A floor drain is your early warning
The basement floor drain is the lowest opening in the house. If it gurgles or shows a dark ring after the washer runs, the line is already partly blocked, and the clearing is simpler now than after a backup.
Dunn Loring, Virginia
Drain cleaning in Dunn Loring.
For drain cleaning in Dunn Loring, one clogged fixture drain is $200 to $800. Call SwiftPro, rated 5.0 stars across 1,130 reviews, at (703) 997-9757, 24 hours a day, 7 days a week.
SwiftPro’s plumbers in Dunn Loring are rated 5.0 stars across 1,130 reviews and work under Virginia Class A contractor license 2705192276. Drain cleaning in Dunn Loring, where nine in ten houses have a basement and the lowest drain in the house is where a clog shows first. A main line backing up into the house is $550 to $1,650. Adding a camera look while we’re there is $89.
- Priced before the machine runs
- Our own licensed plumbers
- Camera when it’s worth it
5.0 stars across 1,130 reviews
Our plumbing team with the drain machine, the jetter and the sewer camera.
Get your price in writing
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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
What drain cleaning costs in Dunn Loring.
Where the clog sits decides the price. A sink, tub or shower drain is one fixture. When every drain in the house is slow or water comes up the lowest one, it’s the main line, and that’s a bigger machine and a longer run.
Drain cleaning, one fixture
$200 to $800
Main sewer line cleaning
$550 to $1,650
Sewer camera inspection, added to a visit
$89
Prices checked .
If the main line clogs again inside a year, or the cable comes back with roots, a camera look for $89 on the same visit tells you whether it’s a clog or a broken pipe. We show you the picture either way.
Comfort+ membership is $199 a year for four visits: a dryer vent cleaning, a water heater flush with a sewer camera inspection, a heating maintenance visit and a cooling maintenance visit.
What’s different in Dunn Loring
Dunn Loring’s drain trouble lives in the basement, because that is where the plumbing is.
Almost every Dunn Loring home is a house, over nine in ten, and Fairfax County’s tax records show a full basement under about nine in ten of them. Roughly half are daylight basements, with a door to the yard. More than eight in ten of the houses have a finished room down there. The result is that the lowest drains in the neighborhood carry a lot: a basement bath, a laundry, a wet bar or a second kitchen, all at the bottom of the line.
That decides what a clog looks like here. The bath on the main floor drains fine, the one downstairs gurgles, and the floor drain beside the water heater rises when the washer empties. It is the same event, a partial blockage in the main line, noticed first at the lowest opening. Clear it the first time the basement tub is slow, not the first time it comes up the floor drain.
The houses split three ways. About a quarter went up before 1980, usually with cast iron under the basement floor, which scales on the inside. Half are from the 1980s and 90s, on plastic, and about a fifth were built after 2000. A finished basement bath added in the 1990s is plastic tied into a 1960s main, so the two pipes meet somewhere behind the wall. We ask where.
On the west edge, a block of Dunn Loring homes is on the Town of Vienna sewer, and there the owner agrees to maintain the connection from the Town’s main to the house. A line cleared from your cleanout reaches that connection, so a clog there is yours to clear, and we’ll say if what we find looks like a problem past it.
By the numbers
Dunn Loring houses, by the numbers
From the Census Bureau’s 2020 to 2024 survey, owner-occupied homes unless it says otherwise.
Dunn Loring
ZIP 22027 as a whole: every Dunn Loring address. The Dunn Loring Census place is bigger: about three in four of its homes have Vienna mail.
- Median home built1991 Census
- Built before 1980about 3 in 10 Census
- Built since 2000about 2 in 10 Census
- Most homes aresingle-family houses, about 9 in 10 Census
- Heated withgas, about 7 in 10 Census
- Rentedhardly any Census
- Houses from the 80s and 90s mostly drain through PVC, so a main line clog there is usually what went down it, or a low spot in the yard.
Which clog it is
One slow drain, or the whole house backing up in Dunn Loring.
Only one sink or tub is slow
If the kitchen sink backs up but the bathroom drains fine, the clog is in that branch, usually grease or food in the kitchen, hair and soap in a tub. That’s a one-fixture clearing.
Water comes up the lowest drain
When the washer drains and water shows up in a basement shower or floor drain, or flushing a toilet bubbles the tub, the clog is past the branches in the main line. Stop running water until it’s cleared.
Need drain cleaning in Dunn Loring?
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Choosing who clears it
How to pick the best plumber for drain cleaning in Dunn Loring.
Questions to ask anybody who offers to clear a drain, us included.
Do they check the basement floor drain, too?
When the main line is clogged, the lowest drain shows it first. A plumber who clears a bathroom sink and never looks at the floor drain may leave the real clog.
Do they price it before they run the cable?
You should hear whether it’s a one-drain clearing or the main line, and the price for it, before anybody feeds a cable in. A price that shows up after the work is a bad sign.
Do they push chemicals or a new line on the first visit?
A clear drain doesn’t need a bottle of anything, and a single clog is not a reason to dig. If someone jumps to replacing the sewer line without a camera picture, get a second look.
Two of our crew going over a work order before the day's calls.
From our Google reviews
What our customers say.
5.0 stars across 1,130 reviews. Read them on our reviews page.
. SwiftPro was able to get a tech out same day I called with an issues and had a the same guy come back to do the repairs. Jamie Lazo was awesome and did exceptional work. Glad to have my AC unit back up and running!
- 5.0stars across 1,130 reviewsHow we count them
- ABBB Accredited, A ratingCheck it on bbb.org
- 2026Voted a Nextdoor Neighborhood Faves winner two years running: 2026 in 30 Northern Virginia neighborhoods, 2025 in Emerald Chase (Herndon) and Hunters Run (Chantilly)See it on Nextdoor
- #1BusinessRate Best of 2026: the top-ranked heating contractor in Fairfax, VirginiaSee our BusinessRate score
- Class AVirginia contractor, license #2705192276Look it up with DPOR
Where we work
Drain cleaning in every Northern Virginia town we serve
Next door to Dunn Loring: Vienna, Falls Church, McLean, Annandale and Oakton.
Fairfax County
Arlington County
Loudoun County
Prince William County
Fauquier County
Stafford County
Every town on one page
Questions
Drain questions from Dunn Loring.
My Dunn Loring basement bathroom drains slowly but the upstairs ones are fine. Why?
The basement bath sits lowest on the line, so it feels any slowdown in the main first. Run the upstairs sinks while the tub drains. If it gets worse, it’s the main line.
Can you clear a basement floor drain?
Yes. Most have a cleanout cap or a removable strainer, and the cable goes in through that. We’ll also check the lines it connects to.
How much does drain cleaning cost in Dunn Loring?
One clogged sink, tub or shower drain is $200 to $800. A main line backing up into the house is $550 to $1,650. Where the clog is and how far down it sits moves the number inside that range.
Should I pour a drain cleaner in first?
Better not. The strong ones can sit in the trap, damage older pipe, and splash back on whoever opens the drain next. Try a plunger on a sink or tub, and if that doesn’t move it, call.
Ready when you are
Get the water moving again.
Call, or send the form at the top. You get the price in writing before the machine runs, and if it’s a pipe problem and not a clog, we’ll show you.
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 Dunn Loring 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.