Quick answer
No — installing a kitchen is not automatically restricted building work, and a straight cabinet fit-out does not need a Licensed Building Practitioner. Fitting carcasses, a benchtop and a splashback, and dropping a sink back into the same position, all sit outside the LBP scheme. You only cross into restricted building work when the job touches the home's primary structure — taking out a load-bearing wall to open the kitchen up — or its weathertightness, such as cutting a new window over the bench or ducting a rangehood through external cladding. That work must be designed and carried out or supervised by an LBP. Separately, and no matter how small the kitchen is, the electrical must be certified by a registered electrician and the plumbing and gas by an authorised person under their own regimes.
Key points
- A kitchen's cabinetry, benchtop and splashback are joinery, not restricted building work, so the install itself needs no LBP and no Record of Work.
- Restricted building work is anything critical to keeping the home structurally sound or weathertight, and only that structural or external-envelope work pulls an LBP into a kitchen job.
- Removing a load-bearing wall to open the kitchen onto the living area is restricted building work and almost always needs a building consent as well.
- The electrician and the plumber or gasfitter certify their own work under their own laws regardless of the LBP question — a registered electrician issues a Certificate of Compliance and an authorised person handles the plumbing and gas.
- A like-for-like kitchen replacement in the same footprint is usually consent-exempt, but adding a kitchen where there wasn't one is not, so confirm the scope with your council before you order anything.
The cabinets aren't restricted. The wall behind them can be.
A landlord in Papakura rings up wanting the tired melteca galley in a two-bedroom unit pulled out and a fresh one dropped in — same footprint, sink stays under the window, oven where the oven has always been. He has read something online about Licensed Building Practitioners and restricted building work, and he is worried he is about to trip a consent he never budgeted for. He hasn't. That job is a fit-out, not building work, and no LBP signs anything. Two streets over, someone in a 1960s brick-and-tile wants the wall between the kitchen and the lounge gone so the whole back of the house opens up. Same trade on site, same week, completely different legal picture.
"Do you need an LBP to install a kitchen" is really two questions wearing one coat. Most of a kitchen — the carcasses, the doors, the benchtop, the splashback, the handles — is joinery, and joinery is not restricted building work. What can pull an LBP into the job is the building around the kitchen: the structure you cut into and the external envelope you break through. Get clear on which of those you are actually doing and the answer falls out. What follows is the split, checked against building.govt.nz and lbp.govt.nz, plus the two trades — electrical and plumbing — that certify their own work no matter how modest the kitchen is.
What restricted building work actually means
Restricted building work, or RBW, is the work the government has decided is too important to a home's safety to leave to an unlicensed hand. It is defined around two things: the primary structure — the framing, bracing and beams that carry the vertical and horizontal loads and keep the building standing — and external moisture management, which is the polite term for weathertightness, everything that keeps water out of the building fabric. There is a third slice for fire safety design in multi-unit buildings. RBW applies to residential houses of any height and to small-to-medium apartment buildings under ten metres, and it must be designed and carried out, or supervised, by a Licensed Building Practitioner. Each LBP who does it hands over a Record of Work for what they built and a Certificate of Design Work for what they designed.
Notice what is not in that definition: cabinets, benchtops, tapware, appliances, tiling. None of the joinery that makes a kitchen a kitchen is structural or weathertightness work. That is the whole reason a supply-and-install kitchen firm can walk in, strip out and refit without an LBP looking over its shoulder. The LBP scheme is about the bones of the house, not the fit-out that sits inside them.
A straight cabinet fit-out: no LBP, no Record of Work
If your kitchen job is what most kitchen jobs are — old boxes out, new boxes in, benchtop templated and dropped, splashback fitted, appliances connected — you are not doing restricted building work and there is no LBP requirement on the joinery at all. Nobody is issuing a Record of Work for hanging a soft-close drawer. This holds even for a full replacement to a new layout, as long as you are not touching the structure or the external cladding to get there. The pieces that fall clearly outside RBW are:
- Removing and installing cabinet carcasses, doors, drawers and internal fittings.
- Templating and installing a benchtop, whether it is laminate, engineered stone or solid surface.
- Fitting a splashback, handles, and soft-close or push-to-open hardware.
- Reconnecting the existing sink, tap and appliances in the same positions.
- Non-structural changes inside the room that do not alter bracing, load paths or the weathertight envelope.
This is where a lot of owners talk themselves into a consent they never needed. A kitchen refit inside an existing room, with the plumbing and power staying roughly where they are, is a fit-out. It is worth understanding how the trades actually stack up on site, because the sequencing — sparky and plumber in and out around the cabinetmaker — is what makes an unconsented fit-out run clean, not any paperwork with the council.
