Slab Leak Repair Cost in McKinney, TX (2026)

What published cost guides say

There's no reliable McKinney or Dallas-Fort Worth average for slab leaks, so these are national ranges. They're useful for spotting a quote that's far out of line, not for predicting your exact bill.

• HomeAdvisor (updated June 2026): average $2,280, typical range $630 to $4,400, including leak detection. Source
• This Old House (updated April 2026): average about $2,300, range $630 to $4,400 or more. Source
• Fixr (updated May 2025): average $2,500, typical range $1,000 to $4,000, with a low of $600 and a high around $15,000. Source

The averages agree closely. The high end is where they differ, mostly because of rerouting and restoration, covered below.

Cost by stage

A slab leak bill usually has up to three parts. Ask for each one to be priced separately.

1. Finding the leak

• HomeAdvisor: $150 to $400
• This Old House: $150 to $600
• Fixr: $100 to $400, depending on how invasive detection needs to be

Detection uses acoustic equipment, pressure testing and sometimes thermal imaging. It's often done by a leak detection specialist rather than the plumber who makes the repair. See leak detection for what the process involves.

2. Fixing the pipe

The method is the biggest single driver of cost, and the sources give different spreads:

• Pinhole leak repair: $150 to $800 (HomeAdvisor)
• Broken pipe repair: $200 to $2,000 (Fixr and This Old House); HomeAdvisor lists a single burst pipe at $200 to $3,000
• Breaking through the slab for direct access: $500 to $3,000 (Fixr)
• Tunneling under the slab: $900 to $2,000 (Fixr)
• Pipe lining (epoxy or cured-in-place): $500 to $2,000 (Fixr); HomeAdvisor quotes cured-in-place at $80 to $250 per linear foot
• Rerouting the line through walls or the attic instead of under the slab: $600 to $4,000 (HomeAdvisor), $1,500 to $15,000 (This Old House), $4,000 to $15,000 (Fixr)

The rerouting spread is huge because it covers anything from bypassing one short run to replumbing a large part of the house. If a plumber recommends rerouting, ask exactly how many feet of pipe and which fixtures are involved.

3. Putting things back

This part is easy to forget and often not included in the plumber's price:

• Concrete slab patch after access: $300 to $6,750 (HomeAdvisor)
• Flooring, cabinets and drywall: depends entirely on what was cut out
• Water damage repair: $500 to $15,000 or more (HomeAdvisor)

A leak under tile in a finished kitchen costs far more to put right than one under a garage floor or a closet.

What drives the price

• Leak location. Under a utility area or garage is cheapest; under finished flooring or cabinets is the most disruptive.
• Hot or cold line, water or drain. HomeAdvisor lists drain line leaks under the slab at $800 to $5,000, above typical supply line repairs.
• Repair method, as above. Spot repair is cheapest for a single isolated leak; rerouting may make sense when pipes are failing in several places.
• Labor. HomeAdvisor lists plumber labor at $75 to $150 per hour and says it's the bulk of the bill.
• Permit. Repairing or rerouting water piping is plumbing work, and the City of McKinney's permit fee schedule lists a Plumbing Permit Fee of $40.00, plus a per-fixture plumbing fee table. If foundation work is also needed, the same schedule lists Residential Foundation Repair Permits at $75.00. Ask each plumber which permits their quote includes.
• After-hours work. HomeAdvisor says many plumbers charge time and a half to triple their hourly rate outside business hours (source).

How to get an accurate quote

1. Pay for detection first, and ask for the leak location in writing, ideally marked on the floor.
2. Ask for a repair quote that separates access, pipe repair, concrete patching and permit fees.
3. Ask why that method. Why a spot repair, tunnel or reroute for this leak? What's the risk of another leak nearby?
4. Ask what's not included: flooring, drywall, painting, cabinet removal, water damage drying.
5. Ask about the warranty on the repair and on any rerouted pipe.

The written estimate should show the responsible master plumber's name and license number and state that plumbers are regulated by the Texas State Board of Plumbing Examiners, as Texas rules require. You can check the license on the TSBPE lookup.

Honest ways to save

• Act early. A small leak caught quickly usually means less concrete, flooring and water damage to pay for.
• Get two or three repair quotes once the leak is located. You can use one detection report to get comparable prices.
• Weigh repair against reroute. A single leak in otherwise sound pipe often suits a spot repair. Several leaks over a few years may make rerouting cheaper in the long run.
• Call your insurer early. Many policies treat the pipe repair and the resulting water damage differently. Ask what's covered before work starts, and keep photos and the detection report.
• Avoid after-hours rates by shutting off the water at the main valve if the leak is heavy, then booking a regular appointment.

Red flags

• A repair price before anyone has actually located the leak
• Pressure to reroute the whole house with no explanation of why a spot repair won't work
• A quote that doesn't say who restores the floor or concrete
• Claims that a leak was definitely caused by the soil, with nothing to back it up
• No license number on the paperwork

For more on vetting a plumber, see choosing a plumber and the slab leak repair guide.