The question every Australian renovator asks at some point is not "flat pack or custom?" — it is "am I paying double for something that looks the same after six months?" That is a fair question, and it deserves an honest answer from someone who actually builds kitchens rather than aggregates quotes for a comparison website. This guide works through the real cost gap, what it buys you in material and craft terms, and — crucially — when flat-pack is genuinely the smarter choice. Because sometimes it is.
What You Actually Pay: The Real Cost Comparison
The table below uses 2026 market rates for a medium-sized kitchen (roughly 3–4 linear metres of cabinetry, standard layout, no structural changes). Figures are drawn from KitchenQuote's flat-pack versus custom comparison and Whatsthedamage's NSW kitchen renovation cost guide, cross-referenced against what we see in our Newcastle workshop.
| Cost factor | Flat-pack | Custom cabinetmaker |
|---|---|---|
| Cabinet supply (medium kitchen) | $3,500–$8,000 | $10,000–$22,000 |
| Installation labour | $2,500–$5,500 (nearly always extra) | Usually included in quote |
| Hardware upgrade to Blum | $500–$2,000 extra | Blum Legrabox/undermount included |
| Benchtop (supply only, sintered stone) | $3,500–$7,000 extra | Usually quoted separately |
| Design service | $0–$600 (basic online planner) | Included; dedicated measure + design |
| Total realistic cost | $8,000–$15,000 | $18,000–$45,000 |
A few notes on that table. The flat-pack installation figure assumes a competent tradie or skilled DIYer — if you hire a carpenter to handle assembly, delivery, levelling, and scribing, that $2,500–$5,500 is real money and most flat-pack buyers do not budget for it upfront. The custom figure includes installation but typically excludes appliances, electrical, plumbing, tiling, and painting — the same exclusions apply at both ends of the market.
The gap in dollar terms is significant: roughly $10,000–$30,000 for a medium kitchen. The question is what that gap represents.
What You Actually Get for the Difference
Board quality and construction
Flat-pack carcasses — whether IKEA SEKTION, Kaboodle, or most Freedom Kitchen ranges — are built from 15–16mm particleboard. Some use melamine-faced particleboard, which is adequate in dry conditions. Most are not moisture-resistant (MR-rated).
Custom joinery from a reputable cabinetmaker uses 18mm MR-rated board throughout — carcasses, shelves, and drawer bases. MR board is manufactured with a resin binder that resists moisture ingress. In a kitchen environment where steam, condensation, and the occasional splash are inevitable, this matters. The difference is most visible around dishwashers, under sinks, and in any kitchen within a few kilometres of the coast (see the section on coastal NSW below).
Joinery constructed to AS 4386:2018 — the Australian Standard for cabinetry in the built environment — specifies minimum carcass thickness, hinge cycle ratings, and drawer load tolerances. Flat-pack systems are not built to this standard.
Hardware
The single biggest functional difference between flat-pack and custom joinery is the drawer hardware. Flat-pack systems at the budget end use plastic-bodied runners with soft-close mechanisms that fail within a few years of daily use. Even Kaboodle's better hardware is a generic undermount runner that bears no comparison to Blum's Legrabox system.
Custom joinery from SteepWood is built with Blum Legrabox in Carbon or Stainless as standard for drawers, Blum Clip Top Blumotion hinges for doors, and Blum Aventos lift systems for overhead cabinets. These components are rated to 500,000 opening cycles and come with Blum's warranty. In practical terms, you will never replace a drawer runner in a properly built custom kitchen.
Scribe fit and design service
A flat-pack kitchen is built around what the manufacturer makes. Your wall is 2,345mm wide — the closest flat-pack configuration gets you to 2,280mm or 2,400mm. You fill the gap with a filler panel, a decorative end, or by accepting a slightly awkward visual join.
Custom joinery is built to your exact dimensions. Scribes are cut to the wall profile. Overhead cabinets meet the ceiling. Corner solutions are designed for your specific corner, not adapted from a range of standard corner units. The design service — which at SteepWood includes an in-home measure and full drawn design — is the value that rarely shows up in a cost comparison table.
The Hidden Costs of Flat-Pack
The $8,000–$15,000 total cost figure for flat-pack looks compelling until you itemise what is not in the box.
Delivery and assembly. Flat-pack is flat-packed. IKEA's delivery cost to Newcastle or Sydney is $99–$299 depending on order size and location. The cartons need to be assembled before installation — this takes time, and if you are hiring a carpenter rather than doing it yourself, that assembly time is billed at trade rates.
