Most everyday handyman jobs around the home don't need a building consent — but some definitely do, and getting it wrong can cause real headaches when it comes time to sell or insure your property. Understanding the difference between exempt work and restricted or consented work is one of the most useful things a Kiwi homeowner can know.
What Is a Building Consent?
A building consent is formal approval from your local council to carry out building work. It exists to make sure work is done safely and meets the NZ Building Code, which sets minimum standards for things like structural strength, weathertightness, plumbing, drainage, and fire safety. Without consent where it's required, your work is technically illegal — and you may be required to remove or redo it at your own cost.
Work That Is Exempt (No Consent Needed)
Schedule 1 of the Building Act 2004 lists work that is exempt from building consent. This covers a wide range of common handyman tasks, including:
- Painting, wallpapering, and decorating
- Replacing like-for-like floor coverings (carpet, vinyl, timber)
- Repairing or replacing existing gutters and downpipes
- Fixing or replacing fences under 2.5 metres high (some conditions apply)
- Installing or replacing kitchen cabinets and benchtops (not moving plumbing)
- Replacing windows or doors in the same opening with the same size
- Minor repairs to existing structures (patching weatherboards, replacing a few roof tiles)
- Garden sheds and small detached buildings under certain size and use thresholds
However — and this is important — exempt does not mean unregulated. Even exempt work must still comply with the NZ Building Code. Always confirm with your local council whether your specific job qualifies as exempt, as interpretations can vary.
MBIE Building Performance has a helpful online tool and guidance documents to help you check whether your project needs consent.
Work That Almost Always Needs Consent
Some jobs will nearly always require a building consent, no matter how straightforward they seem:
- Structural alterations — removing or modifying load-bearing walls, adding beams
- New rooms or extensions — adding a bedroom, garage, or sleepout
- Decks over 1.5 metres above ground (and sometimes lower, depending on your council)
- Retaining walls over 1.5 metres high
- New or relocated plumbing fixtures (moving a toilet, adding a bathroom)
- Relocating or adding gas appliances (restricted work — see below)
- New electrical circuits or switchboard work (restricted work — see below)
- Changing the use of a building (e.g., converting a garage to a habitable room)
Restricted Work: Electrical, Plumbing, and Gas
Some work isn't just about consent — it's legally restricted to licensed tradespeople regardless of consent status.
- Electrical work: In New Zealand, most electrical wiring, connections, and installations must be carried out by a registered electrician. The Electrical Workers Registration Board (EWRB) oversees this. Homeowners can do very minor tasks (like replacing a light fitting or socket in some circumstances), but the scope of what is permitted is limited — confirm with the EWRB what homeowners are legally allowed to do, but if in doubt, hire a registered electrician.
- Plumbing and drainlaying: Connecting or altering sanitary plumbing, drainage, or gas fitting must be done by a licensed tradesperson registered with the Plumbers, Gasfitters and Drainlayers Board (PGDB). This is non-negotiable — unlicensed plumbing or gas work is illegal and dangerous.
Safety note: Never attempt gas or electrical work yourself unless you are certain it falls within what homeowners are legally permitted to do. When in doubt, always call a licensed professional.
A Quick Reference Guide
| Job Type | Consent Needed? | Restricted Work? |
|---|---|---|
| Painting & decorating | No | No |
| Replacing like-for-like windows | Usually no | No |
| New deck over 1.5m high | Yes | No (but LBP may be required) |
| Removing a load-bearing wall | Yes | No (but LBP required) |
| Adding a new power circuit | Possibly | Yes — registered electrician |
| Moving a toilet or drain | Yes | Yes — licensed plumber |
| Installing a heat pump | Sometimes | Yes — for electrical connection |
| Replacing gutters | No | No |
Licensed Building Practitioners (LBPs)
For restricted building work — which includes structural work, weathertightness work, and certain other tasks on houses — you must use a Licensed Building Practitioner (LBP). This is separate from the consent process. An LBP must sign off on restricted building work even when a consent is in place. Your handyman should be able to tell you whether they hold an LBP licence and in which category.
When to Call a Professional
If your job involves any structural changes, new plumbing, gas, or electrical work, or if you're simply unsure — it's always worth calling a qualified tradesperson before you start. A good handyman or builder will tell you upfront whether consent is needed and can often help you navigate the council process. BRANZ is also an excellent resource for technical building guidance in New Zealand.
You can find qualified, trusted local handymen and tradespeople on tradedirectory.co.nz who are familiar with your region's council requirements.
Bottom line: When in doubt, ask your council first. A quick phone call or email to your local council's building department can save you thousands of dollars and a lot of stress down the track.
Master Painters NZ member