When the kitchen tips into restricted building work
The moment the job reaches past the cabinetry and into the house itself, the picture changes. The two everyday ways a kitchen becomes restricted building work are structural and weathertightness. Structural is the big one on the isthmus and in the older south and west Auckland stock: people want the wall between kitchen and living gone so the space breathes. If that wall is load-bearing — and in a lot of last-century homes the wall dividing those rooms is carrying something — then removing it and putting a beam in is restricted building work and, on top of that, needs a building consent. That is not a cabinetmaker's call; it needs an LBP and usually an engineer's design. We cover the reality of exactly this in taking a wall out to open the kitchen and living onto each other.
Weathertightness is the quieter one people forget. Cut a new window in over the bench for the view, and you have altered the external moisture management of the wall — restricted building work. Push a rangehood duct out through the cladding to vent it properly, and you have penetrated the weathertight envelope, which is why running a rangehood duct out through the wall is a job that deserves real thought rather than a hole and a smear of silicone. The kitchen might be the reason for the work, but it is the building envelope that determines whether an LBP has to design and certify it.
| What you're doing | Restricted building work? | Who signs it off |
|---|---|---|
| Cabinets, benchtop, splashback in the existing room | No | Nobody — it's a fit-out |
| New layout, same footprint, no structural or cladding change | No | Nobody — still a fit-out |
| Removing a load-bearing wall for open-plan | Yes | LBP, usually with engineer + consent |
| New window over the bench in an external wall | Yes | LBP (weathertightness) |
| Ducting a rangehood out through the cladding | Yes | LBP for the envelope work |
| New or moved circuits and power points | Not RBW — separate regime | Registered electrician (CoC) |
| New or relocated sink, water and waste | Not RBW — separate regime | Authorised plumber / drainlayer |
The electrician and the plumber certify their own work — always
Here is the part that trips people who fixate on the LBP question: the electrical and the plumbing sit in their own worlds entirely, and they get certified every single time, however small the kitchen. Any prescribed electrical work — a new circuit for the oven, an added row of power points, moving the cooktop supply — has to be done by a registered electrician holding a current practising licence, and they must issue you a Certificate of Compliance confirming the work is safe and up to standard. That is not an LBP document and it has nothing to do with the LBP scheme. Keep the CoC; you may want it at insurance or sale time.
Plumbing, gasfitting and drainlaying work the same way under their own law. Any plumbing on the kitchen — the sink waste, the water supply, connecting a dishwasher, moving a fixture — has to be carried out by an authorised person under the Plumbers, Gasfitters and Drainlayers Act. If there is gas, say a gas hob, the gasfitting is certified and gets its own gas safety and energy work paperwork. None of this is optional, and none of it depends on whether the wider job is restricted building work. A kitchen that never goes near a load-bearing wall still has an electrician and a plumber certifying their bits.
New kitchen versus like-for-like: the consent question underneath
Sitting under all of this is a second question — do you need a building consent — and for kitchens the answer usually turns on whether you are replacing or adding. Replacing an existing kitchen in the same space, with the sink kept in roughly the same position and comparable fixtures going back in, generally falls inside the Schedule 1 exemptions and needs no building consent, provided the plumbing is done by an authorised person. Auckland Council's own guidance treats a kitchen remodel that leaves the sink where it is as the kind of low-risk work that does not need a consent.
Adding a kitchen where there was not one — turning a rumpus into a second living area with a kitchenette, or fitting out a minor dwelling — is different. New sanitary fixtures and new plumbing runs are not covered by the like-for-like exemption, and putting a second kitchen into a house can also raise a change-of-use or an extra-household-unit question that the council cares about. That is a consent conversation, not a fit-out. If your project is a self-contained unit, read up on the consent exemption for a granny flat kitchen, because the 2026 rules changed what you can build without a consent while still requiring LBPs and authorised trades to do the work.
Nine kitchens out of ten I fit, the only certificates on the job are the sparky's and the plumber's. The tenth one someone wants a wall gone, and that's a different conversation — that's an LBP and an engineer before I bring a single box on site.
Different parts of a kitchen answer to different regimes.
