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Plumbing · Spokane and North Idaho

Leak detection in Spokane Valley, WA

Hidden water leaks in walls, ceilings, slabs and crawl spaces, found with testing before anything is opened, then repaired at a price you see first.

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Leak prices
Find it, then fix it
Starting prices
  • Minor water leak searchFrom $152
  • Water pipe spot repairFrom $255
  • Major water leak searchFrom $511
  • Moen Flo shutoff, 3/4 inchFrom $1,610
Get a quote
Club members save 10% on leak searches and repairs.
From$152Minor water leak search
From$255Water pipe spot repair
2HRSMeter test you can run yourself
10%OFFFor club members

What is included

How we find and fix leaks.

  • Pressure testingWe test the water lines to confirm there is a leak and narrow down which run it is on.
  • Listening and imagingAcoustic equipment hears water escaping a pressurized pipe, and thermal imaging maps moisture behind surfaces.
  • Fixture checksToilets, tubs, showers and shower pans tested one at a time.
  • One small openingWhen the leak is inside a wall or ceiling, we open one targeted spot instead of searching by demolition.
  • The repair, priced firstSpot repairs, crawl space and attic repairs and copper under a slab, each at an upfront price.
  • Leak protectionMoen Flo shuts the house off when it senses a leak, and smaller detectors guard a water heater or washer.
Water spraying from a pinhole leak in a copper pipe
A pinhole leak in copper

Starting prices

Leak detection and protection prices.

Starting prices for finding a leak and for the devices that catch the next one. Repairs are priced once we know what failed.

Extra Moen Flo sensor
From $108
Moen Flo, 1 inch main
From $1,689
Leak detection starting prices · Gold Seal flat-rate book, 2026
ServiceWhat it coversStarting at
Minor water leak search
Water lines
Find a leak on the water supply.
From$152
Members from $137
Get a quote →
Open a ceiling or wall
Access
Open the ceiling or wall to expose the leak.
From$255
Members from $230
Get a quote →
Tub and shower leak search
Fixture
Find a leak in a tub and shower unit.
From$383
Members from $345
Get a quote →
Water heater leak detector
With shutoff
A Triple Guard detector that shuts off the water heater when it leaks.
From$452
Members from $407
Get a quote →
Shower pan leak test
Flood test
Test whether the shower pan holds water.
From$456
Members from $411
Get a quote →
Major water leak search
Hidden leaks
Find a leak that takes longer to trace.
From$511
Members from $459
Get a quote →
Wi-Fi leak detector
Honeywell Lyric
A sensor that alerts your phone to water on the floor.
From$689
Members from $620
Get a quote →
Automatic laundry shutoff
Washer
Shuts off the washer’s water when it senses a leak.
From$1,036
Members from $932
Get a quote →
Moen Flo whole-house shutoff
3/4 inch
Watches the house main and shuts it off when it detects a leak.
From$1,610
Members from $1,449
Get a quote →

Patching drywall, tile or flooring afterward is not in these prices. Member prices are for Quality Service Club members. Starting prices from our 2026 pricebook. A real person confirms your price before anything is scheduled.

Repairs

Leak repairs.

Leak detection · Gold Seal flat-rate book, October 2026
ServiceWhat it coversStarting at
Water pipe spot repair
1/2 to 1 inch
Repair a leak at one spot on a water pipe.
From$255
Members from $230
Get a quote →
Exposed leak repair
1/2 to 1 inch
Repair a leaking section of exposed water pipe.
From$573
Members from $516
Get a quote →
Under-slab repair
Copper water pipe
Repair a copper water line under a concrete slab.
From$1,075
Members from $967
Get a quote →
Expose a leak in concrete
Slab
Open the concrete to reach a leaking water pipe.
From$1,276
Members from $1,149
Get a quote →
Leak repair in a crawl space
Or attic
Repair a water line leak in a crawl space or attic.
From$1,334
Members from $1,200
Get a quote →

Member prices are for Quality Service Club members. Starting prices from our 2026 pricebook. A real person confirms your price before anything is scheduled.

Know the signs

Signs of a hidden leak.

Most leaks show up somewhere other than where they start.

A water bill that climbs

A higher bill with no change in how you use water is the most reliable early sign.

Running water with everything off

A hiss or trickle in a wall when no fixture is on.

Stains, warm spots or soft floors

Ceiling stains, bubbling paint, a warm spot on a slab floor or damp carpet.

A wet patch in the yard

Green spots or muddy pools can mean a leak on the line into the house.

How it works

Confirm. Locate. Repair.

You pay to find the leak once, and you see the repair price before we fix it.

  1. 01

    Confirm

    Testing proves there is a leak and which line it is on.

  2. 02

    Locate

    We narrow it down to the fixture, the wall or the run of pipe.

  3. 03

    Repair

    You get a price for the fix before any work starts.

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Questions

Leak detection, answered.

Answers from licensed plumbers. Still unsure? Call (509) 535-5946, 24 hours a day.

How much does leak detection cost?
A minor water leak search starts from $152 at Gold Seal, and a major search for harder-to-trace leaks starts from $511. Repairs are priced separately, from $255 for a spot repair on a water pipe.
Can you find a leak without cutting into walls?
Usually, yes. We use pressure testing, acoustic listening equipment and thermal imaging to pin the leak down, then open one small spot instead of searching by demolition.
How can I tell if I have a hidden leak?
Read your water meter, use no water for two hours, then read it again. If it moved, water is going somewhere. A rising bill with no change in use, the sound of running water and warm or damp spots on a floor are the other signs.
Should I repair the leak or repipe?
Repair when the leak is isolated and the pipe around it is sound. When the same line keeps failing, pinholes show up in several places or the house still has old galvanized pipe, replacing the run once costs less than repeated spot repairs.
How do I stop the next leak from flooding the house?
Install a shutoff that acts on its own. A Moen Flo watches the main and closes it when it senses a leak, from $1,610 on a 3/4-inch line. Detectors that guard just a water heater start from $452.

Membership

What members get.

Priority scheduling for emergencies, 10% off services and materials, no minor diagnostic fee, a yearly plumbing and drain safety inspection and shut-off tags on your main water valve and water heater.

Members vs non-members →

Quality Service Club

Members save
For every home and business we serve
$149first year

Plus tax. Then $95 a year when you renew.

  • Priority scheduling for emergencies
  • 10% off services and materials
  • No minor diagnostic fee
  • A yearly plumbing and drain safety inspection
  • Shut-off tags on your main water valve and water heater

Water where it shouldn’t be? Find it before it spreads.

Leak detection and repair across Spokane and North Idaho, priced before we start.