The cost of finding out after the pour
In Perth, honed concrete around a pool lands at roughly $190 to $210 per square metre to lay. Once it has cured over a leaking return line or a hairline crack in a buried fitting, the cost stops being about laying concrete and starts being about removing it — demolition and disposal at around $185 per square metre, plus the plumber’s work to find and rejoin the line, plus relaying the patch.
For a four-square-metre patch — roughly the strip alongside a skimmer or above a manifold — the typical post-pour remediation runs $2,500 to $6,000. A pressure test before the pour costs $245 to $495 and produces a signed certificate either way.
The honest framing: a pressure test will not stop a leak from forming later. It proves the pipes hold on the day — so if water shows up six months from now, you know it is something that happened after the pour, not something the pour buried.