Angi's 2026 figures show most homeowners paying from $630 up through $4,400 for a slab leak, averaging near $2,280 with detection included. A leak in a wall costs less and a whole-house repipe far more. All numbers on this page are guides. For the bigger picture, see leaks and burst pipes.
What does fixing a burst pipe cost?
Location sets the price. A broken pipe you can see and reach, such as one in the garage, can be a few hundred dollars. Behind a wall surface, drywall repair joins the bill. Beneath the slab is the top tier. Emergency visits are often billed at a higher hourly rate, and exposed pipe rarely takes longer than an hour or two, so the written quote sets the price.
Rough tiers:
- Visible pipe, garage or crawlspace or sink cabinet: low hundreds, parts and labor.
- Inside a wall or ceiling: the same plus opening and patching, commonly another few hundred.
- Beneath the slab: hundreds up to several thousand, see the next section.
Angi puts leak detection at $150 to $400 for most homeowners. The point is to learn where to cut, so the opening is made once.
How is slab leak pricing split by method?
Three repair styles exist. Spot repair means chipping through the concrete above the leak to mend that single point, the least costly of the three. A reroute retires the leaking line and runs a new one overhead, through attic or walls, and costs more. A repipe swaps the whole system and costs the most, so the written quote, not a national average, sets the price.
Whole-house repipe bids in Southern California vary with house size and finish work, so compare two or three written quotes built on the same method.
| Method | Range in guides | Fits when |
|---|---|---|
| Spot repair | lowest of the three | one leak, healthy pipe otherwise |
| Reroute | middle | pipe is hard to reach or fails repeatedly |
| Repipe | highest | several leaks or worn-out copper |
| Detection | $150 to $400 (Angi) | first step for all of them |
| Permit | set by the city | reroutes and repipes |
Restoration can change the picture. Matching stone tile or hardwood after a spot repair can add more than the repair itself.
Which clamps stop a leaking pipe?
A stainless repair clamp lined with rubber suits a pinhole, or a short crack, along a straight run. Slide it over the damage, tighten both bolts evenly, and the gasket does the sealing. Epoxy putty, self-fusing wrap and compression sleeves work for a short time too. Think of each as a stopgap until the section is replaced.
They fit copper, PEX and plastic of the matching size. They fail at threaded joints, on pipe thinned along its whole length, and under a slab where nobody can reach. How a temporary patch goes on, and when to stop trusting it, is laid out in repairing a pinhole in copper.
How do I patch a leaking connection for now?
First close the main and open a low tap to empty the line. Wipe the pipe dry, then clamp or wrap. A weeping connection is frequently just a slack nut or worn washer, so a small wrench turn or new washer may end it. A soldered or glued joint will not tighten, and that joint has to be redone.
Hot-water radiator pipes are rare in South Bay houses, which mostly use forced air. With a hydronic system, turn off the boiler and its feed valve first, since the water is hot. Whatever the pipe, find its shutoff valve before touching it.
What will a wall repair cost?
For the plumbing alone, guides land at a few hundred dollars, since the task is a short piece of pipe. Time goes into the wall: cutting a hole, tracing the pipe, then patching, texturing and painting. Drywall finishing can exceed the cost of the pipe, so ask whether a bid includes it.
Ceiling leaks add a moisture check, because damp insulation and drywall can grow mold. Should that be you, continue with water damage to a ceiling.
What should a Torrance homeowner budget?
Southern California metro prices skew above the national figures, and Torrance is no exception. Many postwar tract homes here, and in neighboring Lawndale, Gardena and Carson, were built on slabs, and some carry supply lines in or under the concrete. Pinhole pitting in older copper is a common reason those lines fail, and a plumber can identify the pipe you actually own.
A homemade calculator works like this: detection, plus the method from the table, plus the permit fee if one applies, plus restoration of floors and finishes. Each piece should get its own line on a written quote.
Insurance sometimes covers the water damage and the access work while excluding the pipe. Our page on coverage for broken pipes under a foundation explains how that usually breaks down.
Common questions
How long does the work last, start to finish?
Pinpointing the leak is a few hours. Spot repairs often wrap up inside a day, though concrete needs time to cure. Reroutes and repipes stretch to a couple of days, or most of a week in a bigger house. Expect the water off for stretches, and flooring as a separate follow-up job.
Is rerouting smarter than patching one spot?
Depends on the pipe. Patching is right when copper is healthy and a single pinhole is all that failed. Rerouting wins when the line is old, awkward to reach or has leaked before. A second slab leak is usually the signal plumbers use to propose a reroute or repipe. Ask for the reasoning on paper.
What belongs in a fair bid?
Check whether detection, concrete cutting and patching, the permit, flooring and drywall repair and any workmanship warranty are included. Ask who pulls the permit. Collect two or three bids built on the same method, so they line up. A very low bid that omits restoration tends to cost more later.
How can I sanity-check a number I was given?
Break it into the pieces above: detection, method, permit, restoration. A figure far outside the guide range deserves a line-by-line breakdown from the plumber. To compare against a fresh read, describe the job through the quote form and a local plumber can be sent to assess it.
Budget sorted? Del Amo Plumbing plumber explains the rest of the job.
Sources used
- Angi, how much does slab leak repair cost, 2026
- Published plumbing cost guides, read November 2026 (tiers only, no figures quoted)
Last updated