Filler panels and non-standard sizes. Every flat-pack kitchen generates offcuts, filler strips, and workarounds. These are not cosmetic concerns — they add $200–$1,500 to the job depending on how complex the layout is.
Trade coordination. Flat-pack manufacturers do not coordinate your plumber, electrician, or tiler. A custom joinery studio like SteepWood manages the sequencing — cabinetry arrives when the trades are ready, and the install is coordinated around the build programme. With flat-pack, that coordination falls to you or your builder.
Benchtop templating and cut-outs. Custom carcasses are built to the benchtop specification. Flat-pack carcasses need to be accurately measured and levelled before the stonemason or benchtop supplier can template — any movement between assembly and templating creates problems.
The handle problem. Most flat-pack ranges use proprietary door profiles or drilling patterns that limit your handle options. Custom doors are drilled to your handle specification.
The 10-Year Test: Repairability, Resale, and Lifecycle Cost
This is the comparison nobody else is running. The 10-year framing changes the economics significantly.
Repairability
A custom kitchen from a local cabinetmaker can be repaired. A door gets damaged — we make a new one. A drawer box cracks — we replace the box. The carcasses are accessible and built to standard dimensions, so any competent joiner can work on them.
Flat-pack kitchens are largely irreparable in the traditional sense. Particleboard carcasses that swell or delaminate cannot be meaningfully repaired — they need to be replaced. IKEA's modular system does allow individual unit replacement, which is a genuine advantage, but if the range has been discontinued (IKEA redesigns its kitchen systems roughly every 8–12 years), matching replacements become unavailable. Kaboodle at Bunnings is subject to the same shelf-life risk.
In a coastal NSW environment, the average flat-pack kitchen lifespan is 8–12 years before meaningful deterioration. Custom joinery using MR board and quality hardware routinely lasts 20–25 years, which is consistent with the 10-year structural warranty SteepWood provides on all joinery. That changes the lifecycle cost calculation considerably.
The simple lifecycle maths
Assume a flat-pack kitchen at $12,000 all-in, replaced once over 20 years (conservative in a coastal environment): $24,000 total outlay, plus a second disruption to your home.
A custom kitchen at $28,000, lasting the full 20 years with no replacement: $28,000 total outlay, no second disruption.
The premium for custom joinery in a medium kitchen is often less than the cost of one replacement cycle of flat-pack. That is before considering the resale difference.
Resale uplift
NSW real estate agents consistently note that kitchen quality is one of the top three buyer considerations in the $700k–$1.5m market. A custom kitchen — visible through quality cabinetry, integrated hardware, and a fitted-to-the-room finish — is expected at this price point. A flat-pack kitchen in the same home is a negotiating point. The premium spent on custom joinery returns, in part, at resale. The numbers vary by suburb and property type, but the principle is consistent.
For investment properties or homes at lower price points, the maths is different — which is why flat-pack has a genuine role to play (see below).
The Full AU Flat-Pack Landscape: An Honest Assessment
Not all flat-pack is equal. Here is how the main options stack up in 2026.
IKEA SEKTION
Strengths: Widest range, most design flexibility within the system, well-documented installation, strong community of independent fitters familiar with the product, replacement parts often available. The SEKTION carcasses are 18mm particleboard — better than some competitors.
Weaknesses: Not MR-rated. Doors are limited to IKEA's own range (Bodbyn, Axstad, Kungsbacka etc.) unless you use a third-party door supplier. Hardware is adequate but not Blum. In Australian conditions, the particleboard performs poorly in wet areas. For coastal NSW, it is a risk.
Best for: Apartments, rental properties, confident DIYers who will not sell within 5–7 years, buyers who want a large kitchen on a tight budget.
Kaboodle (Bunnings)
Strengths: Available nationwide, no delivery wait, competitive pricing, reasonable colour range, good DIY support. Bunnings' trade-in pricing means you can buy individual units or build out a full kitchen incrementally.
Weaknesses: 16mm carcasses, limited door and handle options, hardware is generic. Not a product that custom joiners will naturally specify or recommend. Some Kaboodle ranges use Polytec laminate sheet on doors — the same brand used by custom cabinetmakers — but the substrate and construction are categorically different.
Best for: Granny flats, holiday lets, laundries (though the same flat-pack-versus-custom logic applies to laundry cabinets — particularly in coastal areas).
Freedom Kitchens
Strengths: Semi-custom offer — Freedom will design to your space and handle installation. Better finish options than DIY flat-pack. More cohesive design service than IKEA or Kaboodle.
