If you own or are thinking about installing a pool in New Zealand, there are some important pool regulations NZ homeowners need to understand before the pool goes in the ground, or even before buying a portable pool or spa.
The biggest requirement is pool safety. Under the Building Act 2004 and Building Code clause F9, residential pools that can be filled to a maximum water depth of 400mm or more generally need a physical barrier that prevents unsupervised access by children under five.
That applies to far more than a traditional concrete swimming pool. Above-ground pools, inflatable pools, temporary pools, indoor pools and many spa pools can all be covered by the rules.
There are also requirements around building consent, pool barrier inspections, gates, doors, windows, pool covers and, depending on your project, resource consent and other approvals.
The good news is that the basic rules aren’t particularly difficult to understand once you know what applies to your particular pool.
The most important pool rules in New Zealand
For most residential pool owners, these are the rules you need to remember:
- A residential pool with a maximum water depth of 400mm or more is generally covered by the residential pool safety requirements.
- The pool must have a physical barrier that restricts unsupervised access by children under five.
- Pool barriers need to comply with the Building Code.
- New pool barriers generally require building consent.
- Residential pools are generally inspected at least every three years.
- Pool gates need to open away from the pool and automatically close and latch.
- Climbable objects and features around the barrier can make an otherwise compliant fence fail.
- Portable, inflatable and temporary pools aren’t automatically exempt just because they aren’t permanent.
- Some small heated pools, including certain spas and hot tubs, can use a compliant safety cover instead of a surrounding fence.
- The requirements apply whether or not children actually live at the property.
There are some important exceptions and differences depending on the type and age of the pool, so don’t rely on the 1.2m fence rule alone.
Which pools need to comply with NZ pool regulations?
The rules are much broader than many people realise.
In-ground swimming pools
A conventional in-ground swimming pool is a residential pool and will generally require a compliant barrier if it can be filled to 400mm or more.
The barrier can be made from fencing, a suitable wall or part of a building, provided the complete arrangement complies with the Building Code.
Above-ground pools
Above-ground pools are covered too.
In some circumstances, the wall of an above-ground pool can form part of the barrier. Under the acceptable solution, the outside face of the pool wall can be at least 1.2m high and meet the other requirements.
However, you also need to consider how people get into the pool.
A removable ladder isn’t something you can simply rely on as a permanent safety solution. For pools installed under the current rules, access arrangements such as ladders need to be properly enclosed where required.
Also watch out for pumps, pipes, straps, steps, retaining walls and other objects that could give a child a way to climb into the pool.
Inflatable and portable pools
This is one of the biggest areas of confusion.
An inflatable or portable pool doesn’t escape the regulations because it can be packed away at the end of summer.
If the pool can hold water to a depth of 400mm or more, the residential pool barrier requirements can apply.
This includes temporary pools that are only going to be used for a short period.
In fact, Building Performance specifically warns that temporary and inflatable pools need to be treated seriously when they meet the relevant depth requirements.
So before buying that large portable pool for the backyard, check the barrier requirements first.
Spa pools and hot tubs
Spa pools are covered by the regulations too.
However, there is a special provision for certain small heated pools.
A small heated pool is generally a heated pool with a water surface area of 5m² or less, designed for therapeutic or recreational use.
Certain small heated pools can use a compliant safety cover as the barrier instead of a fence.
This is particularly useful for some residential spa pools.
The requirements are quite specific. For example, the pool generally needs sides at least 760mm above the adjacent ground or floor, the sides need to be non-climbable, and the safety cover needs to meet the Building Code requirements.
A normal lightweight spa cover shouldn’t automatically be assumed to be a compliant safety cover.
Inflatable spas
Inflatable spas are another common trap.
Just because an inflatable spa comes with a cover doesn’t mean that cover automatically satisfies the legal requirements for a pool barrier.
Most inflatable spas won’t meet all of the requirements for a small heated pool safety cover, so a compliant barrier may still be required.
If you’re buying an inflatable spa, check this before setting it up.
Indoor pools
Indoor pools aren’t exempt from pool safety requirements.
If a swimming pool is inside a house or another building, the building itself may form part of the barrier.
Doors and other openings leading from the building into the immediate pool area need to comply with the applicable requirements.
Depending on the arrangement, doors may need to self-close or have an appropriate audible alarm and self-latching arrangement.
An indoor pool isn’t automatically considered safe simply because it’s inside.
