What are the steps to build a house in NZ?
In order: set an all-in budget, get finance pre-approval, secure the land, choose a design and builder, sign a written contract, get resource consent if the site needs it, get building consent, build, pass the council inspections, and get the code compliance certificate before final payment and handover. The first four steps decide most of the cost.
Each step below says what happens, who does it and what tends to go wrong. The on-site part, from foundation to handover, has its own guide: the build stages, in order.
1. Set an all-in budget, not a build price
The builder's contract price is one line. Add the land, site works, retaining, service connections, council development contributions, consent fees, driveway, fencing, landscaping, window coverings and a contingency of at least 10%. People who budget the contract price alone are the ones who run out of money at fix-out.
Our build budget calculator adds those lines up for your region, and the cost-to-build page shows the average consented cost per square metre by region from Stats NZ data.
2. Get finance pre-approval for a construction loan
A construction loan is paid out in stages as the house goes up, not in one lump. Talk to a bank or mortgage adviser before you commit to land, because the deposit, the valuation and the contract type all affect what they will lend, and some land deals go unconditional fast.
If you are a first-home buyer, check how a KiwiSaver first-home withdrawal fits the deal before you sign. On a land-then-build purchase it can usually be used only once, at the land settlement.
3. Secure the land, or choose a house-and-land package
Either buy a section and build on it, or buy a house-and-land package where the developer or builder supplies both. Before going unconditional on any section, read the LIM, the title and any covenants, and get a geotechnical view on the ground. Slope, fill and soft ground are where build budgets quietly double.
Covenants on new subdivisions often control house size, cladding, fencing and even roof colour, and some require the developer to approve your plans. Read them before you fall for a plan that breaks them.
4. Choose a design and a builder
Three routes: a group home builder's standard plan (cheapest and fastest), a design-and-build firm that adapts a plan to your section, or an architect or designer working with a builder you choose. Get at least two quotes on the same specification, so you are comparing builders rather than finishes.
Check the builder's Licensed Building Practitioner status on the public LBP register, and whether they will take out a Master Build or Halo guarantee on your job. Our guide to what those guarantees actually cover explains the difference.
5. Sign a written building contract
For residential building work of $30,000 or more, the Building Act requires a written contract, and the builder must give you a disclosure statement and a checklist before you sign. Fixed price is the safer shape for a first build. Read the PC sums, the variation clause and the payment schedule line by line.
Pay a lawyer who does building contracts to read it. An hour or two of their time is small against the contract sum.
6. Resource consent, if the site needs one
Resource consent is about what the district plan allows on the site: height, site coverage, boundary setbacks, earthworks and so on. Many standard houses on new subdivisions don't need one; infill, steep, coastal or heritage sites often do. Your designer should tell you early, because it adds weeks to months.
7. Building consent
Building consent is the council checking your plans against the Building Code. The council has 20 working days to decide once it has a complete application, but the clock stops each time it asks for more information, so a messy application takes far longer. Your designer or builder usually lodges it.
Ask for a Project Information Memorandum (PIM) at the same time if the council offers one. It flags hazards, services and development contributions for the site before they surprise you.
8. The build
Foundation, frames and trusses, roof and cladding, lock-up, insulation and lining, fix-out, then completion. A standard single-storey group-home build commonly takes six to nine months on site once consent is issued; architectural builds and sloping sites take longer, and weather and trade availability move every timeline.
9. Council inspections
The council inspects at set points listed on your building consent, typically foundations, pre-cladding, pre-line, plumbing and drainage, and a final. If an inspection fails, the work is fixed and re-inspected before the next stage, and a delay at pre-line is the one that costs the most time.
10. Code compliance certificate and handover
Once the final inspection passes and the paperwork is in, the council issues the code compliance certificate (CCC). Your bank usually releases the last payment against it. Walk the house with the builder, write up every defect, and hold the final payment until the list is worked through, not just acknowledged.
The Building Act gives you a defect repair period of 12 months after completion, during which the builder must fix defects you notify in writing, and implied warranties that run much longer. Our guide to the code compliance certificate covers what the council needs and how long it takes.