Swim spa or pool: which one should you get in Australia?

The criteria that actually separate a swim spa from a pool

Before any price, five questions decide this. Answer them first and the comparison mostly makes itself.

1. What will you do in the water? A swim spa has you swimming in place against a current. A pool gives you length to swim, turn and play. Neither is better; they are different activities.
2. How warm do you want it, and for how many months? A swim spa is built to be heated all year. Most backyard pools are heated for part of the year or not at all.
3. Will you move? A portable swim spa can be sold or taken with you. An inground pool stays with the house.
4. What can your ground and access take? 6,000 to 10,000 litres of water weighs 6 to 10 tonnes before the shell, and it all sits on one slab. An inground pool needs excavation and truck or crane access instead.
5. Were you counting on skipping the fence? If yes, read the next section before anything else, because that is the assumption that usually fails.

The quotable version: a swim spa is a pool you swim in place in, and the law treats it as a pool.

If you are weighing a small inground option instead, our guides to plunge pool designs and cost and above-ground vs inground pools cover the adjacent choices.

Does a swim spa need a pool fence?

In the four states we checked, yes. The trigger everywhere is water depth over 300mm, and a swim spa is far deeper than that.

NSW. The Swimming Pools Act 1992 defines a spa pool to include “any excavation, structure or vessel in the nature of a spa pool, flotation tank, tub or the like”, and section 20 exempts a spa pool from the barrier only if access to the water is restricted when not in use. Clause 9 of the Swimming Pools Regulation 2018 sets the standard: a lockable child-resistant structure (such as a door, lid, grille or mesh) of substantial construction, securely fastened. Councils read that narrowly. Camden Council states that “swim spas, plunge spas and plunge spa pools – the inclusion of the word spa does not grant the exemption”, and that a spa with an area for swimming or aquatic play must be surrounded by a child-resistant barrier.

Victoria. VBA Practice Note 05-2018 lists “spas, jacuzzi, hot tubs and swim spas” among the pools covered by barrier requirements. The City of Ballarat answers the lid question directly: “No, a lockable lid is not a safety barrier and does not meet legal requirements.”

Queensland. The QBCC states that if a portable pool or spa can hold at least 300mm of water the pool safety laws apply, and Brisbane City Council lists “spas (including those with lockable lids)” among pools that must meet fencing regulations. Every pool must also be on the QBCC pool register.

Western Australia. Building and Energy states that private swimming pools, including spa pools and portable pools, with water more than 30cm deep must have a safety barrier. Its page does not offer a lid alternative.

The quotable version: the lockable-lid exemption is a NSW rule for relaxation spas, and a swim spa is not one. The rules on what the barrier must look like are in pool fence rules by state, and the above-ground specifics — the wall-as-barrier test and ladder clearance — are in above-ground pool barrier rules.

Do I need council approval or a building permit for a swim spa?

Usually yes, and the rule differs by state more than the barrier rule does.

NSW: the 2,000-litre line. The City of Newcastle states that there is exempt development for spas and portable pools less than 2,000L in capacity under Subdivision 30 of the Codes SEPP, and that anything else needs development consent through a complying development certificate or a development application. Camden Council puts it the same way: any portable pool or spa over 2,000 litres requires prior formal approval. At 6,000 to 10,000 litres, a swim spa is three to five times over that line. All spas must also be registered on the NSW Swimming Pool Register.

Victoria: relocatable is the word that matters. The VBA's practice note on when a building permit is required (BP-01, December 2023) states that assembling or installing a swimming pool or spa and associated barrier that is all capable of being relocated is exempt from a building permit, while those that are not relocatable need one. The same note says a relocatable pool or spa must still have a compliant barrier and must be registered with council if erected for three or more consecutive days. So a portable swim spa behind a relocatable barrier may not need a permit, but a portable swim spa behind a new glass fence on footings does, because the fence is not relocatable. Some councils state the rule more broadly: the City of Ballarat says you must get a building permit before you install a pool or spa that can hold more than 30cm. Confirm with a building surveyor before you buy. Our Victorian pool building permit guide covers the process.

