Slab Leak Repair and Under-Slab Plumbing in Garland, TX
Responsible Master Plumber Bradley Earp, M-43562 · $97 diagnostic · reroutes from $1,050 per fixture drop · financing available · 15% off same-day approval
Garland's 1960s and 1970s slab homes are now old enough that leaks in the copper and cast iron under the floor are common. We find the leak, tell you whether it's a water line or a drain, and give you a written price to repair it, reroute it or repipe the house.
- Licensed & Insured (TSBPE M-43562, Responsible Master Plumber Bradley Earp)
- $97 Diagnostic
- Upfront Pricing
- Certified Price Review
- ★ 4.8 on Google
Signs of a slab leak
Your water bill jumps and nobody is using more water.
The meter's leak indicator spins with every faucet off.
A warm spot on the floor (a hot-water line leaking under the slab).
The sound of running water when nothing is on.
Damp carpet, lifting wood or vinyl, or a musty smell that won't go away.
New cracks in tile or drywall, or doors that suddenly stick.
Water-line leak or drain leak?
"Slab leak" covers two different problems, and the fix and price are different:
- Water (supply) line leak: pressurized copper or other water pipe under the slab. Shows up on the meter. Fixed by a spot repair, a reroute or a repipe.
- Drain line leak: the cast iron or plastic drains under the slab. Doesn't spin the meter, but soaks the soil every time you run water. Found with a drain test and camera. Fixed by tunneling.
We test both, so you aren’t paying for the wrong repair.
Garland specifics
- Housing age. Garland grew from about 38,500 people in 1960 to about 139,000 in 1980, so a large share of its homes have 45- to 65-year-old pipe under the slab.
- Blackland clay. Garland sits on the expansive clay soils of the Blackland Prairie, which swell when wet and shrink in drought. That movement stresses pipes cast into or under the slab.
- Who owns what. The City of Garland owns the water line up to and including the meter. From the meter to the house and everything under the slab is the homeowner's.
- Check the meter first. Turn off every fixture and watch the meter's leak indicator. If it moves, call us. Your house shutoff is usually near the outdoor faucet closest to the meter, and it can be buried up to two feet down.
Three ways to fix a water-line slab leak
- Direct repair. We pinpoint the leak and open the slab (or tunnel to it) to replace the bad section. Best for a single leak in otherwise sound pipe.
- Reroute. We abandon the leaking line under the slab and run new PEX through the attic and walls to the affected fixtures. No digging under the house, and it removes that line from the slab for good. Priced per fixture drop.
- Whole-house repipe. When the under-slab copper has leaked more than once, the rest is usually on its way. Repiping everything in PEX ends the problem. See repiping.
Drain leaks under the slab
A leaking drain is repaired or replaced by tunneling under the foundation from outside. If the drains are cast iron and failing along their length, replacing the run is usually cheaper than chasing leaks. See cast iron drain replacement in Garland.
Slab leaks and your foundation
Leaking water under a slab softens and swells the clay soil the foundation rests on. If you have a foundation company coming out, have the plumbing tested first: fix the leak, then level the house. If they need the lines tested, we can camera and pressure-test them and share what we find.
Slab leak repair cost in Garland
Example (illustration only): a 1970s Garland home where the leak is on the line feeding the kitchen and laundry (kitchen sink + dishwasher + washer box + 1 hose faucet = 4 drops). Reroute in PEX: 4 × $1,050 = $4,200, or $3,570 approved the same day, plus detection.
A direct spot repair through the floor is quoted after we locate the leak, because the access and repair path depend on what's under the finish.
Start with a $97 diagnostic
Every job starts with a $97 diagnostic, a camera inspection or walk-through as needed, and a written quote before work begins. We’re open Monday through Saturday and closed Sunday.
Already have another quote? Send it to us.
Certified Price Review: We’ll match or beat apples-to-apples plumbing scopes. Send us a written, itemized slab leak repair estimate from another licensed plumber. We compare scope, installation method, materials, access/excavation, warranty and diagnostics. If the work is directly comparable, we may adjust our price. Verbal or incomplete estimates may not qualify, and a review doesn’t obligate us to match. See program terms →
Financing: Larger jobs like sewer replacement and repipes can be split into monthly payments, subject to credit approval. See financing options →
Save 15% when you approve the same day. Approve your written quote the day we give it to you and we take 15% off.
Garland slab leak FAQs
How much does slab leak repair cost in Garland?
It depends on the repair. Rerouting a leaking line through the attic is $1,050 per fixture drop on a slab home. Tunneling to reach a leak or a drain is $425 per foot plus $1,150 per access hole. You save 15% if you approve the same day.
Is it better to reroute or repair a slab leak?
A first, single leak in otherwise good pipe can be repaired directly. If the line has leaked before, or the pipe is the same age as the rest of the house, a reroute takes it out from under the slab for good.
Does homeowners insurance cover slab leaks?
Many policies cover the cost to access the leak and the resulting water damage, but not the pipe itself. Check your policy; we provide the leak location report, photos and an itemized quote for your claim.
Can a slab leak damage my foundation?
Yes. Water under the slab saturates the clay, which swells and can move the foundation. Fix the leak before any foundation leveling.
Who pays for a leak at the water meter in Garland?
The City owns the pipe up to and including the meter. A leak on the meter or the City's side is the City's to fix. A leak between the meter and your house, or under your slab, is the homeowner's.