Under the floor
A warm floor or unexplained water at the baseboard deserves a source look.
Pipes in or under a slab can leak for a long time before anyone sees a puddle. The first signs are often heat, sound, a high bill, or damp carpet at an interior wall.
Do not jackhammer on a hunch.
Opening a slab is expensive and disruptive in a living suite. Investigation should narrow the run first.
Separate irrigation, waste, and domestic supply.
A wet parkade or a damp carpet can be several systems. Naming the system changes who pays and who repairs.
Access still matters.
Some buildings have accessible lower-level piping. Others do not. The finding should say what could be tested and what could not.
Questions people ask
Is a hot spot on the floor always a leak?
No. Heating piping and some electrical loads create heat. Context matters.
Can a slab leak affect the suite below?
In stacked concrete buildings, water can appear at the ceiling or at a joint far from the pipe.