Cost to Main Water Shut-Off Valve Replacement in Seattle, WA

$224–$768 in Seattle

28% above the national average · 1.28x cost multiplier

In Seattle, a main water shut-off valve replacement runs $224 to $768 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 per valve replaced	$224	$480	$768
Materials	$51	$102	$192
Labor	$154	$320	$640
Permits	$0	$64	$128
Total	$205+28% vs. national avg	$486+28% vs. national avg	$960+28% vs. national avg

Budget

Simple ball valve replacement on accessible copper or PEX supply, no complications, requires utility shutoff at meter.

Mid-Range

Gate to ball valve upgrade on typical installation, some access difficulty, utility coordination for meter shutoff, standard restoration.

Premium

Complex installation with difficult access, lead or galvanized pipe requiring section replacement, multiple valve upgrades, drywall or floor access.

Material Options

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

Material	Cost/Unit	Pros	Cons	Best For
Full-Port Ball Valve (Brass)	$15-$50 each	Most reliable, quarter-turn operation, durable brass body, full-port allows unrestricted flow	Slightly more expensive than standard port, requires correct sizing	Main water shutoff - the gold standard for new residential shutoff valve installationsMost reliable, quarter-turn operation, durable brass body, full-port allows unrestricted flow
Ball Valve with Integral Pressure Regulator	$80-$200 each	Combines shutoff and pressure regulation in one unit, simplifies installation, protects downstream fixtures	More expensive, larger unit, requires adjustment of pressure setting	Homes with high municipal water pressure (above 80 PSI) where a pressure reducing valve is needed anywayCombines shutoff and pressure regulation in one unit, simplifies installation, protects downstream fixtures
Ball Valve with Flow Meter	$60-$150 each	Monitors water consumption, can detect leak events via connected app, shutoff capability	Requires power (battery or hardwired), higher cost, app and connectivity setup required	Tech-savvy homeowners who want leak detection and consumption monitoringMonitors water consumption, can detect leak events via connected app, shutoff capability
Automated Smart Water Shutoff Valve	$200-$600 equipment plus labor	Automatically shuts off water when leak sensor detects water, can be controlled remotely, insurance premium discounts possible	Highest cost, requires electrical connection, app and WiFi dependent	Vacation properties, second homes, or homeowners with a history of plumbing leaks or high-value finishes to protectAutomatically shuts off water when leak sensor detects water, can be controlled remotely, insurance premium discounts possible

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Back to national average for Main Water Shut-Off Valve Replacement

Seattle Estimate

Typical Range

$224–$768

vs. National Average

28% above national

Cost Multiplier

1.28x

Cost Per per valve replaced

$224–$768

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 →