure and moisture readings. The drywall comes open in one spot, not five.
Every repair on our list has a range, and you hear where yours lands before anything is cut. If someone won’t say until the job is done, keep looking.
Two of our crew going over a work order before the day's calls.
From our Google reviews
5.0 stars across 1,130 reviews. Read them on our reviews page.
Technician did a leak test, confirmed there weren’t any large leaks… and topped off the refrigerant. Better than the advice we got from other companies.
Where we work
Out of Chantilly and Ashburn, across six counties. Pick your town for its page.
Questions
Because the pipe is fine; the parts are the age. Supply lines, shutoff valves and water heater connections often fail at fifteen to twenty years. It’s usually a cheap fix, and we’ll show you the part that failed.
It can be. A hose left attached through a cold night can split the spigot behind the siding, and the water goes into the wall instead of the yard. If the spigot drips after you turn it off, or the wall is damp, shut the valve inside and call us.
Shut off the main water valve, then turn off the water heater (gas to pilot, or the breaker for electric). Open a faucet at the lowest point of the house to drain what’s left in the pipes. Then call (703) 997-9757: a person answers day or night, and our emergency plumbing team is on 24/7.
A plumbing diagnosis visit is $49, or $250 after hours. Finding a leak you can’t see is $200 to $500, and most water pipe repairs run $450 to $650. You get the number before we start.
Ready when you are
Shut off the main, then call, or send the form at the top. You get the price before the work, and if it can wait until morning, we’ll tell you that too.
SwiftPro Heating, Cooling & Plumbing
4230 Lafayette Center Dr N, Chantilly, VA 20151
44679 Endicott Dr, Suite 211, Ashburn, VA 20147
SwiftPro Plumber & Water Heaters
4200 Lafayette Center Dr, Suite N, Chantilly, VA 20151
Virginia Class A contractor license #2705192276
SwiftPro Heating, Cooling & Plumbing is a licensed, BBB Accredited (A rating), independently owned heating, cooling and plumbing company in Chantilly, serving Lorton and the rest of Northern Virginia. Virginia contractor license #2705192276. 5.0 stars across 1,130 reviews on Google, Angi, Yelp, the BBB and Facebook. SwiftPro maintains a dedicated HVAC team and a dedicated plumbing team.
From SwiftPro Heating, Cooling & Plumbing in Chantilly. Housing figures are the Census Bureau’s American Community Survey, 2020 to 2024, for each place named; permit, water and sewer facts link to each office’s own page and were checked in September and October 2026.