Plumber for Apache Dream Townhomes, Apache Junction, AZ

In a detached house, exploratory opening is inconvenient. In attached housing it is potentially somebody else's drywall, and that makes electronic leak detection genuinely the right first step rather than an optional extra.

We start with meter isolation to confirm a leak exists and measure the loss rate, then isolate hot from cold and branch by branch to narrow which line is involved. Line tracing maps where the pipe actually runs inside the wall — which in attached construction is frequently not where you would assume from the fixture positions.

Acoustic listening pinpoints the escape point, and thermal imaging confirms hot-side leaks and shows how far moisture has already travelled through the assembly. That last part matters a great deal in a shared wall, because moisture spreading laterally reaches the neighbouring unit before anyone sees it.

The output is a marked spot, photographs, thermal images and a documented loss rate — which is exactly what an association or an insurer will want.

This is the question that causes the most friction, and it is worth establishing before work starts rather than after.

The general pattern in attached housing is that the unit owner is responsible for plumbing within their own unit, while the association is responsible for common elements — which frequently includes main lines, stacks and anything within the structural walls. But the specifics live in the governing documents and they vary enormously.

Get a copy and read the maintenance responsibility section before you commit to a repair. If the failure is in a common element, you may be arranging work the association should be paying for.

We are happy to provide documentation suitable for an association claim or an insurance claim: photographs, the marked location, thermal imagery, the measured loss rate and a written scope. In our experience that documentation is what resolves the responsibility question quickly, and its absence is what turns it into a dispute.