Weaknesses: Freedom is a retailer, not a workshop. Cabinetry is manufactured offshore or interstate and shipped to site. Hardware is generally Hettich rather than Blum at the mid-range. The design service is more limited than a dedicated custom cabinetmaker — Freedom uses a fixed module system with limited ability to handle complex layouts, non-standard ceiling heights, or heritage home proportions.
Best for: Mid-market renovations where a full-custom budget is not available but a more managed process than DIY flat-pack is preferred. Freedom is a legitimate middle ground — just understand what you are buying.
A note on materials: some Freedom and premium Kaboodle doors do use Polytec laminate sheet — specifically from the DecorFusion and Standard Colour ranges. The Polytec board is a quality product. The difference at the custom end is how that board is used: 18mm MR-rated carcass, proper edgebanding with 2mm ABS edge, and Blum hardware throughout.
When Flat-Pack Genuinely Makes Sense
I build custom kitchens for a living, but I will tell you honestly when flat-pack is the right call.
Rental properties. If you are renovating a kitchen in a property you rent to tenants and you are not planning to sell within three years, a well-executed flat-pack kitchen is a rational investment. Tenants use kitchens hard, and the economics of a $12,000 flat-pack versus a $30,000 custom kitchen in a rental context are difficult to justify.
Short-stay properties and Airbnb. Similar logic applies. A holiday let kitchen needs to look good in photos and withstand heavy use. At a price point that makes sense for the rental yield.
Very tight budgets. If your total kitchen renovation budget is $15,000 or less, flat-pack is your kitchen option. Custom joinery starting at $18,000–$22,000 for supply only is simply not accessible at this budget level, and flat-pack done well is a better outcome than custom joinery done poorly. Spend within your means.
Confident DIY renovators. IKEA SEKTION in particular has a strong ecosystem of third-party doors, hardware, and custom face frames that sophisticated DIYers use to build impressive kitchens at cost. If you have the skills and the time, it is a legitimate path.
Granny flats and secondary dwellings. A secondary dwelling kitchen typically doesn't need the longevity or the finish quality of the main home. Flat-pack at this scale makes economic sense.
STEEPWOOD SERVICE — Not sure where you land on this? We offer a free in-home measure and quote across NSW and ACT. We will give you an honest scope and a real number — and if flat-pack is genuinely the right choice for your project, we will tell you that too. Call us on 0468 387 676 or email hello@steepwood.com.au.
When Custom Is the Clear Choice
The forever home. If you are planning to live in this property for 10-plus years, custom joinery is almost always the better financial decision once you run the lifecycle numbers. It is built once, repaired not replaced, and performs better in every category over time.
Complex or non-standard layouts. Peninsula configurations, L-shaped kitchens with two windows, kitchens with a structural post mid-run, or rooms where the floor is not level — these are layouts where flat-pack systems generate compromises at every turn. Custom joinery absorbs the complexity.
Premium finishes. 2pac polyurethane, solid timber veneer in Tasmanian Oak or Blackbutt, fluted profile doors, integrated handle channels — none of these are available in flat-pack systems. If the aesthetic of your kitchen is important to the overall feel of the home, you need a cabinetmaker.
Coastal and coastal-adjacent homes. Newcastle, Lake Macquarie, the Central Coast, and Hunter Valley homes near water are environments where particleboard flat-pack shortens its own life. Custom joinery built with MR board, proper edgebanding, and Blum's corrosion-resistant hardware is the correct specification. See our Hamptons kitchen project for an example of how we approach coastal-home joinery — MR board throughout, Blum Legrabox in Carbon Black, Polytec SYNC Brushed Natural Oak doors.
Heritage homes. Federation-era and inter-war homes in Newcastle and the inner Hunter have non-standard ceiling heights, irregular wall planes, and period proportions that no modular flat-pack system can address. Custom joinery is the only option for a kitchen that reads as part of the original home rather than an obvious addition.
The $800k-plus property market. At this price point, buyers expect a custom kitchen. A flat-pack kitchen in a premium home is not a neutral outcome — it is a negotiating point at sale.
