How much does slab leak detection cost in Phoenix?

Slab leak detection in Phoenix runs $450–$750 for the full slab diagnostic, which includes line isolation, pressure testing, and electronic acoustic listening to pinpoint a leak buried under concrete. That is more involved than a standard electronic leak check on an exposed line. Detection is always quoted and completed separately from repair — we locate the leak precisely before recommending any repair approach.

How much does slab leak repair cost in Phoenix?

Slab leak repair in Phoenix varies by approach: a direct spot repair (cutting the slab, patching the pipe, and re-pouring the concrete) typically runs around $3,800 in addition to detection cost. A single-line reroute that bypasses the slab through the attic or walls typically starts around $1,800 and runs to roughly $6,000 depending on home size and pipe routing. A full repipe is quoted individually and generally falls in the $6,000–$15,000 range. We give a repair number after detection, not before.

Should I repair or reroute a slab leak?

It depends on the pipe condition and leak history. A single failure in otherwise healthy copper often warrants a spot repair. Older copper with corrosion throughout, or a home with multiple prior slab leaks, is better served by a reroute or full repipe. We'll tell you honestly which situation you're in.

Slab Leak Detection & Repair Cost in Phoenix, AZ

Slab Leak Detection

Find It First — The Diagnostic Phase

Detection is the diagnostic phase. We do not break concrete until we know exactly where the leak is. This is not optional — guessing costs more than finding it right. A slab diagnostic runs higher than a standard electronic leak check because the leak is buried under concrete: it takes line isolation, pressure confirmation, and acoustic pinpointing to find it precisely.

Pressure Testing (Isolation & Confirmation)

We isolate individual lines under pressure to confirm which line is leaking and narrow the general location. This is the first step on every slab leak call — it confirms the leak is under the slab before we bring in listening equipment.

Typical range

$350 – $500

Electronic Listening (Acoustic Detection)

Once isolated, we use acoustic amplification equipment to listen for the leak through the slab. We've located leaks that two other companies couldn't find with the same equipment. Experience matters here as much as the tools.

Typical range

$450 – $650

Full Detection (Pressure Test + Electronic Listening)

Complete detection service: isolation, pressure confirmation, acoustic pinpoint, and marked location on the slab. This is what you need before any repair work begins.

Typical range

$450 – $750

Why Detection Is Billed Separately

Detection and repair are quoted separately because the repair scope is unknown until we find the leak. A company that gives you a "slab leak repair" price before they've located it is guessing. We find it first, show you exactly what's there, and then give you a real repair number.

Leak located? See your repair options ↓

Repair Options

Good, Better, Best — After Detection

Three repair approaches — which is right depends on your pipe material, the leak location, and how much life is left in the rest of the system. We'll recommend what we'd do if it were our home.

Good

Spot Repair — Direct Slab Access

After detection

~$3,800

Open the slab directly above the leak location, cut out the failed section of pipe, replace it, and re-pour the concrete patch.

Least invasive when the pipe is otherwise in good shape
Concrete cutting, pipe repair, and patch-back: around $3,800, depending on depth, access, and the size of the area opened
Slab patched and restored after repair
Best for: single isolated failure, relatively young pipe, copper in good condition elsewhere

When this makes senseIf you have a 1998 home with solid copper everywhere and one pinhole failure, a spot repair makes sense. If you have a 1975 home with corroded copper throughout, it's a band-aid.

Better

Line Reroute — Above-Slab Bypass For Older Homes

After detection

$1,800 – $6,000

Abandon the failed line under the slab. Run new supply line through the attic or walls above the slab. No concrete cutting — the slab stays intact.

Typically $1,800–$6,000 depending on line length, routing, and drywall access — exact number quoted after detection
No concrete cutting — the slab stays intact
Failed line capped and abandoned
New line routed through attic or walls
Best for: older copper pipe, homes with multiple prior slab leaks, pipe showing widespread corrosion

Why we often recommend thisA reroute avoids the slab entirely. If you've had one slab leak, you're statistically likely to have another in aging copper. The reroute fixes this line permanently and doesn't gamble on the rest of the slab.

Best

Whole-Home Repipe

See repipe page

Quote Required

When the slab leak is the symptom, not the disease. Aging copper throughout the home — widespread corrosion, scale, pinhole history. Replaces all supply lines above and below slab.

Addresses the whole system, not just one line
Phoenix whole-home repipes generally run $6,000–$15,000 depending on home size and material — see the repipe page for the full breakdown
One-time investment that ends the slab leak cycle permanently
PEX-A, PEX-B, or copper — material options available
Best for: repeated slab leaks in aging copper homes

When this makes senseIf you're on your third slab leak in a 1970s home, you're not fixing a leak — you're managing a failing pipe system. A repipe addresses the whole problem at once. See our full repipe breakdown →

What We Look For

Pipe material, wall thickness, the color of the water at the leak, how many prior repairs are visible, and the overall condition of the system. He's walked into slab leak calls where the pipe was paper-thin throughout and advised a repipe. He's also seen homes where one spot repair bought 10 more years. The honest assessment depends on what he actually sees.

What's Always Included

No Line Items. No Surprises.

Detection Before Any Concrete Is Broken

We locate the leak precisely before any repair work begins.

You See What We See

We walk you through what we find and explain the options before you decide anything.

Quality Review on Every Slab Leak

Every slab leak case is reviewed for quality before we close it out. Experience matters here as much as equipment.

Repair Quoted After Detection

Repair numbers are given after we've located the leak — not before. No surprises mid-job.

Honest System Assessment

We'll tell you if a spot repair makes sense or if the pipe system is past the point of patching.

Slab Patch on Spot Repairs

When concrete cutting is required, re-pour and patching is included in the repair scope.

What Does a Slab Leak Cost to Find and Fix in Phoenix?

Find It First — The Diagnostic Phase

Good, Better, Best — After Detection

No Line Items. No Surprises.

Running Meter? Warm Spot on the Floor? Call Us.