If you've started pricing up a new kitchen, you've probably noticed the quotes can vary by tens of thousands of dollars for what looks like a similar-sized job. A big part of that gap comes down to one decision: custom-built cabinetry versus a flat-pack (also called kitset, or "ready-to-assemble") kitchen. Both are legitimate ways to get a new kitchen — they're just built for different situations, and the right one for you depends on your budget, your timeline, your DIY appetite, skills and tools, and how long you're planning to stay in the house.
The quick answer
Flat-pack kitchens are cheaper upfront and can work well for rentals, very tight budgets, or a straightforward, standard-shaped kitchen that you — or a handy friend with the right tools and skills — can assemble. Custom kitchens cost more upfront but are built to your exact space, use higher-grade hardware, and typically go a lot longer before hinges, runners or panels start to fail. For most Auckland homeowners renovating a forever home, that's why our Mid-Range tier — $20,000–$50,000 in our full cost guide — is where most people land.
What's actually different?
Custom cabinetry is hand-built cabinet-by-cabinet to your exact wall dimensions, ceiling height, appliance gaps and benchtop cut-outs. A local manufacturer — in our case, our own factory in Papakura — makes every panel to measure, so there are no gaps, no filler strips, and no compromises for an awkward corner or a sloped ceiling.
Flat-pack (kitset) cabinetry comes in standard module sizes — typically 300mm increments — pre-cut and shipped flat in boxes for you or an installer to assemble on site. It's the same basic idea as flat-pack furniture, scaled up to a full kitchen. Where your walls, alcoves or ceiling don't match the standard sizes, the gap is covered with a blank filler panel rather than built to fit exactly.
A flat-pack kitchen typically arrives as a stack of pre-cut, boxed panels ready for on-site assembly.
The cost difference, in real numbers
Using the same tiers as our Auckland kitchen cost guide, here's roughly where each option sits:
| Tier | Typical cost (incl. GST) | What's typically included |
|---|---|---|
| Flat-pack / kitset | $10,000 – $20,000 | Standard-size flat-pack or semi-custom cabinets, laminate benchtop, basic appliances, same layout. Can trend toward the lower end if you supply your own labour for assembly and install. |
| Custom (mid-range) | $20,000 – $50,000 | Custom NZ-made cabinetry built for your space, engineered stone benchtop, quality hardware, designer splashback, minor layout adjustments possible. |
| Custom (premium) | $50,000 – $100,000+ | Custom cabinetry for kitchen and butler's pantry, natural stone, layout changes, premium integrated appliances. |
See the full breakdown, including per-square-metre benchmarks and what drives the cost, in our Auckland kitchen cost guide.
What you gain by going custom
- Built to your exact walls, not the other way around — no filler panels, no wasted corners, no compromise on an odd-shaped room.
- Any layout is possible: islands, angled walls, sloped ceilings, a butler's pantry — a custom design isn't limited to standard module widths.
- Premium hardware as standard: brands like Blum, Hafele and Hettich carry lifetime warranties on hinges and runners, versus the standard-grade hardware typically fitted to flat-pack ranges.
- NZ-made board, certified to E0 or E1 formaldehyde emission standards — the internationally recognised benchmark for low-emission cabinetry.
- A design service, not just a product: someone who's designed hundreds of kitchens helps you avoid layout mistakes that are expensive to undo once cabinets are installed.
- A longer working life before doors, hinges or benchtops need attention — often 15–20+ years versus a shorter lifespan for entry-level flat-pack hardware.
A custom-built kitchen finished to the client's exact specifications.
When flat-pack genuinely makes sense
- A rental or investment property, where the return on a higher spec is limited.
- A short-term hold before you plan to renovate again or sell.
- A simple, standard-shaped kitchen with no awkward angles, alcoves or sloped ceilings.
- You (or someone you know) has the skill, tools and weekends to assemble and install it properly.
- A patient partner who is willing to put up with a half-built kitchen while you find the time to complete it.
- Budget is the overriding factor, and you're comfortable trading some longevity for a lower price today.
The hidden costs worth knowing about
- Assembly time and skill: a full flat-pack kitchen typically takes a competent DIYer several full weekends. Get it wrong and cabinets can end up out of square or with misaligned doors. There's a reason a cabinetmaking apprenticeship takes three to four years to complete.
- Standard sizing means fillers and gaps: New Zealand villas and older homes rarely have perfectly square walls or standard-width nooks. Flat-pack modules come in fixed sizes, so odd gaps get covered with a blank panel rather than built to fit.
- Hardware wear: cheaper hinges and drawer runners are the single biggest false economy in a budget kitchen. As we cover in our cost guide, this is often the difference between a kitchen that's still tight and quiet in ten years and one that's rattling within two.
- Who do you call? With a custom kitchen from one local manufacturer, one company designed it, built it, and stands behind it. With flat-pack, responsibility for design, assembly and any fit issues is often split between you, the retailer, and whoever installed it. Lots of finger-pointing!
A quick way to decide
Ask yourself:
- Is your kitchen a simple rectangle, or does it have angles, an island, or a sloped ceiling?
- Are you renovating a forever home, or a short-term rental?
- Do you have the DIY skill, tools and spare weekends, or do you want it designed and installed for you?
- Is your budget under $20,000, or is there room to move into the $20,000–$50,000 range?
If most of your answers are "custom shape, forever home, no time to DIY, $20k+," a custom kitchen is very likely the better long-term value. If most are "simple shape, rental, happy to DIY, tight budget," flat-pack is a legitimate, sensible choice — just budget for hardware wear sooner rather than later.
Where Elite fits in
At Elite Kitchens & Cabinets by Mastercraft, we've been designing and building custom kitchens in our own Papakura factory since 1958, using European-designed hardware. Whether you're after a Contemporary, Traditional or Hampton kitchen, or you're working with a small footprint, our Auckland design team can walk you through exactly where your project sits between flat-pack and full custom — no pressure, no obligation.
And if flat-pack turns out to be the right fit for you, Elite can price and supply a flat-pack kitchen too — provided you have the skills, tools and time to install it yourself.
Not sure which option fits your budget and your home? Book a free design consultation and we'll give you a straight answer.
Compiled by Hamish Ross, Director, Elite Kitchens by Mastercraft. Hamish has been involved in the kitchen industry for 13 years and is currently a member of the Executive Board of the National Kitchen and Bathroom Association (NKBA).
