23 licensed plumbers

Sewer Line Repair & Replacement Cost in Seattle

Every plumber listed offers sewer line repair and is verified active with the Washington State Department of Labor & Industries.

About this service

Typical cost
$1,200 - $4,800+

Sewer line repair in Seattle involves localized excavation to replace damaged sections of the main subterranean sewer lateral. When your sewer line needs repair, we help you understand your options and costs. Spot repairs in Seattle range from $1,200 to $4,800, with full traditional sewer replacements costing $3,000 to $30,000, depending on depth and the need to cross streets or driveways. Trenchless alternatives are also available for many situations.

Primary Causes

  • •Ground settlement
  • •Seismic shifts
  • •Invasive tree roots
  • •Material degradation of clay, concrete, or cast iron pipes

If neglected

Broken sewer lines can cause sinkholes, foundation settlement, sewage pooling in lawns, and environmental fines.

Probability of a DIY fix for Sewer Line Repair?

Zero. The process requires trench excavation, shoring, heavy machinery, and compliance with King County safety and health codes.

Insurance coverage

Standard homeowners insurance excludes exterior utility line failures due to wear and tear. Homeowners must purchase a separate Service Line endorsement or private utility policy to obtain coverage for these repairs.

Licensed plumbers offering sewer line repair