Los Angeles County · Detection
Pinpoint hidden leaks under concrete foundations without breaking up the whole slab.
The Whittemore Family, who lives in Van Nuys, Los Angeles, reached out after noticing unexplained cracks in flooring, drywall, or the foundation itself. Los Angeles has one of the largest concentrations of mid-century, single-story slab homes in California, especially across the San Fernando Valley in neighborhoods like Van Nuys, Woodland Hills, and Reseda, where tract construction from the 1950s and 60s ran copper supply lines directly through the concrete foundation. Add in the region's expansive clay soil, which swells noticeably during Los Angeles's wetter winters after a dry stretch, and those original slab lines take on real stress they weren't necessarily built to handle decades later. Instead of guessing and re-testing for weeks, the location was confirmed on the first visit and handed straight to repair.
— The Whittemore Family, Van Nuys, Los Angeles
Los Angeles has one of the largest concentrations of mid-century, single-story slab homes in California, especially across the San Fernando Valley in neighborhoods like Van Nuys, Woodland Hills, and Reseda, where tract construction from the 1950s and 60s ran copper supply lines directly through the concrete foundation. Add in the region's expansive clay soil, which swells noticeably during Los Angeles's wetter winters after a dry stretch, and those original slab lines take on real stress they weren't necessarily built to handle decades later. It's a pattern we see repeat: slab leak calls spike across LA in the months right after a heavy rain year, once soil that had been dry for a while swells and shifts against pipe that's already 50-plus years old.
Water service in Los Angeles is provided by LADWP, and confirming whether an issue is on your private plumbing or the utility side of the meter is one of the first things we check.
A slab leak happens when a hot or cold water line running beneath your home's concrete foundation develops a crack, pinhole, or corrosion failure. Left alone, it can warp flooring, feed mold behind walls, and quietly inflate your water bill for months. Our technicians use acoustic listening equipment, infrared thermal cameras, and static pressure testing to find the leak's exact position before a single inch of concrete is opened.
Because slab leaks are hidden under structural concrete, guesswork digging is expensive and destructive. We combine electronic amplification with thermal imaging to narrow the leak to a small, marked area, so any follow-up access work is as limited and targeted as possible.
A hot spot on the floor, or one area of carpet or tile that's always warmThe sound of running water when every fixture in the house is offA water meter that keeps spinning with all taps closedUnexplained cracks in flooring, drywall, or the foundation itselfMildew smell or unexplained humidity in ground-floor roomsA steadily climbing water bill with no change in household usageFrom Downtown LA, Hollywood, Silver Lake to Van Nuys, Woodland Hills, West LA, we handle slab leak detection calls across Los Angeles, matching the approach to each property's age, soil, and layout.
Call or request an appointment online. Same-day slots are available across California for active leaks.
A technician arrives with acoustic listening equipment, thermal imaging, and pressure or camera tools matched to your specific leak type.
The leak's exact location is marked and explained to you in plain terms, so nothing gets opened up on a guess.
You receive a written diagnostic report you can hand to your plumber, restoration team, or insurance company, with repair or fix options discussed on the spot.
“The floor in our hallway had a warm spot for weeks. They found the slab leak in under an hour with the listening equipment and marked a tiny area instead of tearing up the whole hallway. Huge relief.”
“Our water bill jumped for two months straight and we couldn't find why. Turned out it was a slow leak behind the water heater. Professional, on time, and explained everything on the spot.”
“Called about a gas smell near our meter and they were incredibly clear about safety steps over the phone before even arriving. Found the leak point and coordinated next steps with the utility.”
“Salt air had corroded a fitting outside near the meter box. They traced it with the acoustic equipment without digging up my whole side yard first. Appreciated the straightforward report.”
“Good experience overall, technician was knowledgeable and thorough. Took a little longer than expected but they were clearly being careful about pinpointing the exact spot before marking it.”
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