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Sewer Main Repair Cost Guide

A sewer main is the large pipe that carries waste water from your home to the city sewer system. If you notice a muddy area in your yard, a line of extraordinarily green growth above the location of the pipe, or if the sewer backs up into your home, these are signs of the need for sewer main repair. Before you call in a plumber for this costly job, there are a few things you'll need to know.

National Repair a Sewer Main Costs

Cost data is based on actual project costs as reported by ImproveNet members.

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Average reported cost

based on 356 cost profiles


Minimum cost


Maximum cost

Most homeowners spent between:




National Repair a Sewer Main Costs
Average reported cost $2,226
Number of Cost Profiles 356 cost profiles
Minimum reported cost $60
Maximum reported cost $6,000
Most homeowners spent between: $1,369 to $2,659

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Average Cost to Repair a Sewer Main

Repairs for a sewer main are pricey. Homeowners can expect to pay an average of $2,885 for a sewer line repair. The first step of the repair process is for a plumber to send a video camera through the sewer pipe to inspect it. The camera allows the plumber to visualize the problem and identify the precise area in need of repair. This will ultimately save money compared to just assuming the whole sewer main went bad and replacing the entire length of pipe.

Sewer Main Problems

Sewer mains typically last for 50 years or longer. Hard water, frost, tree roots and shifting soil can damage the pipe and cause it to crack or corrode. A sewer line problem cannot be ignored, as it will only worsen and could cause significant damage to your home if not promptly and properly fixed.

Factors that Affect Sewer Main Repair Costs

When the cause of the broken sewer line is tree roots, it is possible that the tree may need to be removed in order to excavate the sewer line and repair it. Tree removal can add thousands of dollars to the sewer main repair project. If a driveway, patio, porch, sidewalk or other structure needs to be excavated and then replaced, this will also increase the cost of the project. Some cities require a permit and inspection for sewer line repair, which will also add to the project cost.

If You're Thinking of DIY Sewer Main Repair

Due to the health risks associated with waste water and the amount of excavation and plumbing work needed, sewer main repairs are not a DIY project.

Last updated on May 19, 2016

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