The non-climbable zone, or NCZ, is the invisible part of your pool barrier, and misunderstanding it is one of the most common reasons otherwise perfect fences fail inspection.
A fence only works if a child cannot get over it. The standards therefore protect a zone around the barrier, typically a 900mm arc measured from the top of the fence on the outside, that must be free of anything a young child could use as a foothold or handhold. Depending on the barrier and the applicable standard, there are also requirements on the inside of the fence to stop a child climbing back out onto the top rail.
More than most owners expect:
Because it changes without anyone touching the fence. You landscape, you buy a new outdoor setting, a tree grows a branch, and the barrier that passed two years ago now fails. Inspectors assess the zone on the day, not the day the fence was built.
Walk the outside of your fence and imagine a determined four-year-old. Anything within roughly a metre of the fence that offers a step up goes on the move list. Then check inside the fence for the same near the top rail. This costs nothing and is the single highest-value preparation you can do, as covered in our inspection preparation guide.
Some situations genuinely need an inspector's eye: sloping ground that changes effective heights, boundary fences with structures on the neighbour's side, and which standard applies to your pool's age. That is what a professional fence inspection resolves, with exact measurements rather than estimates.
Ready when you are
Fixed price confirmed before we book, inspection completed on site, and your certificate lodged for you.