How high does a pool fence need to be in NZ?
For a typical residential pool barrier complying with F9/AS1, the barrier is generally at least 1.2m high.
But this is where pool owners sometimes get caught out.
The measurement isn’t simply “1.2m from the lawn”.
The surrounding ground, retaining walls, steps, raised gardens and other permanent features can affect the effective barrier height.
The barrier also needs to be designed so children can’t use nearby objects or features to climb over it.
For example, a 1.2m fence may not be compliant if there’s a raised garden, large planter, pool equipment or other climbable feature immediately beside it.
The safest approach is to think about the entire pool area, not just the fence itself.
Pool fence gaps and climbable features
A pool barrier isn’t compliant just because it looks strong.
Under the commonly used F9/AS1 solution, openings in the barrier generally must not allow a 100mm diameter sphere to pass through.
That includes gaps underneath the fence.
You also need to look carefully at the design of the fence itself. Horizontal rails, decorative features, nearby structures and objects can potentially provide climbing opportunities.
The area around the fence matters too.
Keep things such as:
- Outdoor furniture
- Pot plants
- Garden boxes
- Toys
- Ladders
- Pool equipment
- Storage boxes
- Trees and branches
- Raised garden beds
away from the barrier where they could help a child climb over it.
This is one of the things I would pay particular attention to when doing your own pool safety check. A fence can remain physically unchanged while the surrounding garden gradually makes it non-compliant.
Pool gate regulations in NZ
The pool gate is one of the most important parts of the entire barrier.
A compliant pool gate generally needs to:
- Be at least 1.2m high.
- Open away from the pool area.
- Self-close from any position.
- Self-latch automatically.
- Have a latch that isn’t readily accessible to young children.
- Remain clear of objects that could hold it open.
For many arrangements, the latch needs to be at least 1.5m above the ground or nearby objects if it is accessible from outside the barrier.
There are also specific requirements where the latch is mounted on the inside of the gate or is accessible by reaching over the gate.
Don’t underestimate how often gates cause problems during inspections.
A gate might work perfectly most of the time but fail because the hinge has dropped slightly, the latch has moved, the gate is dragging on the ground or a nearby plant is interfering with its movement.
Check the gate regularly rather than waiting for the three-year inspection.
Can a house wall be part of the pool barrier?
Yes.
A building can form all or part of a pool barrier, but the doors and windows involved need to meet the applicable Building Code requirements.
This can become complicated with:
- Sliding doors
- Bi-fold doors
- French doors
- Opening windows
- Indoor-outdoor living areas
- Large openings
- Doors opening directly towards the pool
This is an area where I recommend getting advice from your council or a suitably qualified professional before building the pool.
Don’t assume that an existing set of doors is automatically acceptable just because the house was built legally.
Pool regulations and building consent
Pool owners often assume the pool itself is the only part that needs consent.
That’s not the case.
Building work associated with residential pools can require building consent, and pool barriers are specifically outside the normal fence exemption.
In other words, the general rule that many residential fences up to 2.5m don’t need building consent doesn’t apply to a fence or barrier intended to restrict access to a residential pool.
Even where the pool itself qualifies for an exemption from building consent, the pool barrier can still require consent.
This is particularly important with small above-ground and temporary pools.
Before you install a pool or build its barrier, check with your local council.
What about older swimming pools?
Older pools can be slightly more complicated.
The current rules came into effect on 1 January 2017, when the previous Fencing of Swimming Pools Act was replaced by new provisions in the Building Act.
Some existing pools and barriers can continue to comply under the requirements that applied when they were originally approved.
That doesn’t mean every old pool is automatically grandfathered forever.
Existing pools must still have a barrier that complies with the applicable requirements, and councils can identify non-compliance during inspections.
If you’re buying a property with an older pool, I recommend checking the building consent and pool compliance history rather than assuming the fence is legal because it’s been there for years.
Pool inspections every three years
Residential pool barriers are generally subject to inspection at least once every three years.
The inspection can be carried out by your territorial authority or, where accepted, an independently qualified pool inspector.
The purpose isn’t simply to check whether the fence still exists. The inspector is looking at whether the barrier continues to meet the legal requirements.
Things that can cause problems include:
- Gates that don’t self-close.
- Gates that don’t latch properly.
- Climbable objects.
- Damaged fencing.
- Excessive gaps.
- Changes to landscaping.
- New steps or retaining walls.
- Unapproved alterations.