What goes wrong
The failures cluster at the two edges. On one edge, owners overpay for a consent and a designer on a job that was always a plain fit-out, because a builder or a forum told them a kitchen needs a consent — it doesn't, unless it touches structure, the envelope or new plumbing. On the other edge, and this is the dangerous one, someone knocks a wall out on a nod, treats a load-bearing wall like a partition, and puts a beam in with no LBP, no engineer and no consent. That surfaces years later, usually when the house sells and a LIM comes back thin. Living with the risk of unconsented kitchen and structural work turning up at sale is a worse position than the consent ever was.
The other recurring mess is the electrical and plumbing being done cash by someone unlicensed to save a few hundred dollars. No Certificate of Compliance, no plumbing sign-off, and a rental that fails its next inspection or an insurer that has grounds to argue at claim time. Ducting is a quiet one too: a rangehood vented into the ceiling cavity instead of out through a properly flashed penetration, which is both a weathertightness problem and, done through the cladding without care, restricted building work skipped. And in apartments, people template a benchtop before anyone has checked whether the wall or the riser they are working around is common property — the Records of Work an LBP hands over only exist if an LBP was engaged in the first place.
What to ask before you sign
- Are we touching any wall that could be load-bearing, or only the cabinetry inside the room?
- Is the sink staying in its position, or are we moving water and waste — and is the plumber an authorised person?
- Who is the registered electrician, and will I get a Certificate of Compliance for the electrical work?
- Are we cutting the external cladding for a duct or a window, and if so who is the LBP?
- Is this a like-for-like replacement or am I adding a kitchen the council would treat as a new fixture set?
- For a unit-title or cross-lease property, has the body corporate or co-owner sign-off been confirmed?
- Will the CoC, plumbing certificate and any Record of Work be handed to me on completion?
Frequently asked questions
Do I need an LBP just to fit new kitchen cabinets?
No. Fitting cabinets, a benchtop and a splashback is joinery, and joinery is not restricted building work, so it does not need a Licensed Building Practitioner and no Record of Work is issued for it. An LBP only becomes necessary if the same project also alters the home's primary structure or its weathertightness. A plain refit of an existing kitchen room sits entirely outside the LBP scheme.
Does replacing a kitchen need a building consent in Auckland?
Usually not, if you are replacing an existing kitchen in the same space and keeping the sink in roughly the same position with comparable fixtures. That kind of like-for-like work generally falls within the Schedule 1 exemptions, as long as the plumbing is carried out by an authorised person. You do need a consent if you add a kitchen where there wasn't one, move plumbing significantly, or alter structure, so confirm your specific scope with Auckland Council before ordering.
Is removing the wall between my kitchen and living room restricted building work?
If the wall is load-bearing, yes. Removing it and installing a beam alters the primary structure, which is restricted building work and must be designed and carried out or supervised by an LBP, usually with an engineer's design and a building consent. If the wall is a non-load-bearing partition it is not restricted building work, but you should have someone competent confirm which it is before anyone starts, because getting that wrong is dangerous and expensive.
Who certifies the electrical and plumbing in a kitchen install?
The registered electrician certifies their own work by issuing a Certificate of Compliance for any prescribed electrical work, such as new circuits or power points. The plumbing, gasfitting and drainlaying must be done by an authorised person under the Plumbers, Gasfitters and Drainlayers Act, and gas work gets its own certification. These regimes are separate from the LBP scheme and apply to every kitchen regardless of whether any restricted building work is involved.
Can I install my own kitchen without any licensed trades?
You can build and fit the cabinetry yourself, because that joinery is not restricted building work and not restricted trade work. What you cannot legally do yourself is the prescribed electrical work or the mains-pressure and fixed plumbing and gas — those must go to a registered electrician and an authorised plumber or gasfitter who certify their work. Any structural or weathertightness change still needs an LBP, so a full DIY kitchen usually still involves at least two licensed trades.
The short version, and where we fit
A kitchen install is not restricted building work, and the cabinetry does not need a Licensed Building Practitioner. The LBP question only turns up when the job reaches into the structure or the weathertight envelope of the house, and even then it is the wall or the window that is restricted, not the kitchen. Underneath sits the consent question — replacement usually exempt, addition usually not — and running alongside all of it, always, are the electrician and the plumber certifying their own work. Sort those three threads out early and the compliance side of a kitchen stops being frightening.
That is the way we run it from the East Tamaki workshop: supply and install under one contract and one invoice, with the electrical and plumbing sequenced in and certified, and a straight answer on whether your job stays a fit-out or tips into work that needs an LBP. Send us the scope — whether it is one unit in Manukau or a run of townhouses off the plans — and we will come back inside 24 hours with a trade-priced number, plus GST, and tell you up front which certificates your particular kitchen will need.