How Much Does Sewer Line Replacement Cost in Michigan?

National cost guides put the average sewer line replacement at about $3,300 to $3,500. Most jobs in those guides land between about $1,400 and $5,800. Priced by length, they run about $50 to $250 per linear foot. At those rates, a 50-foot sewer lateral comes to about $2,500 to $12,500 before permits and restoration.

Metro Detroit adds a few local lines to that math. In the towns we checked, the whole lateral is the homeowner’s, often including the part under the street. Older homes may still have a clay sewer lead.

These are market numbers, not our price list. Delpres Services handles sewer line replacement and repair by open trench across Metro Detroit, and every quote comes in writing.

What does sewer line replacement cost, part by part?

National cost guides split the job into parts. The last row is a Macomb County city’s own figure.

The averages blend every job the guides track. A short repair under a lawn and a deep run under a driveway land in the same pool.

Warren’s sheet adds a second number. Yearly root cutting by a plumber, about $100 to $200, may cost less than a new line.

Who pays for the sewer lateral in Macomb County?

Four Macomb County communities we checked put the lateral on the homeowner, from the house to the public main. Local sewer departments, Harrison Township’s among them, call it the sewer lead.

Harrison Township puts any blockage in the sewer lead, from the building up to the main, on the homeowner. St. Clair Shores puts the line from the home to the city main on the homeowner. That main may be across the street.

Warren says owners maintain the service line and its connection to the main. In Clinton Township, the lateral is generally a 6-inch pipe, installed and maintained by the homeowner.

That reach under the street drives cost. A trench may cross a sidewalk or the road, and each surface has to go back. In Harrison Township, the owner next to a public sidewalk is responsible for its repair. Ask your water and sewer department where its part of the system starts.

What drives the price of a sewer lateral replacement?

Most of the price comes from these parts of the job.

• Length and depth. Every foot adds pipe and digging. One national guide says the rate can climb sharply when the line sits deeper than normal. Our excavation work uses mini-excavators for tight residential access and full-size equipment for deep digs.
• What sits on top. A trench under a driveway means a concrete or asphalt patch on top of the sewer work. A trench under lawn needs topsoil and seed or sod.
• Where the main sits. A main under the street means a longer run and a crossing of public pavement. In parts of Warren, mains run in easements along the back of the lot instead.
• The ground. Federal soil survey data rate about three in four acres of Macomb County as somewhat poorly to very poorly drained. On about as much ground, the water table comes within a foot of the surface part of the year. The county’s most common soil series is a clayey soil laid down in an old lake. A wet trench may need pumping, and the new pipe needs firm bedding and backfill compacted in lifts.
• The pipe you have now. Warren’s sheet says roots enter cracks in sewer pipe and can grow until the line plugs. Clinton Township set up a repair program for failed clay sewer leads in homes built in 1974 or before.

A camera inspection shows the condition of the pipe before anyone digs. Clinton Township’s water and sewer department suggests a camera in the lateral as the first step.

Open trench or trenchless: which costs less?

Here is the market comparison from national cost guides.

The per-foot prices sit close together. One guide calls trenchless less invasive. The same guide says it only works when the pipe has not collapsed.

Delpres replaces sewer lines by open trench. The trench shows the whole run from the house to the main. The new pipe goes in on firm, even bedding at the slope the plumbing code requires. Required tests are done and documented before final backfill.

What do the tap, the permit and the inspection cost?

Replacing a lateral takes a permit and an inspection in the cities we checked. St. Clair Shores says to get a permit and arrange an inspection before any sewer line is dug up. Warren requires permits and inspection on private property and in the public right-of-way. Clinton Township says a contractor who replaces a lateral must register with its Water and Sewer Department.

A brand-new connection to the public main, the tap, has its own charges. One national guide puts a city water and sewer hookup at $500 to $20,000.

Richmond’s 2025-26 fee schedule is one example. A sewer connection there is billed at time and material, with a $500 minimum and a $500 deposit. The schedule also lists a capital charge of $1,800 for a home on a 5/8 or 3/4 inch water meter. The residential sewer inspection and permit fee is $35.

A new water service connection in Richmond is billed the same way. Our water service line replacement page covers that side of the job.

What are the signs of a failing sewer line?

Watch for these warning signs:

• Slow drains in more than one fixture
• Sewage odors inside or outside the home
• Unusually green or soggy patches in the yard
• Backups that keep coming back

A plumber or drain cleaning company clears a clog. When the pipe itself has failed, the fix is a repair or a replacement. A camera inspection shows the actual condition of the line, and that decides which one.

How do you get a firm price for your sewer line?

A firm price starts with a look at your line. We can run a camera inspection to see its actual condition. Then we measure the run and check what sits on top. You get the quote in writing.

Once the job is set, we call MISS DIG 811 for locates before we dig. Michigan law sets that call at least three business days ahead. Read more about our sewer lateral replacement work, or call (877) 633-5773 for a free estimate.