- Access through buildings.
- Pool ladders.
- Changes to spa covers.
You don’t need to wait for the council inspection to find these problems.
A quick inspection of your own pool barrier every few months is a sensible habit.
Do all councils have the same pool rules?
The important point is that the main residential pool safety requirements are national, rather than Auckland, Wellington or Christchurch having completely separate pool fencing laws.
The Building Act and Building Code provide the national framework.
However, the way your local council administers the rules can differ.
Councils maintain pool registers, arrange inspections, set fees and deal with non-compliance. Local planning rules can also affect whether you need resource consent for parts of a pool project.
Here are some examples.
| Area | What to be aware of |
|---|---|
| Auckland | Auckland Council operates a pool barrier inspection programme and allows inspections through the council or an independently qualified pool inspector. |
| Wellington | Wellington City Council provides guidance covering residential pools and spas, including three-yearly inspections and barrier requirements. |
| Christchurch | Christchurch City Council requires residential and small heated pools to be registered unless an acceptable-cover exemption applies, and schedules inspections approximately every three years. |
| Hamilton | Hamilton City Council maintains a pool register and carries out three-yearly inspections. |
| Tauranga | Tauranga City Council also operates a three-yearly private pool safety inspection programme. |
| Dunedin | Dunedin City Council requires applicable pools and spas to be registered and carries out three-yearly barrier inspections. |
| Rotorua | Rotorua Lakes Council operates a residential pool compliance programme under the national Building Act and F9 requirements. |
The practical lesson is simple: national pool rules don’t mean you should ignore your local council.
Before installing a new pool, contact the council responsible for your property and check whether there are additional planning, drainage, earthworks or other local requirements.
Do I need resource consent for a swimming pool?
This depends on the property and the work involved.
Building consent and resource consent are different things.
A building consent deals with whether building work complies with the Building Act and Building Code.
Resource consent is related to whether a proposed activity complies with your local district or regional plan.
Depending on the site, a pool project can involve issues such as:
- Earthworks
- Retaining walls
- Property boundaries
- Site coverage
- Stormwater
- Drainage
- Excavation
- Water discharge
- Protected areas
- Coastal or sensitive environments
The requirements can therefore vary between properties.
Don’t assume that because your neighbour installed a pool without resource consent, your property will automatically have the same requirements.
Emptying and draining your pool
There are also environmental and drainage considerations when you empty a pool.
You shouldn’t simply discharge chlorinated or chemically treated pool water wherever is convenient.
Local rules can apply to the discharge of water into stormwater systems, wastewater systems, land or waterways.
This can vary considerably depending on where you live, particularly between urban and rural properties.
Before draining a large pool, check your local council or water authority’s requirements.
This is particularly important after a heavy chemical treatment or when the pool water contains high levels of chlorine or other treatment chemicals.
Pool regulations for rental properties
If you’re renting a property with a pool, the rules still apply.
Landlords have responsibilities for making sure the pool barrier complies with the Building Act.
Tenants also have responsibilities.
For example, if you notice that a pool gate isn’t closing properly, the issue should be reported to the landlord promptly. Tenants shouldn’t simply leave a faulty gate and assume someone else will notice it.
If you’re a tenant thinking about installing a portable pool, get written permission from the landlord first and check the barrier requirements before buying it.
A portable pool can still create legal obligations.
Electrical and pool equipment regulations
Pool electrical work is another area where DIY isn’t worth taking chances.
Swimming pools combine water, people and electrical equipment, so electrical installations need to meet the applicable electrical safety requirements.
This includes equipment such as:
- Pool pumps
- Salt chlorinators
- Pool lights
- Heat pumps
- Spa equipment
- Outdoor power outlets
- Pool control systems
Use appropriately qualified electrical workers for electrical work around pools.
Don’t modify pool electrical equipment, wiring or protection systems because a DIY solution looks straightforward.
The same principle applies to gas pool heating. Gasfitting work should be carried out by an appropriately licensed gasfitter.
What about pool water quality?
The residential pool barrier rules are primarily about preventing young children from gaining unsupervised access to the water.
They aren’t the same thing as regulations governing public swimming pools.
If you operate a commercial pool, public swimming pool, accommodation facility, school, health facility or another pool used by the public, additional requirements can apply.
These can involve building, health and safety, water quality, operating procedures and local authority requirements.
So don’t assume that the rules for a private backyard pool cover a commercial or public swimming pool.
