If you’ve gathered more than one quote for custom cabinetry, you’ve almost certainly noticed a puzzling spread in the numbers. The same layout, the same number of doors and drawers, yet the prices can differ substantially. This isn’t usually a case of one contractor being dishonest — it’s a case of genuinely different products being offered under the same description. To understand the price difference, you need to understand what goes into the cabinet. I sat down with my dad — 40 years in the joinery trade — to break it down.

Panel Materials: The Foundation of Every Cabinet

The most consequential decision in any cabinet build is the choice of panel material. Two options dominate the market: chipboard and plywood.

Chipboard (particle board):

Made from compressed wood particles and adhesive — structurally similar to a dense board of wood pulp
Brittle under impact; edges chip easily if knocked or dropped
Swells significantly when exposed to moisture, compromising the structural integrity of the whole cabinet
Lower cost — this is the primary reason it appears in budget quotes

Plywood (cross-laminated timber board):

Constructed from alternating layers of timber veneer, each layer running perpendicular to the one below, creating a structurally stable composite
Holds screws and fasteners firmly — important for cabinets that are disassembled and reinstalled during renovation or relocation
More resistant to moisture damage; if it gets wet, structural failure is slower and recovery is more likely after drying
Higher cost, but meaningfully better performance over a decade or more of daily use

My dad’s view, formed over four decades of building and repairing cabinets: chipboard is a short-term material. For homeowners who plan to live in a home for five years or more, the cost of replacing chipboard cabinets prematurely eliminates any initial savings. Plywood is a long-term investment.

Door Panel Construction: Why Doors Use Thicker Material Than the Carcass

Many homeowners assume the doors and the cabinet body are made from the same material and thickness. In quality construction, they are not — and the reasons are sound.

Cabinet carcass (the box):

Typically uses thinner panels (for plywood, commonly 9–12 mm)
Once assembled with its structural frame, the carcass achieves sufficient rigidity without requiring thick panels
Using thinner material here reduces weight and cost without compromising function

Door panels:

Require thicker material — typically 18 mm or more
Door panels are suspended by hinges, unsupported at their edges and centre; they must be stiff enough to remain flat over years of use
Chipboard doors, being less structurally rigid, are more prone to bowing — particularly in humid environments
Plywood door panels, with their cross-grain laminate structure, remain significantly flatter over time; they resist the warping tendency that affects less stable materials

This is why you’ll sometimes hear a joinery contractor refer to using different board specifications for the door and the body — it’s not inconsistency, it’s appropriate engineering for each component’s function.

Internal Frame Structure: The Hidden Factor in Cabinet Longevity

Beyond material choice, the internal construction of the cabinet carcass significantly affects both structural performance and long-term value.

A simpler (and cheaper) approach joins the side panels, top, and bottom with fasteners alone — no additional structural reinforcement. This can look fine initially, but the cabinet’s load-bearing capacity and its ability to hold its shape over time are limited.

A more robust approach incorporates lateral frame members within the carcass, creating an internal skeleton that distributes load more effectively and prevents the sides from bowing outward under weight. Cabinets built this way hold their shape better with heavy contents, and hinges and drawer runners stay aligned for longer.

When a quote is noticeably below market average, the internal frame structure is often where the savings have been made. It’s invisible at the point of sale and only becomes apparent over years of use.

Small Bedroom Wardrobes: Getting the Dimensions and Door Type Right

My dad’s consistent advice for small bedrooms: the wardrobe design is critical, because a poorly sized wardrobe can consume so much floor space that moving around the room becomes uncomfortable.

Custom wardrobes offer a specific advantage over ready-made furniture in confined spaces: they can be built precisely to the wall dimensions, eliminating the awkward gaps and corners that ready-made pieces leave behind. The interior layout can also be configured around actual usage:

For people who prefer folded storage: maximise fixed and adjustable shelving
For people who avoid folding: prioritise hanging rods — short garments above, longer items below
For accessories (bags, jewellery, belts): include dedicated small compartments or pull-out drawers

For door type, the general rule is practical: if the bedroom has at least 6 feet (approximately 1.8 metres) of clear floor space in front of the wardrobe, hinged doors are preferable — better dust sealing, more durable, easier to maintain. If the space is tight, sliding doors avoid the clearance requirement, though they require more ongoing attention to keep the track clean.

Home Extensions: Start the Approval Process Early

If your new property includes planned extensions — additional structures, enlarged balconies, or external alterations — it’s important to understand that planning approval through the relevant local authority takes time, often more than homeowners expect.

The practical recommendation: if you have a target move-in date, begin any government approval applications at least three months before that date. Construction that proceeds without approval creates complications that can delay occupation or require costly modifications. Planning early is always less expensive than managing the consequences of planning late.

Conclusion: Understand the Specification, Not Just the Price

The price gap between two cabinet quotes rarely reflects one contractor’s greed and another’s generosity — it almost always reflects material and construction differences that are invisible until the cabinet is built and has been in use for a few years. Chipboard versus plywood. Door thickness. Internal frame construction. These are the factors that separate cabinets that hold up and cabinets that don’t.

Before accepting any quote, ask three direct questions: what panel material is used for the carcass? What is the door panel thickness and material? Is there internal frame reinforcement? The answers will tell you more about the real value of the quote than the total figure on the bottom line.