How to Evaluate Quotes Side-by-Side
If you are comparing a flat-pack quote against a custom joinery quote, compare on the following line items:
| Item | What to check |
|---|---|
| Carcass material | MR-rated 18mm board vs standard particleboard |
| Door material and finish | Polytec/Laminex laminate vs MDF vs painted MDF |
| Edgebanding | 2mm ABS edge (custom) vs 0.4mm melamine edge (flat-pack) |
| Drawer hardware | Blum Legrabox/undermount vs generic runner |
| Hinge type | Blum Clip Top Blumotion vs standard concealed hinge |
| Installation included? | Yes/no and what it covers |
| Design service | Drawn-to-scale plans vs online planner |
| Warranty | 10-year structural (custom) vs 1–2 year manufacturer (flat-pack) |
| Who coordinates trades? | Cabinetmaker or you |
| Benchtop template fee | Included or extra |
A custom quote that looks $15,000 more expensive than a flat-pack quote often includes $4,000–$6,000 of installation, hardware, and design that the flat-pack quote itemises separately (if at all). Get both quotes to the same scope before comparing.
For more guidance on reading a joinery quote, see our post on 10 Questions to Ask Before Hiring a Custom Joiner.
Frequently Asked Questions
Is IKEA worth it for a forever home?
For a forever home, IKEA is rarely the right call. SEKTION cabinets use 15–16mm particleboard carcasses that are not moisture-resistant, and the system relies on fillers and standard modules that rarely align with your actual wall dimensions. The result is a kitchen that looks right at first but shows its limits within a few years — swelling around the dishwasher, carcasses that cannot be repaired, and a finish that dates quickly. If you plan to live in the home for 10-plus years, the total-cost gap between IKEA and a custom kitchen narrows considerably once you account for replacement and resale. Spend the money once.
Can a cabinetmaker install flat-pack cabinets?
Yes, most cabinetmakers will install flat-pack carcasses if asked, though many prefer not to because the work is fiddly and the responsibility for any panel faults shifts awkwardly between manufacturer and installer. If you go this route, agree in writing on who is responsible for defects in the flat-pack components. Labour rates are the same whether the carpenter is installing flat-pack or custom — typically $80–$130 per hour in NSW. You save on the cabinet supply cost but pay the same hands-on time.
Is Kaboodle the same as custom?
No. Kaboodle (Bunnings) is a modular flat-pack system manufactured to fixed dimensions. Carcasses are 16mm particleboard, doors are available in a limited colour and profile range, and the system uses standard runners rather than Blum undermount hardware. It is a well-made, honest product at its price point — but it is categorically different from custom joinery, which is built to your exact dimensions, uses MR-rated (moisture-resistant) 18mm board, and comes with Blum hardware and a structural warranty. Use Kaboodle for a rental or a holiday let. Use a cabinetmaker for your home.
Do flat-pack kitchens add resale value in Australia?
Flat-pack kitchens add some resale value over no kitchen renovation at all, but real estate agents and valuers in NSW consistently report that buyers can tell the difference. A custom kitchen in a property priced at $900,000-plus is expected — a flat-pack kitchen in the same home is a negotiating point for buyers. Domain and CoreLogic data suggest kitchen quality is one of the top three factors cited by buyers in the $700k–$1.5m market. For investment properties and entry-level homes, flat-pack is fine. For the forever home, the resale uplift from custom joinery typically offsets 30–50% of the premium over flat-pack.
How long does flat-pack last in coastal NSW?
Standard flat-pack cabinets using 16mm particleboard will typically last 8–12 years in inland NSW conditions with normal use. In coastal NSW — Newcastle, Lake Macquarie, the Central Coast, the Hunter Valley near water — the timeline shortens. Particleboard is not moisture-resistant: it swells, delaminates, and loses structural integrity when exposed to humidity, condensation, or any water ingress near a dishwasher or sink. Custom joinery using MR-rated 18mm board, quality edgebanding, and Blum corrosion-resistant hardware performs significantly better in coastal conditions. If you are building or renovating within a few kilometres of the coast, the material difference matters more than the price difference.
Ready to Compare Properly?
If you have a kitchen project in NSW or the ACT and you want a quote you can actually compare against a flat-pack estimate — line by line, with clear scope — we will give you one at no cost. SteepWood holds NSW Carpentry Contractor Licence 489553C, builds in our Newcastle workshop, and backs every kitchen with a 10-year structural warranty. We do not take a deposit until you have approved drawings.
Get a free measure and quote — or read our Custom Kitchen Cost Guide for NSW to understand what drives the numbers before you call.
You can also explore the custom kitchen joinery and built-in wardrobes service pages for more on what we build and how we work.
SteepWood Joinery · Newcastle NSW · hello@steepwood.com.au · 0468 387 676 · Mon–Fri 7am–5pm, Sat by appointment
