Pinpoint, non-destructive water leak detection for San Anselmo homes — from Seminary-district Craftsmans to Sleepy Hollow ranch slabs.
In San Anselmo, a hidden leak rarely announces itself — it hides under a 1950s Sleepy Hollow slab, behind the plaster of a 1906 Seminary-neighborhood Craftsman, or in the aging galvanized lines of a Yolanda Park Victorian. Add the Ross Valley's wet winters, expansive clay soil, and hillside lots that shift and crack buried supply lines, and small drips turn into rot, mold, and runaway water bills fast. John Owens Services uses acoustic listening gear, thermal imaging, and pressure testing to find the exact spot — no guesswork, no tearing open walls you didn't need to open.
We use acoustic listening equipment, thermal imaging, and pressure testing to pinpoint the leak within inches before any wall or slab is opened — so the repair is targeted, not exploratory. As a licensed California contractor (#501853), we handle both the detection and the repair.
Yes. If your meter is spinning or you see active water damage, call us for same-day service across San Anselmo and Marin so we can isolate the line and stop the loss quickly.
Absolutely — slab-on-grade ranch houses are exactly where we use acoustic and thermal tools most. We trace the under-slab supply or recirculation line to one spot instead of jackhammering blind.
Many homes here still run on decades-old galvanized or early copper supply lines and cast-iron drains, and the Ross Valley's expansive clay soil shifts buried pipes over time. Our plumbers know these systems and can recommend targeted repair or repiping where it makes sense.
From the Marin coast to Sonoma wine country, we bring honest plumbing, heating & cooling to homeowners across both counties — based locally since 1986.