Cost to Sewer Line Repair / Replacement in Seattle, WA (2026)
If you’re budgeting a sewer line repair / replacement in Seattle, most projects run $1,900-$12,668, 27% above the $4,500 national average. What moves that number most is usually one thing: Repair vs. Full Replacement. On its own it can swing the cost by $500 - $15,000, so that’s the decision to slow down on before you sweat the smaller stuff.
Easiest place to save: Always get a camera inspection ($150-$400) before agreeing to any repair or replacement - it is the only way to know exactly what is wrong and where.
$1,900-$12,668 in Seattle
27% above the national average · 1.27x cost multiplier
In Seattle, a sewer line repair / replacement runs $1,900 to $12,668 on average - about 27% above what homeowners pay nationwide. The West Coast market's labor costs account for most of the gap, with material pricing and local permitting fees adding to the spread. Use the cost table below to compare budget, mid-range, and premium options side by side.
Cost Breakdown in Seattle
| Line Item | Low | Mid | High |
|---|---|---|---|
| Cost per linear ft | $63 | $152 | $317 |
| Materials | $342 | $1,368 | $3,420 |
| Labor | $1,067 | $4,000 | $10,667 |
| Permits | $228 | $570 | $1,140 |
| Total | $1,637+26% vs. national avg | $5,938+26% vs. national avg | $15,227+27% vs. national avg |
Budget
Spot repair of a single crack or root intrusion using access from existing cleanout, no excavation required.
Mid-Range
30-50 foot section replacement, open trench, new ABS or PVC pipe, basic lawn restoration.
Premium
80-100 foot full replacement, tree root damage, trenchless CIPP lining or pipe bursting, driveway or sidewalk crossing, full restoration.
Material Options
Material prices below are national averages; availability in Seattle may shift costs slightly.
| Material | Cost/Unit | Best For |
|---|---|---|
| PVC (Schedule 40) | $1-$3 per linear ft materials | Open trench replacement in most residential applicationsStandard residential sewer material, smooth interior minimizes buildup, resistant to roots and chemicals, 50+ year lifespan |
| ABS (Acrylonitrile Butadiene Styrene) | $1-$2.50 per linear ft materials | Western US residential sewer lines - check local code approvalLighter than PVC, widely used in western US, good chemical resistance |
| CIPP Lining (Cured-In-Place Pipe) | $80-$200 per linear ft installed | Cracked or root-infested pipe that is still structurally intact - best for under driveways and hard surfacesNo excavation required, restores pipe strength, smooth interior improves flow, can line around bends |
| Pipe Bursting | $60-$150 per linear ft installed | Full replacement of failed lines where the route is relatively straight and open trenching is difficultTrenchless, installs new full-diameter pipe, works for clay and cast iron lines |
Other Projects in Seattle
Seattle Estimate
Typical Range
$1,900-$12,668
vs. National Average
27% above national
Cost Multiplier
1.27x
Cost Per linear ft
$63-$317
This 1.27x estimate prices Seattle labor from BLS Occupational Employment and Wage Statistics (May 2025) and applies a lighter regional adjustment to materials and permits, which vary less by metro than labor does. Actual bids vary by contractor, project scope, and timing.
See national average costs →