Sewer Line Replacement and Trenchless Options in Winston-Salem

Which part of the pipe has failed?

A house sewer has two owners. The main under the street belongs to the utility, and the service line that runs from your house out to that main is the part you are usually dealing with. In Winston-Salem and most of Forsyth County that utility is Winston-Salem/Forsyth County Utilities, which cleans the section of a service line inside the public right-of-way at no charge, but only for a qualifying backup: a first-time event caused by a blockage in the city main, not in your line. If there is a courtesy cleanout at the edge of the right-of-way, city crews will clean and repair that cleanout when needed.

Everything between that boundary and your foundation is yours to deal with. Before any talk of replacement, a plumber should run a video inspection of the lateral and mark where each defect sits. Distance readings from the camera tell you whether the trouble is on your side, near the property line, or in the right-of-way, and that answer changes who pays and which method makes sense.

Replace the whole run, or fix one spot?

A single offset joint or one crushed section ten feet from the house is often a point repair: dig one hole, cut out the bad piece, couple in new pipe. Replacement is the better call when the camera finds trouble repeating along the line, such as roots at every joint, cracked clay, scaling and holes in old cast iron, or a long sag that holds water. Patching one defect in a pipe that is failing everywhere tends to buy a year or two before the next dig. If you are still at the stage of recurring clogs with no visible damage, start with repair options for a damaged line instead.

How do the three replacement methods differ?

Why the existing pipe matters so much

Both trenchless methods use the old line as a guide. If a section has caved in, the bursting head or liner has nothing to follow, and that stretch has to be dug anyway. The same goes for a deep belly: a liner simply copies the sag, so the low spot keeps collecting paper and grease. That is why a fresh camera run, done after the line is cleared, should come before any trenchless quote.

What does sewer line replacement cost in 2026?

National figures from Angi's 2026 data give a useful starting range. Winston-Salem-area prices depend on depth, length, access and soil, so treat these as a reference point and get local written quotes.

The per-foot prices for digging and trenchless overlap, so the real difference shows up in restoration. A 60-foot lateral under open grass may cost less to trench. The same line running under a paved driveway, a patio or a big oak often comes out ahead with bursting or lining once you add back concrete and landscaping. For a wider look at how plumbing work is priced here, see what plumbing jobs typically cost in Winston-Salem.

When is trenchless the wrong choice?

• The line has collapsed. No path means no pull or liner through that section.
• The slope is wrong. A belly or a line that was laid too flat needs to be relaid at proper grade, which means digging.
• The route needs to change. Adding a bathroom, moving a tie-in, or abandoning a line under an addition calls for new pipe on a new path.
• There is no access. Lining needs a usable cleanout, and bursting needs room for two pits. Some crawl-space homes need a new cleanout installed first.
• Other utilities sit too close. Bursting pushes the ground outward, so a gas or water line running right alongside may rule it out.

A backup is happening now. What does the city expect?

If sewage is coming up inside a home served by Winston-Salem/Forsyth County Utilities, call CityLink at 311 or 336-727-8000 before you start cleanup. The utility says skipping that call can affect a later claim, and it asks people not to use the online 311 form for a backup. If there is no water standing in the right-of-way cleanout, or no cleanout can be found, the blockage is treated as private and you will need a plumber.

The utility's guidance for plumbers is specific. The blockage has to be pushed all the way to the main using root machines or jet hoses, not just cleared to the cleanout, and the plumber should run a camera through the line to document any damage within the right-of-way. That footage goes to a Field Operations supervisor. If no damage is found in the right-of-way, the utility does not reimburse the camera work. If you are deciding how that clearing should be done, jetting compared with snaking covers the tradeoffs, and hydro jetting service in the city is one place to start.

The Good Neighbor Policy

When a backup starts in the city's main, the utility's Good Neighbor Policy may pay up to $30,000 for damaged property and reasonable temporary relocation. Conditions apply: it has to be the first main-line backup at the property, it cannot be caused by misuse of private plumbing, the sewer account has to be in good standing, and the owner must install a backwater valve at their own expense before a claim is paid. North Carolina's plumbing code ties the need for that valve to the building's elevation compared with the nearest upstream manhole. If your line is being replaced anyway, ask whether a backwater valve belongs in the new work.

Permits and digging rules

Sewer replacement on private property is permitted and inspected work. In Winston-Salem and unincorporated Forsyth County, plus Bethania, Clemmons, Lewisville, Rural Hall, Tobaccoville and Walkertown, permits go through the joint City-County Inspections Division (336-727-2624), which takes applications electronically. Kernersville, the Davie County towns, and communities in Davidson and Rowan counties have their own arrangements, so confirm who issues the permit before work begins. Homeowners in places like Kernersville and Salisbury, where Salisbury-Rowan Utilities runs the sewer, should ask their own utility how it splits responsibility for the lateral.

Before any pit or trench, someone must contact NC811 at least three working days ahead. Marking is free, but it covers publicly owned lines only. A private gas line to a detached garage, a sprinkler line or a buried cable you installed yourself will not be flagged.

Why older neighborhoods see this more often

Census data compiled by Point2Homes puts Winston-Salem's median home construction year at 1986, with about 43 percent of homes built before 1980. In Salisbury the median is 1976 and about 55 percent predate 1980. Homes of that age often still have their original lateral, and decades of tree roots and settling are the usual reason a line that drained fine for years starts backing up. Older streets in the city and in towns like Clemmons with large shade trees are where repeated root clogs tend to show up.

What should you ask before signing?

1. Can I see the camera footage and the footage after cleaning, with distances marked?
2. Which method are you proposing, and why not the others?
3. How many feet are included, and where are the entry and exit points?
4. What restoration is included: sod, seed, concrete, asphalt?
5. Who pulls the permit and schedules the inspection?
6. Will you run a camera through the finished line and give me the video?
7. Is a cleanout or a backwater valve part of the job, and if not, should it be?
8. What warranty applies to the pipe or liner, and to the workmanship?

Getting two quotes based on the same camera footage is the simplest way to compare methods fairly. If one contractor recommends lining and another recommends digging, ask each to explain what they saw on the video that drove the choice. When you are ready, you can line up sewer line replacement in Winston-Salem or check the towns this service covers.