Cost to Sump Pump Installation in Seattle, WA

$832–$2,560 in Seattle

28% above the national average · 1.28x cost multiplier

In Seattle, a sump pump installation runs $832 to $2,560 on average — about 28% 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 installation	$384	$1536	$5760
Materials	$320	$576	$1,024
Labor	$448	$832	$1,920
Permits	$0	$128	$256
Total	$768+28% vs. national avg	$1,536+28% vs. national avg	$3,200+28% vs. national avg

Budget

Pedestal sump pump replacement in existing pit, no pit excavation needed.

Mid-Range

Submersible sump pump installation in new pit, includes basin and discharge line to exterior.

Premium

Dual-pump system with battery backup, new pit excavation, interior drain tile connection, extended discharge line.

Material Options

Material prices below are national averages; availability in Seattle may shift costs slightly.

Material	Cost/Unit	Pros	Cons	Best For
Pedestal Sump Pump	$75-$200	Lower upfront cost, motor is above water so easier to service, longer motor lifespan in some cases	Noisier operation, less powerful than submersible, less effective in deep pits or high-volume flooding	Shallow pits, light-duty applications, tight budget replacements where an existing pedestal pit is already in placeLower upfront cost, motor is above water so easier to service, longer motor lifespan in some cases
Submersible Sump Pump	$150-$400	Quieter operation, more powerful, better for high water volumes, sealed motor handles wet conditions	More expensive upfront, motor harder to access for servicing since it sits inside the pit	Most residential installations, new pit builds, basements with moderate to heavy groundwaterQuieter operation, more powerful, better for high water volumes, sealed motor handles wet conditions
Combination Pump with Battery Backup	$300-$700 for the system	Provides redundancy during power outages and primary pump failure, runs automatically, peace of mind during storms	Higher upfront cost, battery must be replaced every 3-5 years ($100-$200), needs periodic testing	Homes in flood-prone areas, finished basements with expensive contents, areas with frequent power outagesProvides redundancy during power outages and primary pump failure, runs automatically, peace of mind during storms
Water-Powered Backup Pump	$150-$300	No battery to replace, works indefinitely during extended outages, low maintenance	Requires adequate city water pressure (won't work on well systems), uses municipal water which adds to water bills during activation, less effective at very high flow rates	Homes on municipal water with good pressure, as a secondary backup where battery maintenance is a concernNo battery to replace, works indefinitely during extended outages, low maintenance

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Back to national average for Sump Pump Installation

Seattle Estimate

Typical Range

$832–$2,560

vs. National Average

28% above national

Cost Multiplier

1.28x

Cost Per installation

$384–$5760

Estimates apply Seattle's 1.28x regional cost multiplier to national averages. Actual bids vary by contractor, project scope, and timing.

See national average costs →