Foundation Leak Detection in BC

 🔄 Reviewed and maintained by the AnyLeak team — August 2026. Rated 5 stars by BC customers.

Water in a foundation is the leak that threatens the whole building. It seeps through cracks and cold joints, wicks up through slabs, and pools against footings — rotting finishes, feeding mould, and over time undermining the structure itself. The hard part is telling where it enters and why: a plumbing leak under the slab, groundwater through the wall, or surface water finding a path in. AnyLeak.ca has located foundation leaks across British Columbia since 1999, non-invasively, so the right repair happens in the right place.

What we trace at the foundation

• Cracks, cold joints and tie-rod holes — the classic entry points, mapped with thermal imaging and moisture mapping.
• In-slab and under-footing plumbing — pressurized lines pinpointed by acoustic and tracer-gas methods; see slab leak detection.
• Groundwater vs supply leak — a meter test separates a treated-water loss from natural groundwater; see basement leak detection.
• Below-grade and exterior water paths — grade, drainage and buried services against the wall, located before excavation.

Rain-driven foundation leaks

On the BC coast, foundation leaks are often seasonal — dry all summer, weeping every November. That pattern points at groundwater and surface drainage rather than plumbing, and weather-correlation testing confirms it before anyone digs a footing. Diagnosing the actual mechanism is the difference between sealing a crack and re-grading a lot.

Every property type

We investigate foundations on houses, strata and condo buildings, and commercial and institutional structures, with GPR where the slab needs imaging first (concrete scanning). Findings come as a written report supporting insurance claims and a precise repair scope — your contractor opens one spot, not the whole perimeter. See our process.

Across BC

Foundation leak detection throughout the province — Metro Vancouver, the Fraser Valley, Vancouver Island and the Interior; see service areas.

FAQ

Is it a foundation leak or a slab plumbing leak? Different fixes — we test for both: pressurized-line behaviour vs weather-correlated groundwater.

Do you repair the foundation? We locate and document the source; your contractor repairs the marked point. Non-invasive location first.

Water at the foundation? Call (604) 269-5325 for a free phone consult or book an assessment.