A handyman can legally carry out a good range of bathroom renovation tasks in New Zealand — but there are clear legal boundaries around plumbing, drainlaying, and electrical work that must be respected. Understanding where those lines fall will help you plan your renovation safely, legally, and without costly mistakes.
What a Handyman Can Legally Do in a Bathroom
Handymen (and women) in New Zealand are not a licensed trade in the same way plumbers or electricians are, so there is no single governing body that defines exactly what they can do. However, the law is clear about what they cannot do, which effectively defines their scope by exclusion.
Generally, a competent handyman can legally carry out:
- Tiling — floor and wall tiles, including waterproof membrane preparation (though they must follow manufacturer specifications and the NZ Building Code)
- Painting and finishing — walls, ceilings, trims, and cabinetry
- Vanity and cabinet installation — fitting flat-pack or pre-made bathroom furniture
- Mirror and accessory installation — towel rails, toilet roll holders, shelving
- Replacing a toilet seat
- Siliconing and caulking — around baths, showers, and basins
- Replacing tap washers (in some circumstances — see plumbing section below)
- Flooring installation — vinyl, laminate, or engineered timber
- Patching and plastering — minor GIB repairs and preparation
- Ventilation fan replacement — if it is a like-for-like swap on an existing circuit with no new wiring (check with an electrician if unsure)
What Is Restricted Work — Plumbing and Drainlaying
This is where it gets serious. Under the Plumbers, Gasfitters and Drainlayers Act 2006, sanitary plumbing and drainlaying are restricted trades in New Zealand. Only a licensed or certifying plumber may legally carry out work such as:
- Installing or moving a toilet, basin, bath, or shower waste
- Connecting or modifying water supply pipes
- Installing or altering drainage connections
- Fitting a new shower mixer or tapware that requires cutting into pipework
A homeowner can do some basic plumbing maintenance on their own home (such as replacing a tap washer or unblocking a drain), but they cannot do this work for payment, and a handyman doing it for payment is illegal. Always check with the PGDB if you are unsure whether a specific task is restricted.
What Is Restricted Work — Electrical
Under the Electricity Act 1992 and associated regulations, electrical work is restricted to registered electricians in New Zealand. The Electrical Workers Registration Board (EWRB) oversees this. In a bathroom, this means a licensed electrician must carry out:
- Installing or moving power outlets, light fittings, or switches
- Installing an extractor fan that requires new wiring
- Installing a heated towel rail that is hardwired
- Installing an electric shower unit
- Any work within zone distances from water sources (bathrooms have strict zone rules)
A handyman should never attempt electrical work in a bathroom. The risks — electrocution, fire, and insurance voidance — are very real.
Building Consent — Do You Need One?
Many bathroom renovations are Schedule 1 exemptions under the Building Act 2004, meaning they do not require a building consent — for example, like-for-like fixture replacements or cosmetic work. However, if you are moving walls, changing the layout significantly, or altering drainage, a building consent may be required.
Always confirm with your local council before starting work. MBIE Building Performance has useful guidance on when consent is and isn't needed.
Waterproofing — A Critical Step
Bathroom waterproofing is one of the most important parts of any renovation. New Zealand's Building Code (specifically clause E3 — Internal Moisture) sets requirements for wet area waterproofing. Poor waterproofing is one of the leading causes of hidden moisture damage in NZ homes.
A handyman can apply waterproofing membranes, but they must use products and methods that comply with the Building Code and manufacturer specifications. BRANZ publishes excellent guidance on wet area construction that both tradespeople and homeowners should be familiar with.
Healthy Homes and Rental Properties
If you are renovating a bathroom in a rental property, be aware of the Healthy Homes Standards, which include requirements for ventilation and moisture control. Any work must meet these standards, and restricted work must still be done by licensed tradespeople regardless of the property type.
When to Call a Professional
Hire a licensed plumber for any work involving water supply or drainage connections. Hire a registered electrician for any electrical installation or modification. For larger renovations involving structural changes, you may also need a Licensed Building Practitioner (LBP).
A good handyman will know their limits and will tell you honestly when a job needs a licensed tradesperson. Be cautious of anyone who claims they can do everything in a bathroom renovation without referring any work to licensed professionals — that is a red flag.
You can find qualified local handymen, plumbers, and electricians on tradedirectory.co.nz to make sure the right person is doing the right job.
Sources & Further Reading
- Plumbers, Gasfitters and Drainlayers Board — Restricted Work
- Electrical Workers Registration Board — What Is Restricted Electrical Work
- MBIE Building Performance — Building Consent Exemptions
- BRANZ — Wet Area Construction Guidance
- Tenancy Services — Healthy Homes Standards
- Licensed Building Practitioners
Master Painters NZ member
