Choosing the right builder is one of the most important decisions you'll make for your home. A good builder delivers quality work on time and on budget. A bad one can turn your dream project into a nightmare. Here's how to get it right.
Check Their Licence
In New Zealand, anyone doing restricted building work must be a Licensed Building Practitioner (LBP). This includes structural work, weathertightness work, and fire safety systems. You can check a builder's LBP status on the Building Performance website. Never hire an unlicensed builder for work that requires an LBP — it's illegal and you won't be covered by the residential building guarantee.
Get Multiple Quotes
Always get at least three written quotes for your project. A good quote should include a detailed breakdown of materials and labour, a timeline, payment schedule, and what's included and excluded. Be wary of quotes that are significantly lower than others — it often means corners will be cut.
Check Reviews and References
Online reviews on platforms like Call A Tradie give you genuine feedback from past clients. Look for patterns — one bad review among many good ones might be an outlier, but consistent complaints about communication or quality are red flags. Ask the builder for references and actually call them.
Verify Insurance
Your builder should have public liability insurance (minimum $1 million) and contract works insurance. These protect you if something goes wrong during the build. Ask to see certificates of currency, not just policy numbers.
Get a Written Contract
Never start work without a written contract. For residential work over $30,000, a written contract is required by law under the Building Act. The contract should cover the scope of work, price, payment schedule, timeline, variations process, and dispute resolution. The NZ government provides standard building contracts you can use.
Communication is Key
The best builders are clear communicators. During the quoting process, note how quickly they respond, how clearly they explain things, and whether they listen to your needs. Good communication during the quote stage usually means good communication during the build.
Red Flags to Watch For
Be cautious of builders who demand large upfront payments (more than 10-15% deposit), don't provide written quotes, are reluctant to show their LBP registration, have no online presence or reviews, pressure you to make quick decisions, or can start immediately with no waiting list — good builders are usually booked out weeks in advance.