A domain name feels like a five-minute decision — type your business name into a registrar, see if it’s free, buy it. Mostly it is that simple. But it’s also one of the few things genuinely painful to change later — every business card, every quote, every backlink you’ve earned points at the old one — so it’s worth thirty seconds of actual thought before you commit.
.co.nz or .com?
For a business that only serves customers in New Zealand — a Nelson plumber, a Marlborough café, a Golden Bay accommodation business — .co.nz is almost always the better default. It signals “local NZ business” immediately, it’s what your customers instinctively expect to type, and it doesn’t cost meaningfully more than .com.
.com makes more sense if you’re selling nationally or internationally, or if the brand itself is the point (a product you’re hoping people search for by name regardless of country). Most brochure-site small businesses reading this fall into the first category, not the second.
You don’t have to choose only one — plenty of businesses register both and point the .com at the .co.nz site, mainly so a competitor can’t sit on the other version of their name. Cheap insurance if the budget allows it.
What to do if your exact name’s taken
This happens more than people expect, especially with common trade names (“Nelson Plumbing,” “Top of the South Builders”). A few reasonable options, roughly in order of preference:
- Add a genuine descriptor —
smithplumbingnelson.co.nzrather than a name with no relation to the business, which is confusing for anyone trying to find you again - Check if the existing registration is actually active — a domain sitting on a placeholder page with no real business behind it can sometimes be bought from whoever holds it, through a registrar’s marketplace or a direct approach
- Avoid clever misspellings or hyphens as a first resort —
plum-bing.co.nzorplumbeing.co.nzmight get you the name you wanted, but they’re genuinely hard to say aloud and get typed correctly from a business card or a radio ad
Keep it short enough to say out loud
The real test isn’t how it looks written down — it’s whether you can say it over the phone and have someone type it correctly on the first try. “It’s Nelson dash coastal dash builders dot co dot nz” is a domain that’s going to get mistyped constantly. If your business name is long, a shortened but still recognisable version usually beats the full thing crammed in.
Don’t build your domain around today’s product line
A domain locked to one specific service — nelsondeckbuilders.co.nz for a business that also does renovations and new builds — quietly boxes you in later. Either it undersells what you actually do now, or it needs replacing entirely if the business grows past what the name implies. A domain based on your actual business name usually ages better than one based on a single service.
Buy it in your own name, from your own account
This is the part people skip and regret. Whoever registers the domain controls it — register it yourself, under your own account and your own contact details, even if a developer is doing the actual setup for you. We’ve written more about why this specific detail matters in do you own your website? — the short version is that a domain registered under someone else’s account is the single most common way small businesses accidentally lose control of their own web presence.
The honest answer
Most of the decision is genuinely simple: .co.nz for a local NZ business, something short enough to say over the phone, based on your business name rather than one specific service, registered under your own account. Get those four things right and you’re very unlikely to be back here in two years wishing you’d chosen differently.