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How much does sump pump replacement cost in Washington?
Updated September 2026 · Washington price index 1.21 for plumbing work (national = 1.00)
In Washington, a licensed plumber typically charges $360 to $1,200 to replace a sump pump, with most jobs landing near $660. That is about 21% above the national average of $300–$1,000, based on what plumbers earn in Washington.
AI-powered second opinion using these same Washington figures. No account, no card. Need someone to do the work? Verified pros in Washington took the Fair Price Pledge.
What a Washington quote means
| Quote for this job | What it means |
|---|---|
| Under $216 | Suspiciously low — ask what is excluded, and check licensing and insurance |
| $216 – $1,320 | Fair price — inside the typical range (up to 10% over the top is still normal) |
| $1,320 – $2,100 | Running high — get the quote itemized, and get a second one |
| Over $2,100 | Ripoff territory — more than 1.75× the high end of the typical range |
Same rules the QuoteJury checker uses on every quote.
What you're paying for
What is usually included: A 1/3 to 1/2 HP submersible pump, a new check valve, reconnecting the discharge, testing, and 1–2 hours of labor.
What moves the price:
- Pump horsepower and build (cast iron versus plastic housings)
- Adding a battery backup pump, which can double the total
- Replacing the pit liner, lid or discharge piping
- Emergency replacement during a storm at premium rates
Pedestal vs submersible and horsepower, whether the check valve/discharge piping is replaced, battery backup add-on, and plumber hourly rate.
Sump pump replacement cost across Washington
Typical range by metro and rural area, from BLS wage data for plumbers in each area.
| Area | Typical range | Most jobs |
|---|---|---|
| Bellingham, WA | $410 – $1,350 | $750 |
| Bremerton-Silverdale-Port Orchard, WA | $370 – $1,250 | $670 |
| Kennewick-Richland, WA | $400 – $1,300 | $720 |
| Longview-Kelso, WA | $350 – $1,200 | $650 |
| Mount Vernon-Anacortes, WA | $350 – $1,150 | $640 |
| Olympia-Lacey-Tumwater, WA | $360 – $1,200 | $660 |
| Seattle-Tacoma-Bellevue, WA | $410 – $1,400 | $760 |
| Spokane-Spokane Valley, WA | $330 – $1,100 | $600 |
| Walla Walla, WA | $320 – $1,050 | $590 |
| Wenatchee-East Wenatchee, WA | $320 – $1,100 | $590 |
| Yakima, WA | $290 – $960 | $530 |
| Eastern Washington nonmetropolitan area | $300 – $990 | $540 |
| Western Washington nonmetropolitan area | $300 – $1,000 | $550 |
Frequently asked
Is $660 a fair price for sump pump replacement in Washington?
Yes. $660 is right around what most homeowners in Washington pay. Anything from $216 to $1,320 is inside the normal range for a licensed plumber; above $1,320 it is worth getting a second quote.
Why do quotes for the same job vary so much?
Pump horsepower and build (cast iron versus plastic housings). Adding a battery backup pump, which can double the total. Company overhead matters too: a large company with trucks, dispatchers and a warranty department charges more than a one-person shop, and both can be honest prices.
When should I get a second quote?
Any time a quote lands above $1,320, or when the contractor cannot break it into parts, labor and fees. Ask for the itemized version, ask what would change the price, and confirm licensing and insurance. You can also paste the quote into the free QuoteJury checker for an instant second opinion.
Other plumbing jobs in Washington
- Gas water heater replacement (40–50 gallon tank)
- Electric water heater replacement (40–50 gallon tank)
- Gas tankless water heater installation
- Garbage disposal replacement
- Kitchen faucet replacement
- Toilet replacement
- Running or leaking toilet repair
- Clogged drain cleaning
- Sewer line camera inspection
- Sewer line hydro jetting
- Water pressure regulator (PRV) replacement
- Main water shutoff valve replacement
- Leaking pipe repair
- Water heater expansion tank installation
- Plumber service call and hourly rate
Sump pump replacement in other states
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Sources
- Angi (2026): $309–$755 nationally
- HomeGuide (2023): $400–$700 nationally
- Fixr (2025): $350–$1,000 nationally
- U.S. Bureau of Labor Statistics, Occupational Employment and Wage Statistics, May 2025 — median hourly wages by state and metro area
About these numbers. Ranges are typical market rates for a licensed, insured contractor, blended from published U.S. cost guides and adjusted with U.S. Bureau of Labor Statistics wage data (OEWS, May 2025) for each state and metro area. They are estimates, not a bid, appraisal or inspection. Real prices move with parts, access, permits and code requirements. The quote checker is AI-powered and labeled as such.