As more people choose Northland for its unmatched lifestyle, building your own place is becoming an increasingly popular option across the region. Projects range from large family homes to farm sheds and tiny houses.
If you’re considering a project, a clear, well-considered contract is the single most important tool for keeping the project on track. Surprises do happen in construction, often through nobody’s fault. Disputes tend to arise from assumptions that were not written down, details left unfinalised, or expectations that were not aligned at the outset. There are three key areas to consider carefully when signing a building contract: Quality, Time and Cost.
When it comes to quality, the more detail and completeness in the underlying design and specifications, the greater the cost certainty. The price of a concept drawing brought to life can vary wildly depending on material selections, geotechnical reports and key decisions about fittings and fixtures. If those things have not been agreed up-front, they can lead to nasty (expensive) surprises as selections are finalised during the build. Taking the time to lock in these choices before signing a contract can significantly reduce the risk of budget blowouts.
Timing is another area that deserves careful attention. Many agreements refer loosely to start dates or build durations without clearly defining them. Ask when construction is expected to begin, what conditions need to be satisfied before work starts, and how long the project should reasonably take. Clarity around these points helps manage expectations – and finances if you are borrowing to fund the project.
When thinking about cost, be careful of comparing apples with oranges. We recommend spending careful time understanding exactly what the builder has included in the contract price. Two prices that appear similar on the surface may differ significantly in the scope of work being offered. Homeowners should look closely at what is specifically included and, just as importantly, excluded. Items such as site works, drainage, landscaping, or connection to services are often areas where assumptions differ. Watch out for “provisional sums”, which are estimates only and may change, especially if the project continues over a longer period or inflation is running hot. A good builder should be prepared to contact suppliers and lock in prices on most items to give you cost certainty, if that is important to you.
We have also noticed a trend of smaller projects being undertaken with minimal (or no) paperwork. Builders may offer to start quickly on a “charge up” basis, with a rough estimate, or sometimes with no discussion of price at all. While Kiwis hate having the awkward money conversation, taking a “she’ll be right” approach carries real risk. Without a written agreement covering scope, timing, and cost, both parties are left exposed if expectations diverge.
It also can be easy to focus too much on whether someone seems like a good builder, and are personable and presentable, and not enough on what happens if they can’t deliver. Ultimately, a well-prepared contract is not about mistrust. It is about clarity.
Investing time upfront to confirm the details of design, timing, and scope is one of the most effective ways to ensure a smoother, more predictable building experience. If you have any questions or concerns about a construction contract, we always recommend taking legal advice.
How can we help?
Our experienced, specialist construction law team will be happy to talk through your situation and review your contracts, whether existing or before you sign. Please give us a call.
Our thanks to Simon Davies-Colley and Reid McLean for writing this article which was first published in the Mahurangi Matters in May 2026. Simon Davies-Colley is a Director at WRMK Lawyers and specialises in construction law and dispute resolution, and Reid is a lawyer at WRMK Lawyers and specialises in dispute resolution and civil litigation.
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