Average Sewer Line Repair And Replacement Cost In 2024 – Forbes Home

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When your home’s wastewater system slows or clogs, you may need to repair or replace your sewer line. Few homeowners look forward to sewer line projects with pleasure. But with experienced plumbing help, sewer line repair or replacement can go as quickly and painlessly as possible.

The sewer line replacement cost can vary depending on factors such as the linear footage, square footage, material type and line length. 

For instance, minor localized sewer repairs begin at around $650 and range up to $7,500 for 30 feet of sewer line replacement, with an average of around $4,000.

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Key Takeaways

  • Sewer replacement costs an average of around $4,000, but costs can vary widely depending on the size of the replacement and the material type.
  • You pay the least for an ABS plastic replacement and will pay the most for cast iron sewer line replacement.
  • You may need to replace your sewer line in the case of unpleasant odors, clogged drains and gurgling pipes.

By Linear Foot

Expect to pay between $55 and $250 per linear foot to replace a sewer line.

By Square Foot

As a rough estimate, sewer line replacement costs typically range from $50 to $250 per square foot. 

By Material

For material only, per 50 linear feet:

  • ABS Plastic: $140 to $260
  • PVC Plastic: $80 to $400
  • Cast Iron: $1,200 to $3,700

By Line Length

Sewer line replacement costs are commonly estimated based on the line length. Typically, replacing a short sewer line costs $1,250, while replacing longer lines can cost up to $25,000.

Sewer Line Replacement From House to Street

All full sewer line replacements begin at the house and end at the street, where municipal sewer obligation begins. As this distance can often be lengthy, expect to pay up to $10,000 for a 30-foot run of the sewer line. Depending on your area, the type of soil, time of year and other factors, a full sewer line replacement to the street can cost up to $20,000.

Sewer Line Under a Slab Replacement Cost

Adding a trenchless sewer line under a slab to avoid breaking up the slab can cost from $6,500 to $13,000. Breaking into a slab to replace a sewer line can cost $15,000 to $20,000.



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