Why a slab leak is an emergency
Water under a slab can undermine soil, lift flooring and feed mold. A hot water line leaking under a floor wastes energy as well as water, and some homeowners notice the warm spot before they notice any wet.
If your meter is moving with every fixture off, and the floor is warm or damp, shut off the main valve and call at any hour. We confirm the leak with a listening device before anything is cut.
Warm patch on the floor
A localized warm spot in a room with no vent or heater is a classic sign of a leaking hot line.
Sound of running water
A faint hiss with all fixtures off, heard with an ear near the floor.
Low pressure
Pressure that drops at taps with no explanation can mean a leak upstream.
Cracks and damp carpet
New cracks in tile or damp baseboards near a wall point toward water under the floor.
Three ways to repair a slab leak
| Option | How it works | Best when |
|---|---|---|
| Spot repair | Break a small section of slab, repair the pipe, patch the concrete | One accessible leak and otherwise sound pipe |
| Reroute | Abandon the slab line and run new pipe through walls or attic | The line is old, or leaks keep returning |
| Replace | Replace the entire supply loop | Widespread corrosion or multiple leaks |
Rerouting avoids breaking the slab and gives you a line you can reach later. It is common in older homes with failing copper. Our repiping page covers whole-house replacement when more than one line is failing.
Floor warm or meter running?
Call and we will walk you through shutting off the water. We will plan a locate visit.
What happens on the visit
Shut off and test
We isolate the supply and confirm pressure loss.
Locate
Acoustic and thermal tools mark the leak area on the floor.
Explain options
You see the location, the repair choices and a clear price.
Repair and restore
We repair, pressure test and patch what we opened. Flooring replacement is separate.
Slab homes in the Pleasant Hill area
Many postwar tract homes around Contra Costa Boulevard were built on concrete slabs with pipes running beneath. Over decades, those lines can leak at joints or where they rub the concrete. The age of the house is a clue, not a diagnosis, and we locate the leak rather than guess.
If you see damage on a floor, first take photographs and move furniture. Leak detection covers the tools we use.
What affects slab leak repair cost
Every home is different, so we give a clear price before work starts. Factors:
Insurance sometimes covers access and restoration after a sudden slab leak, but policies differ and often exclude the pipe repair itself. Ask before work begins.
Want your real number? Describe the job on the call and we quote it before work starts.
Service area
We repair slab leaks across 94523 and neighboring areas, including 94518 and 94519 in Concord. See the Concord page for the neighborhoods we cover.
Repair and reroute work follows the California Plumbing Code, which is based on the Uniform Plumbing Code (UPC), including the rules for pipe materials, supports and sleeves where pipe passes through concrete.
Common questions
Yes. The line is open 24/7. Shut off the main valve and call, and we will book the earliest locate visit.
Common signs are a warm floor patch, the sound of water with taps off, a spinning meter and unexplained damp flooring.
Not always. Rerouting the line overhead avoids breaking the slab. A spot repair breaks only a small section.
Policies vary. Some cover access and restoration after a sudden leak but exclude the pipe itself.
Spot repairs can take a day. Reroutes and replacements take longer, and we explain the timeline up front.
Prolonged leaks can undermine soil and cause settling or heave. That is why prompt action matters.
Still have a question about your situation? Call (855) 575-2890 any hour and describe what you are seeing.