22 licensed plumbers

Whole House Repiping Cost in Seattle | Old Pipe Replacement

Every plumber listed offers whole-home repiping and is verified active with the Washington State Department of Labor & Industries.

About this service

Typical cost
$2,400 - $18,000

Whole-house repiping in Seattle involves replacing all existing hot and cold water supply lines with modern PEX or copper piping. If your home has aging galvanized pipes, repiping solves problems like discolored water, low pressure, and chronic leaks. Professional repiping in Seattle ranges from $2,400 to $18,000, depending on home size, layout, and material choice.

Primary Cause

  • •Systemic corrosion inside older galvanized iron pipes, common in historic homes. Corrosion restricts water flow, causes discolored tap water, and leads to chronic pinhole leaks behind finished walls.

If neglected

Galvanized pipes will experience systemic failures, causing hidden water damage and mold throughout the home's framing.

Probability of a DIY fix for Whole-House Repiping?

Zero. Repiping is an extensive structural project that requires wall removal, complex routing, pressure testing, and municipal permits.

Insurance coverage

Insurance does not cover preventative repiping; only sudden burst pipe cleanup is covered.

Licensed plumbers offering whole-home repiping