Pinpoint leak detection for Marin and Sonoma County homes, from hillside slab leaks to copper pinholes and radiant-floor failures.
From the 1920s bungalows of San Rafael and Petaluma's Victorian core to the slab-on-grade hillside homes above Mill Valley and Tiburon, a lot of Marin and Sonoma plumbing is either old enough to corrode or buried where you'll never see the drip. Our hard local water and the big wet-to-dry soil swings between the rainy season and a Sonoma summer are hard on copper and on the lines run under foundations. John Owens Services has been tracing those hidden leaks since 1986, finding the source with acoustic and infrared tools before anyone opens a wall, a slab, or a finished floor.
We start non-invasively with acoustic sensors, thermal imaging, and in-pipe cameras to pinpoint the leak behind walls, under slabs, or in buried lines. That lets us open only the small area we need, and as licensed plumbers (CA #501853) we can repair it the same day.
A slab leak is a break in a water line running beneath your concrete foundation, and yes, they're common in the area's slab-on-grade and hillside homes, especially as soil shifts between wet winters and dry summers. We locate the exact spot before any concrete is touched so the repair stays contained.
We offer same-day service across Marin and Sonoma County, and most same-day calls are resolved within a few hours. If you smell gas or see active flooding, shut off the supply and call us right away.
Yes. Radiant floors are popular in remodeled Marin homes, and we use thermal imaging and pressure testing to find a leak in the embedded tubing without ripping up the whole floor, then plan the most targeted repair.
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.