How much does a plumber charge to unclog a drain in Virginia?

No primary source publishes a standard Virginia price for unclogging a drain, and rates vary from one region and one company to the next. What you can control is knowing what goes into the bill, so you can compare quotes and avoid paying for more than the job needs. Four things set the price: where the clog is, how the plumber reaches it, what equipment it takes, and when the visit happens.

What drives the bill

Where the clog is. A clog in one sink, tub or toilet usually sits in the trap or the first few feet of pipe and clears quickly with a hand tool. A clog in the main line or the sewer lateral (the pipe from the house to the public sewer) takes longer and needs a powered drain machine. The pattern tells you which: in Fairfax County, if the backup occurs only when fixtures such as a toilet, tub, washer or sinks are used, it is possible that you need a plumber^[2]. A clog affecting several fixtures points to the shared drain line, which costs more to reach than a single trap.

How the plumber gets in. Fairfax County notes that most laterals can be cleaned by accessing the sanitary cleanout.^[3] A cleanout usually is 4 inches in diameter with a tight-fitting steel or plastic cap^[4], often outside near the foundation or toward the street. Without one, a plumber may have to pull a toilet or work through a roof vent, which adds labor. Spotsylvania County says a home without one may want to add one, because it gives you or your plumber quick access to stop costly sewage backups.^[4]

The equipment. A hand auger costs less to run than a large drain machine. A camera inspection is a separate line item. For a line that keeps clogging, Fairfax County's guidance is that "The best way to assess the condition of a lateral is by Closed Circuit Television Video (CCTV) examination"^[3], and the camera tells you whether you are paying for cleaning or facing a repair.

Timing. Evening, weekend and holiday visits usually cost more than a booked weekday visit. If only one fixture is affected and nothing is overflowing, stop using it and book a normal visit.

What is in the drain. If you have already poured in a chemical opener, the plumber has to work more carefully. Say which product you used when you call.

When the clog is not yours to pay for

Before you call a plumber for a backup that affects the whole house, find out whether the problem is in the public sewer. In Fairfax County, if sewage backs up when nothing in the house is in use, there may be a problem in the county main line, and the county sends someone to check it.^[2] If the county line is working normally, the private lateral is the likely cause and you will be advised to contact a plumber.^[2] The City of Salem suggests contacting neighbors to tell whether the blockage is inside the building or on the sewer main.^[5]

The private part of the line is usually the owner's cost. In Salem, the building owner is responsible for maintenance and repair of the sewer lateral on the owner's private property.^[5] Spotsylvania County says the property owner is responsible for all maintenance, operation, cleaning, repair, and reconstruction of the upper (private) sewer lateral from the house to the property line.^[4] Ask your own utility where its responsibility starts. For more on that split, see who is responsible for the sewer line between the house and the street.

A cleanout at the property line can change that line in some places. When we checked on October 26, 2026, the City of Colonial Heights' utilities department would install a cleanout at the property line on a single-family home for a one-time fee of $200.00.^[6] With an approved cleanout at the property line, the city claims ownership of the lateral from that cleanout to the main and is responsible for maintenance and repairs; without one, the owner is responsible from the building to the main.^[6]

When a clog turns into a repair

Repeated clogs in the main line, roots, or a camera showing a broken pipe move the job from cleaning to repair, which is priced differently. In Fairfax County, a repair or replacement of a lateral on private property needs a plumbing permit from the county.^[3] Ask for the camera footage and a written repair quote before agreeing to digging.

Damage is a separate cost again. Salem's water department warns: "Most homeowners' insurance will not pay for damage unless specific sewer backup coverage has been added to the policy."^[5]

Getting a fair quote

Plumbing in Virginia is licensed work: Under Code of Virginia § 54.1-1100, the Board for Contractors requires a master tradesmen licence as a condition of licensure for plumbing contractors.^[9] Check the business on DPOR's licence lookup.^[8] The Board for Contractors reminds homeowners that "Virginia law requires all licensed contractors to provide a written contract for residential work"^[7], and as a rule of thumb suggests an initial deposit of no more than 10% of the total price or $1,000, whichever is less.^[7]

Ask each plumber the same questions: Is there a trip or diagnostic charge, and does it come off the job? Is the price flat or hourly? Which tool will they use? Is a camera inspection included or extra? What happens if the line clears and clogs again within a few weeks?

Before you call, try the cheap fix: plunge 20 to 30 times with the other bowl or the overflow sealed.^[1] See how to unclog a kitchen sink without chemicals for the full method.

Stop and call a pro if

• Several drains are slow at once, or water rises in one fixture when another is used.
• Sewage comes up through a floor drain or the lowest fixture in the house.
• The same line has clogged more than once in a few months.
• You have already used a chemical opener and the drain is still blocked.

For related answers, read what drain cleaning costs in Virginia, why several drains clog at once and when a clog needs a plumber, or browse plumbing repair answers and plumbers in Blacksburg.

Want real prices? Describe the clog once and licensed local plumbers quote it.