Licensed Plumber Required

Sewer Line Replacement Cost in Seattle, WA

Mixed Copper/PVC – 2 Bath

The average cost of sewer line replacement in Seattle, WA with Mixed (Copper/PVC) pipes (2-bath, 1,500 sq ft) is $5,860, with most homeowners paying between $4,860 and $7,150 depending on access difficulty, permit requirements, and contractor availability.

Cost Breakdown - Seattle, WA

Parts & Materials
$2,710
Mixed (Copper/PVC) profile
Labor
$2,880
18.9 hrs x $129/hr
Permits & Misc
$270
permits, disposal, parts
Total Estimate
$5,860
Range: $4,860-$7,150

* Estimates based on Seattle area labor rates ($129/hr). Actual costs vary. Get 3 quotes.

Home Profile

Pipe Material
Mixed (Copper/PVC)
Bathrooms
2 Bath
Home Size
1,500 sq ft
Local Labor Rate
$129/hr

Signs You Need This Service

  • !Recurring sewer backups despite repeated cleaning
  • !Sewer line over 40 years old
  • !Tree root intrusion confirmed on camera
  • !Collapsed or offset pipe sections
  • !Escalating repair costs with no lasting fix

What is Included

  • +Full camera inspection and mapping
  • +Excavate full sewer line length
  • +Remove old clay, cast iron, or Orangeburg pipe
  • +Install new PVC or HDPE sewer line
  • +Backfill and restore landscaping
  • +Permit, inspection, and city approval

Ready to Hire a Plumber in Seattle?

Use this estimate as your baseline. Get at least 3 quotes and ask each plumber to itemize parts, labor, and permits separately.

Fair range: $4,860 to $7,150

Compare Quotes from Top-Rated Plumbers via Angi

Frequently Asked Questions

How much does sewer line replacement cost in Seattle, WA?

The average cost of sewer line replacement in Seattle, WA is $5,860, with most homeowners paying between $4,860 and $7,150 depending on home conditions and contractor availability.

How long does sewer line replacement take?

Most sewer line replacement jobs take 18.9 hours for a 2-bathroom home with Mixed (Copper/PVC) pipes. Complex jobs or older homes may require additional time.

Can I do sewer line replacement myself?

This job requires a licensed plumber due to permit requirements, complexity, or safety considerations.

What affects sewer line replacement cost in Seattle?

Key cost factors include pipe material (Mixed (Copper/PVC)), home size (1,500 sq ft, 2 baths), local labor rates ($129/hr in Seattle), and permit fees.

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