Removing a spa pool and its concrete pad is largely a DIY-friendly project for a capable homeowner — but there are important legal and safety steps you must not skip. Before you pick up a sledgehammer, you need to have the electrical supply and any plumbing properly disconnected by licensed professionals. Once that's sorted, the physical demolition and disposal is generally something you can tackle yourself with the right tools and a bit of planning.
Step 1 — Electrical Disconnection (Restricted Work)
This is the most critical step and cannot be done by a homeowner. Spa pools in New Zealand are typically hard-wired to a dedicated circuit, often with a weatherproof isolator switch nearby. Disconnecting this supply is restricted electrical work under the Electricity Act 1992 and associated regulations and must be carried out by a registered electrician.
Your electrician will:
- Isolate and disconnect the circuit at the switchboard
- Remove or make safe the wiring back to the board
- Issue a Certificate of Compliance (CoC) for the work
Never attempt to disconnect wiring yourself. Contact the Electrical Workers Registration Board (EWRB) if you want to verify a sparky's registration. You can find a local registered electrician on tradedirectory.co.nz.
Step 2 — Plumbing Disconnection
If your spa pool is connected to a mains water supply or drains into the household drainage system, those connections may need to be capped or removed by a licensed plumber or drainlayer. Check with the Plumbers, Gasfitters and Drainlayers Board (PGDB) to verify any tradesperson's licence.
Many spa pools simply drain onto the lawn or into a stormwater channel — in that case, you may just need to disconnect a hose fitting, which is straightforward. However, if there's any doubt, get a plumber to check before you start draining.
Step 3 — Drain the Spa Pool
Once disconnected, drain the spa completely. Use the built-in drain valve if it has one, or a submersible pump. Be mindful of where the water goes — large volumes of chlorinated water should not be discharged directly into stormwater drains in one go. Check with your local council about acceptable disposal. Letting it soak slowly into a lawn area is often the most practical option.
Step 4 — Removing the Spa Shell
Most spa pool shells are made from fibreglass or acrylic over a foam-insulated cabinet. They are bulky but not always as heavy as you'd expect. Here's a typical approach:
- Freestanding spas: These can sometimes be lifted out whole with enough helpers (4–6 people) or a hired hiab/crane truck if access is tight.
- Cutting up the shell: Use an angle grinder or reciprocating saw with a suitable blade to cut the shell into manageable sections. Wear eye protection, a dust mask (fibreglass dust is hazardous — see WorkSafe NZ guidance on fibreglass), gloves, and long sleeves.
- Remove the pump, heater, and pipework — these can often be sold or recycled separately.
Tip: Check with your local council or a waste transfer station about disposing of fibreglass — it is not accepted in standard kerbside recycling.
Step 5 — Breaking Up the Concrete Pad
Concrete pads under spa pools are typically 100–150 mm thick. Breaking one up is hard work but very doable as a DIY job.
Tools you'll need
- Electric demolition hammer (jackhammer) — hire one from a local hire centre such as Bunnings or Mitre 10
- Mattock or pry bar for lifting broken sections
- Wheelbarrow and skip bin
- Safety boots, gloves, safety glasses, and hearing protection
Process
- Score the perimeter with a circular saw fitted with a diamond blade to create clean edges.
- Work the jackhammer across the slab in sections, breaking it into pieces you can lift (aim for chunks under 20–25 kg).
- Load broken concrete into a hired skip bin — concrete cannot go in general rubbish. Many skip bin companies accept clean concrete separately, sometimes at a lower rate.
Rebar: If the slab contains steel reinforcing bar (rebar), you'll need bolt cutters or an angle grinder to cut it free. Rebar can be taken to a metal recycler.
Do I Need a Building Consent?
Removing a spa pool and its pad is generally considered minor demolition work and is likely exempt from building consent under Schedule 1 of the Building Act 2004. However, always confirm with your local council before starting — rules can vary and some councils have specific requirements. Visit MBIE Building Performance for general guidance on consent exemptions.
Disposing of Waste Responsibly
| Material | Disposal Option |
|---|---|
| Concrete | Hired skip bin (concrete-only) or transfer station |
| Fibreglass/acrylic shell | Transfer station (check locally) |
| Pumps & motors | Metal recycler or e-waste facility |
| Pipework (PVC) | Transfer station |
| Rebar/steel | Metal recycler |
When to Call a Professional
Consider hiring a demolition contractor if:
- The spa is in a confined or difficult-to-access area
- The concrete pad is unusually thick or heavily reinforced
- You're not confident using power tools safely
- You want the whole job done quickly and waste removed in one go
A professional demolition contractor will have the equipment, experience, and waste disposal contacts to handle the job efficiently. You can find qualified local demolition contractors on tradedirectory.co.nz.
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