Hiring and scoping a tradie in NZ

Hiring a tradesperson is not about luck. It is a small buying decision, and like any good buying decision it starts with knowing exactly what you are buying. When a job goes sideways, the cause is almost always a fuzzy scope, an unverified hire, or terms that were never written down. Fix those three things and you remove most of the risk.

Describe the problem, not the fix

The most common scoping mistake is telling a trade what solution you want instead of what problem you have. If you say "I need a new hot water cylinder" you may be quoted for a replacement, when the real issue was a slow leak a repair could fix for less. Say what you observe instead: "the hot water has been unreliable and there is a damp patch on the wall."

A good brief tells the trade:

• What the problem is, in plain words, with photos and measurements if you can.
• What you want to end up with the outcome, not the method.
• What is in and what is out so there is no surprise about who buys materials or does the cleanup.
• Any limits, like access constraints, timing or a budget range you are comfortable stating.

Be honest about the budget too. Hiding a number makes it harder for the trade to tell you if the job is realistic at that level, which is exactly the information you need.

Check who you are hiring

A friendly recommendation or a shiny logo is not a credential. Before anyone starts, verify the basics:

• Licence and registration. Regulated trades in New Zealand have authorities and registers you can check, and a genuine professional will be happy to be checked. Match the licence to the exact work, not to a general claim of being "qualified."
• Insurance. Ask what cover they hold, such as public liability and any warranties on work. This matters if something goes wrong or causes damage.
• References. Ask for a couple of recent, similar jobs and actually contact them. One clear, current reference beats a dozen online reviews.
• GST. Confirm whether the quoted price includes GST, so the number is the number.

The scope of work is the contract

The most valuable document in the whole job is a written scope of work, sometimes called a quote or proposal. It protects you and the trade, and it settles almost every dispute before it starts. A solid one includes:

• The starting point. What currently exists and what condition it is in.
• The exact work. What will be done and what will not be done, stated specifically.
• Materials and finish. What gets supplied, by whom, and to what standard or brand level.
• Timeline. A start date and an indicative duration, plus when completion is expected.
• The price and terms. The total, whether it includes GST, how payment is staged, and how changes or extras are agreed.

If the job is more than a small amount, never hire on a handshake. A written scope is not paperwork for its own sake, it is the shared understanding that keeps you and the trade on the same page through a job that always takes longer and reveals more than the first estimate.

Agree how changes are handled

Every home job reveals something once the walls open. The risk is a running tab of extras nobody agreed to. Set the rule up front: any change to the scope or price is agreed in writing before it is done. That rule is what stops "while I am here" work from quietly doubling your bill. Some trades allow small variations up to a point without approval, and that is worth knowing, but the price-affecting choices should always come back to you.

Pay sensibly

How you pay matters as much as who you hire. Reasonable practices include a modest deposit tied to real costs like materials, staged payments that match completed stages, and paying the final amount only when the job is done and you are happy. Be wary of anyone who wants most of the money before work begins. That is the shape of most trade disputes and scams.

For larger jobs, ask about progress payments that map to milestones, and withhold a share until you have had a chance to check the completed work. A fair trade will expect this.