Building a house is complex job, and there’s no simple answer to “how much will it cost?” because every house, site and owner’s taste is different. What we can do is show you what drives the cost, so you can plan with your eyes open.
With house values having softened, many people are weighing up whether to build or buy. Buying an existing home can stretch a budget a long way, but building gives you choice: the layout, the orientation, the specification and the finish. You also know your home will meet today’s building standards, and a Lockwood home will be low maintenance for many years to come.
The costs below will help you work out what that choice looks like for you.
Your budget is mostly decided by the complexity of the design and the level of finish you choose.
Economical: simple forms, standard fixtures and basic joinery.
Medium: custom design, stone benches and large joinery.
High: complex forms, a difficult site and a bespoke fit-out.
Just as important, the price of the house isn’t the cost of the project. The biggest budget surprises are usually the planning and finishing costs, which are normally left out of per-square-metre rates.
Lockwood isn’t entry-level housing. Our specification sits at the higher end of the scale, but our proven building system and in-house design team mean you get architectural style without the typical custom-architect price tag.
This checklist gives you an idea of costs that likely sit outside of your building contract and should be considered as part of your total budget;
Before building starts: design, engineering and consent fees (see below); council development contributions and connection fees, which vary a lot by district; demolition, site clearing and tree removal; legal fees, plus valuation and loan set-up fees if you’re borrowing.
Around the house: driveway and parking; landscaping, fencing, retaining and outdoor living areas such as decks and patios; letterbox, clothesline, outbuildings and garden sheds.
Inside, finishing off: interior fittings not included in your contract, such as window coverings; extras like solar, a home battery or an EV charger.
Carrying costs: interest on money drawn down during construction; insurance, and rates on the land while you build; temporary accommodation or overlapping rent or mortgage payments, plus storage and moving costs.
The more customised and complex the design, the more you can expect to invest at this step.
Full design and build: You engage a designer or architect to create a plan from scratch.
Modified plan: If you can modify an existing design you’ll save money because less time goes into developing the concept.
Standard plan: the most cost-effective option. You can still make it your own through interior fittings.
Concept plans are prepared first, and are enough to estimate your build cost. Once the design is finalised, an LBP designer prepares the consent plans for council. You’ll need site specific reports for this work to be completed.
| Item | Indicative cost |
|---|---|
| Design fees | 8–15% of construction cost |
| Structural engineering | $3,000–$15,000+ |
| Geotechnical report | $1,500–$8,000+ |
| Topographic survey | $1,500–$4,000 |
| Building consent fee (council) | $5,000–$20,000+ (varies by council and project value) |
| Resource consent (if required) | $3,000–$30,000+ (highly variable) |
| LIM report | $200–$400 |
| Source: Building Guide NZ, October 2026 |
The site is often the biggest unknown. These are the things that typically push costs up:
| Item | Indicative cost |
|---|---|
| Earthworks and excavation | $5,000–$50,000+ (highly site-specific) |
| Concrete slab or pile foundation | $15,000–$60,000+ |
| Retaining walls (if required) | $500–$1,500+ per m² of wall |
| Services connections (water, wastewater, power, etc) | $5,000–$30,000+ |
| Source: Building Guide NZ, October 2026 |
The Lockwood building system is prefabricated and manufactured at our Rotorua facility. Your components arrive on site with cladding, insulation and interior lining already in board form, and joinery is included. That brings several benefits:
Simpler to cost: with so much included in the components, there’s less to price separately and fewer surprises.
Faster to build: pre-cut components are quick to assemble, which saves on labour.
Built to last: the system is designed to meet today’s building code and stay low maintenance for many years.
Kitchens, bathrooms, flooring and heating are where your choices have the biggest effect on the final cost. Two homes with the same floor plan can land hundreds of thousands apart depending on what you select. The ranges below show how wide that spread can be.
| Item | Indicative cost |
|---|---|
| Kitchen | $15,000–$80,000+ |
| Bathrooms (each) | $10,000–$40,000+ |
| Flooring | $50–$200+ per m², depending on material |
| Heating system | $5,000–$25,000+ |
| HVAC (heat pump/ventilation) | $5,000–$20,000+ |
| Smart home / AV | $5,000–$50,000+ |
| Source: Building Guide NZ, October 2026 |
Whatever the final number, keep a contingency of at least 15% in your budget from the start, and think of it as money already spent. If you don’t need it, that’s a bonus.
Material costs rose sharply through 2021 and 2022. The latest data suggests costs aren’t coming down. The Cordell Construction Cost Index, reported by OneRoof, showed costs up 1.7% over the quarter and 4.8% over the year, the fastest quarterly rise since late 2022. Waiting for prices to fall is a gamble the numbers don’t favour, so a firm, fixed-price quote on a finalised design is the best protection from further increases.
Any guide, including this one, can only give you ranges. The best next step is a figure based on your site and your design. Bring us your concept plans, sketches or ideas and we’ll give you a site-specific estimate.
Our independent friends at Building Guide NZ have free planning resources, a cost guide and a feasibility tool, and they’ve been helping NZ homeowners since 1989. They’re a great place to continue your research.
Talk to our team about a site-specific estimate.
Figures are sourced from Building Guide NZ, October 2026. They are a guide, not a quote.