Common pool regulation mistakes
Assuming a temporary pool doesn’t need a barrier
This is probably one of the most common misunderstandings.
If the pool meets the relevant depth threshold, being temporary doesn’t automatically exempt it.
Measuring the fence from the wrong place
A fence may look like it’s 1.2m high, but retaining walls, raised gardens or other features can affect the effective height.
Putting furniture next to the fence
A chair, table or storage box might seem harmless, but it can provide a convenient climbing point.
Assuming the spa cover is automatically a safety cover
A standard spa cover isn’t necessarily a compliant F9 safety cover.
Check the actual requirements before relying on it.
Forgetting about the gate
The gate is often the part of the barrier that receives the most wear.
Check the hinges, latch, closing speed and surrounding area regularly.
Changing the pool area after approval
Adding landscaping, steps, retaining walls, doors, windows or other structures can affect compliance.
If you make significant changes around the pool, check whether they affect the barrier.
Assuming council inspection means you don’t need to check the fence
Three-yearly inspections don’t mean the barrier only needs to be safe every three years.
The owner and other responsible parties have ongoing responsibilities.
What should you check before buying a pool?
If you’re planning a new pool, I’d work through these questions before you spend money on the pool itself:
- How deep can the pool hold water?
- Does it fall under the residential pool requirements?
- What type of barrier will be required?
- Can the property physically accommodate a compliant barrier?
- Will existing buildings or boundary fences form part of the barrier?
- Where will the gate go?
- Will landscaping or retaining walls affect the barrier?
- Will the pool need building consent?
- Could the project require resource consent?
- How will the pool be drained or emptied?
- Are electrical or gas installations required?
- What will the local council require for registration and inspections?
This is much easier to sort out before the pool is installed than after you’ve discovered that the planned location doesn’t work.
When to call a professional
You don’t need a professional for every little pool maintenance job.
Cleaning the pool, testing the water and maintaining normal pool equipment are things many owners can handle themselves.
I’d get professional advice when you’re dealing with:
- A new pool installation
- Pool barrier design
- Building consent
- A complicated boundary fence
- Retaining walls
- Structural changes
- Building walls or doors forming part of the barrier
- Electrical work
- Gas pool heating
- Difficult drainage or discharge issues
- A failed council inspection
- A complicated older pool with unclear approval history
If you’re unsure whether your proposed setup complies, your local council is a good place to start.
Frequently Asked Questions
What is the minimum pool depth requiring a barrier in NZ?
The residential pool provisions apply to pools with a maximum water depth of 400mm or more. If a residential pool can be filled to 400mm or more, the relevant barrier requirements need to be considered.
Does a portable pool need a fence in NZ?
It can. Portable and temporary pools aren’t automatically exempt. If the pool can be filled to the relevant 400mm depth, it generally needs a physical barrier that restricts unsupervised access by children under five.
Does a spa pool need a fence in NZ?
Many spa pools need a barrier, but some small heated pools can use a compliant safety cover instead. Generally, the small heated pool needs a water surface area of no more than 5m², sides at least 760mm high and non-climbable, along with a compliant safety cover.
How often do pool fences need to be inspected in NZ?
Residential pool barriers are generally inspected at least every three years. The inspection can be carried out by the local territorial authority or, where accepted, an independently qualified pool inspector.
Do pool fences need building consent in NZ?
Yes, a pool barrier generally requires building consent. The normal exemption for many fences up to 2.5m high doesn’t apply to fences used to restrict access to residential pools.
Do the pool rules depend on whether I have children?
No. The residential pool barrier requirements apply regardless of whether children live at the property. The purpose is to restrict unsupervised access by children under five, including children who may visit.
Final thoughts on pool regulations NZ
The main thing to remember about pool regulations NZ is that the rules are primarily about preventing young children from gaining unsupervised access to residential pools.
The requirements apply to much more than traditional in-ground swimming pools. Above-ground pools, portable pools, inflatable pools, temporary pools, indoor pools and spas can all be covered.
For most owners, the important jobs are making sure the barrier is properly designed, keeping gates working correctly, removing climbable objects, maintaining the barrier and keeping up with the required inspections.
If you’re planning a new pool, check the barrier requirements before you buy the pool or start construction. Your local council can also tell you about local consent, planning, registration and inspection requirements.
Getting the pool regulations right from the beginning is much easier than trying to fix a non-compliant pool area later.
