Article summary
Understand New Zealand's pool fencing safety requirements, including height, gaps, and gates, to keep your pool compliant.
- Category:
- regulations
- Read time:
- 3 min
- Published:
- 18 February 2026
- Written by:
- My Homes Fencing Expert
Quick answer: any pool or spa in New Zealand that can hold more than 400mm of water must have a compliant safety barrier — generally at least 1.2m high, with no gaps wider than 100mm, no climbable footholds within 1.2m of the barrier, and a gate that is self-closing and self-latching. These requirements come from the Building Act and its pool-barrier standard, and Auckland Council actively inspects them.
Pool fencing is the one area of fencing where the rules are genuinely strict and non-negotiable, because they exist to prevent child drownings. Here's what a compliant barrier looks like and the details an inspector will be checking on your property.
What Counts as a Pool — and the 400mm Rule
The rules apply to any 'residential pool' that can contain water more than 400mm deep — that includes in-ground and above-ground swimming pools, and most spa pools and hot tubs unless they have a compliant lockable cover. Even some large temporary or portable pools fall under the rules once they hold water past that 400mm mark.
That threshold catches a lot of homeowners by surprise, particularly with spa pools, so if you're adding any water feature people can get into, it's worth confirming whether a barrier is required before you install it.
The Barrier Specs an Inspector Checks
A compliant barrier is at least 1.2m high measured on the outside, with no gaps in or under it wider than 100mm, and no horizontal rails or objects on the outside that a child could use as a foothold within 1.2m of the top. Gates must open away from the pool, be self-closing from any position, and self-latch, with the latch release positioned high enough (typically around 1.5m) to be out of a young child's reach.
The 'non-climbable zone' is where a lot of otherwise-good fences fail — a nearby retaining wall, pot plant, BBQ or even a low garden feature can effectively lower the barrier. Inspectors look at the whole area around the fence, not just the fence itself.
Common Failures and Getting Signed Off
The most common compliance failures we see are gates propped or wedged open, latches and self-closing hinges that have worn out and no longer catch reliably, climbable objects left inside the non-climbable zone, and gaps that have opened up as an older timber fence has moved. Any one of these can fail an inspection even if the fence looked fine when it was built.
Auckland Council inspects residential pool barriers on a regular cycle (generally every three years). If you're building a new pool barrier or bringing an older one back up to standard, we build and repair to the current compliance requirements and can talk you through exactly what the inspector will look for so sign-off is straightforward.
Frequently Asked Questions
At least 1.2m, measured on the outside of the barrier, with no gaps wider than 100mm and no climbable footholds within 1.2m of the top. Gates must be self-closing and self-latching.
Usually yes — if a spa or hot tub can hold more than 400mm of water it needs a compliant barrier, unless it has an approved lockable safety cover that meets the standard.
Residential pool barriers are inspected by Council on a regular cycle, generally every three years. Between inspections it's the owner's responsibility to keep the gate, latch and non-climbable zone compliant.
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