By Greg Allan, tradesman and creator of Data First Coaching
What registration does a carpentry business need to start trading in New Zealand?
Most carpentry businesses do not need to register with any government agency just to start trading. According to Business.govt.nz, a sole trader only needs to let Inland Revenue know they have started working for themselves, using their IRD number, and the carpenter is then automatically covered for personal injury through ACC.
For a chippy who has spent years subcontracting fix-out or fit-out work to a builder on a day rate, this can feel like an anticlimax: there is no separate carpentry business licence to apply for and no form that makes the business official overnight. What does change is that the carpenter needs to set up a MyACC business account to pay their own ACC levies, rather than having them deducted as someone else's employee, because Becoming a sole trader explains that self-employed cover works differently to being on a builder's books.
Does a carpenter need a building licence for the work itself?
Registering with Inland Revenue does not settle the licence question. The Licensed Building Practitioners scheme sets out that doing or supervising restricted building work, which covers most structural and moisture-critical work on a house or small apartment building, requires a licensed building practitioner in the right class, and this applies whether or not the job needs a building consent.
Restricted Building Work (RBW) explains that this generally applies where the work involves the design, construction or alteration of a residential building, and relates to the primary structure, external moisture management or fire safety design. A deck, a pergola or a renovation that touches the primary structure can fall inside this definition even when the job itself looks small. Carrying out restricted building work says an unlicensed carpenter doing this work without supervision, or a licensed building practitioner working outside their class, can face an instant infringement fine, separate from the larger fines that can follow if it goes to prosecution. The licensed building practitioner also has to provide a Certificate of Design Work or Record of Building Work, and that obligation cannot be contracted out of. Not all building work is restricted: a detached garage generally sits outside the definition, though the Building Code still applies to every job regardless. Carpenters who want to hold the licence themselves can apply through the Ministry of Business, Innovation and Employment, which administers the scheme day to day, with the independent Building Practitioners Board handling appeals and discipline, under the Building Act 2004.
What other obligations kick in once there's a crew on site?
Once a carpentry business takes on an apprentice or a labourer, it becomes a PCBU, a person conducting a business or undertaking, under the Health and Safety at Work Act 2015, and that brings a primary duty of care a sole operator does not carry in the same way.
WorkSafe's guide to the Act explains that a PCBU must ensure, so far as is reasonably practicable, the health and safety of workers and that other people on or near the site are not put at risk by the work. On a framing job or a fit-out with scaffolding, power tools and a nail gun in regular use, that duty sits with the business, not only with whoever is swinging the hammer that day. Introduction to the Health and Safety at Work Act 2015 is the starting point for working out what that means for a particular crew and site.
Why does the paperwork feel like the easy part?
Registering with Inland Revenue, setting up ACC and checking whether a job is restricted building work can all be sorted in an afternoon. What trips carpenters up is what happens after that, once the business is quoting its own jobs instead of being handed a day rate and a set of plans by someone else.
Picture a carpenter who has just registered their own carpentry business after years of subcontracting fix-out and fit-out work to a builder. The quoting was always slow and manual, done the same way as when the builder's project manager wanted a number by the end of the day. With decks, pergolas and renovations each carrying dozens of small parts, brackets, posts, joist hangers, fixings, it was easy for one or two of them to be left off a quote and then be missing on site when the crew needed them. What changed was building a quoting template with a checklist for each type of job, covering every material down to the small hardware items, so the quote matched what actually had to be on the truck.
How does your own job data protect you once you're pricing fixed quotes, not day rates?
Once you are the one setting the price, every quote has to carry its own labour and materials as a real cost of sales, not an estimate carried over from the last job. The number that actually tells you whether a deck, a pergola or a renovation made money is your gross profit margin on that job, and it only tells the truth when it comes from your own data, not from memory of how the last one went.
A carpenter who has spent years being paid a day rate as someone else's labour line has never had to carry that number, because the builder carried it for them. Once the business is registered and trading on its own account, timber, hardware and offcuts all have to be counted against the job that used them, or the business can look profitable on paper while the bank account tells a different story. This is where a data first approach matters: instead of reconstructing job costs from memory at the end of the month, the carpenter builds a habit of capturing labour hours and material use as the job runs, fit-out by fit-out.
This is also where AI agents come in. An AI agent is software that does a job the way the owner would, using their own prices, their own wording and their own rules, rather than a generic template. For a carpentry business, an AI agent can sit inside the quoting and job costing process, working from the carpenter's own pricing and material lists, so nothing gets left off a deck or pergola quote and nothing gets missed when hardware is counted against the job it was bought for. A second AI agent can keep an eye on compliance paperwork, flagging when a job looks like it touches restricted building work or when a Certificate of Design Work or Record of Building Work needs to be chased from a licensed building practitioner, so the carpenter is not relying on memory to catch it.
This is general information, not legal, tax or employment advice. Check your own situation with the body named here or a qualified adviser.
Where can you check the current rules?
- Restricted Building Work (RBW), what counts as restricted building work and when a licensed building practitioner is required.
- Carrying out restricted building work, fines for unlicensed work and the Certificate of Design Work and Record of Building Work obligations.
- Becoming a sole trader, what a sole trader carpenter needs to tell Inland Revenue and ACC.
- LBP Handbook, how the licensed building practitioner scheme is run and who governs it.
- Restricted building work, examples of work that is not restricted, and the Building Code standard that still applies.
- Occupation Outlook, Carpenters and joiners, how carpenters can apply to become licensed building practitioners.
- Introduction to the Health and Safety at Work Act 2015, what a PCBU's primary duty of care involves.
How does Data First Coaching approach this?
Data First Coaching starts from the carpenter's own job data, not from a checklist of registrations to tick off. Through the Trade Business Intelligence, Greg Allan looks at what a carpentry business is actually capturing against each deck, pergola, fit-out or renovation, labour, materials, hardware, and where that picture breaks down once the business moves from being paid a day rate to pricing its own work. Greg often starts there by asking a carpenter “what is your method of doing things”, because a business running its own method needs that method defined and documented properly, not assumed. The how, built from each carpenter's own numbers, is worked through inside the Academy, among members who are open minded, innovative and willing to share what they learn, because the Trade Business Intelligence is powered by every member.
Looking for a business coach who starts from your numbers? Carpenter Business Coach or every answer for carpenters.