A Victorian number that is not an approval trigger. The 680-litre figure you may see is an energy rule: a spa pool of 680 litres or more must have a time switch on its circulation pump. It has nothing to do with the barrier or the permit. See whether you need a timer on your pool heater.

Queensland and WA. Brisbane City Council says building a pool requires approval arranged through a building certifier. WA Building and Energy says all swimming pools and spas need building approval, and local governments then inspect the barrier at least every four years.

The quotable version: in NSW a swim spa is three to five times over the 2,000-litre exempt limit, so it needs consent like a pool. For the wider state picture see whether an above-ground pool needs a building permit.

Swim spa vs pool cost, running cost and footprint

Every price below is published by a business that sells the product, or is taken from our own guides that label them the same way. There is no regulated price for either.

The running-cost figures disagree widely, and both come from sellers. One retailer’s $1,800–$3,600 a year is made up of $100–$200 a month in energy (its example is a well-insulated 5–6m swim spa with a heat pump in a Sydney-type climate, used two or three times a week in winter), plus about $50–$70 a month in chemicals and a small water cost. Another publishes about $1.60 a day with an external heat pump, about $584 a year, and $12–$16 a day with a built-in element heater. The heating method moves the cost more than anything else, so ask for the heating method in writing.

The price that is not in the price. A swim spa's published price covers the spa. Before you compare, ask what is included for the slab, the electrical circuit, delivery and crane access, and the barrier. The fence is the item most often left out when the purchase is framed as avoiding a pool. Our pool fence cost guide covers what fencing costs.

For the pool side of the comparison, what a pool costs in Australia and pool running costs per year give the full ranges.

Who a swim spa is wrong for, and who a pool is wrong for

The honest answer is that each option is a bad buy for someone specific.

A swim spa is probably wrong for you if:

• You bought it to avoid the fence or the approval. In NSW, Victoria, Queensland and WA it needs a compliant barrier, and in NSW it is over the 2,000-litre exempt limit.
• You want to swim laps with turns. You swim against a current in a unit a vendor lists at 4.5 to 6 metres long. Some people love that; people who want to swim lengths usually do not.
• Several children will use it at once. 6,000 to 10,000 litres is a small body of water for a group.
• It would sit on a deck or balcony that has not been checked by an engineer. Six to ten tonnes of water is a structural load, not furniture.

An inground pool is probably wrong for you if:

• You expect to move within a few years and want to take the asset with you.
• You want warm water all year and are not planning to pay for heating a much larger volume.
• Your access or ground makes excavation hard — see what pool excavation costs and small backyard pool ideas.

The quotable version: buy a swim spa for warm water and swimming in place; do not buy one to avoid a pool fence, because you will still need one.

If the answer is a pool after all, you can compare quotes from pool builders covering your area, including Sydney, Melbourne and Brisbane.

Common questions

Sources

• NSW Swimming Pools Act 1992 — s 3 definitions and s 20 spa exemption
• NSW Swimming Pools Regulation 2018 — cl 9 spa pool lockable structure
• Camden Council — swimming pool compliance, spa pools and swim spas
• City of Newcastle — swimming pool and spa development consent
• VBA Practice Note 05-2018 — Swimming pool and spa safety
• VBA Practice Note BP-01 — When is a building permit required (20 December 2023)
• City of Ballarat — pools and spas safety
• QBCC — swimming pool safety laws
• Brisbane City Council — pool regulations
• WA Building and Energy — swimming pool and spa safety barrier requirements
• Published swim spa price guide, spaworld.com.au (vendor)
• Published swim spa running cost guide, spaworld.com.au (vendor)
• Published spa running cost guide, sapphirespas.com.au (vendor)

General information only, current at 2026-09-24. Pool rules differ by state and by council, and penalty amounts are updated regularly. Confirm your own obligations with your council or a registered inspector before acting.