Slab Leak Detection & Repair — Los Angeles, CA
Honestly, most slab leak detection & repair questions can be answered over the phone. Save yourself the dispatch fee — call first, ask second. Free dispatch in business hours. After-hours fee folded into the job price if you accept the quote.
Talk to a tech: (800) 555-1024
A recent slab leak detection & repair call
A Los Angeles customer in their 1980s home had been chasing a warm spot in the master bedroom carpet, plus a $140 jump in the water bill for weeks before calling. Pinhole leak in the hot-water copper line under the slab was the actual cause. We re-routed the line overhead through the attic and abandoned the slab line; everything stable since. About $356 all in.
Scope of work
Slab leaks are pinhole leaks in copper plumbing lines that run inside or under a concrete slab foundation. Common in 1960s through 1980s slab-on-grade builds across the Sun Belt and parts of the Midwest.
Signs: warm or wet spots on the floor, unexplained jumps in the water bill, the sound of running water when nothing is on, mildew smell along baseboards. Hot-side leaks show up faster than cold-side because of the warm spot.
Detection runs $280–$480 standalone. We use acoustic listening equipment plus an infrared thermal camera. Once we've located it, you have two repair options.
Option A: re-route the failed line through the attic or crawl space, abandoning the line in the slab. Cost: $1,400–$2,800. Faster, no jackhammer, and future-proofs against the next pinhole on that line.
What's specific about Los Angeles jobs
Newer Los Angeles construction tends to be on slab foundations with PEX. Easier access in some ways, more code-current in others.
Typical investment
For slab leak detection & repair jobs in the Los Angeles area:
- Slab leak detection (acoustic + infrared): $350 – $600
- Re-route a single line overhead: $1,750 – $3,500
- Pinhole repair in slab (jackhammer): $2,250 – $4,250
- Full re-pipe of slab home (PEX overhead): $10,625 – $22,500