Stock, semi-custom or custom cabinets: where kitchen budgets go
Stock cabinets keep a kitchen remodel affordable; custom cabinetry can roughly double it. Here's what the jump in price actually buys.
Stock cabinets typically bring a UK kitchen remodel in around £7,650. Move up to semi-custom and the same kitchen costs about £7,800, and full custom cabinetry pushes it to around £9,400. The room size and layout haven't changed in any of those figures — only how the cabinets are made.
What "stock", "semi-custom" and "custom" actually mean
These aren't marketing labels, they're manufacturing categories, and each one carries a real cost driver:
- Stock (flat-pack) cabinets are built in fixed, factory-set sizes and shipped flat for assembly on site. Fillers and end panels paper over any gaps between the cabinet run and your walls. Because they're mass-produced in bulk, the unit cost is low.
- Semi-custom cabinets are built to order from a manufacturer's range, but with more size increments, door styles, finishes and internal fittings to choose from. You're still working from a catalogue, just a deeper one, and a joiner usually scribes the end panels to fit your walls exactly.
- Custom cabinetry is built to your kitchen's exact dimensions by a joiner or bespoke cabinet maker, with no filler panels, no size compromises, and construction methods (solid wood frames, dovetailed drawers) that stock ranges don't offer.
The price gap isn't really about the materials in the box — a mid-range painted door can appear in all three tiers. It's about labour: custom runs need a joiner to template, build and fit a one-off product, where stock cabinets are largely bolted together from pre-cut panels.
Where the money actually goes
We calculate these figures from installer labour hours at local rates, plus materials, checked against market prices and real quotes. In a stock-cabinet kitchen, labour is mostly assembly and fixing — fast, predictable work. In a custom kitchen, a much larger share of the bill is skilled joinery time: measuring the room precisely, building drawer boxes and carcasses to match, and fitting doors with the kind of tolerances a flat-pack range never needs. That's the main reason the jump from stock to custom isn't 10–20% — it's closer to doubling.
When the upgrade is worth it
Semi-custom earns its premium in kitchens that aren't a neat rectangle: an awkward alcove, a run that has to work around a boiler cupboard, or a wall that's slightly out of true. The extra size options and scribed end panels mean you don't end up with a wide gap filler at the end of a run, which on a stock kitchen can look like an afterthought.
Full custom cabinetry mostly earns its price in two situations: genuinely unusual layouts (galley kitchens, sloped ceilings, listed or period houses where nothing is a standard size), and households that want a specific internal fit-out — larder units, integrated appliance housings, bespoke drawer dividers — that off-the-shelf ranges simply don't offer at any price. If your kitchen is a standard rectangular room, stock or semi-custom cabinets will fit it just as well as custom ones, for a lot less.
Don't forget the worktop
Cabinet grade is one lever; worktop material is another, and it's worth comparing on its own terms rather than assuming "custom cabinets" automatically means "quartz worktop." The two choices are independent — you can pair stock cabinets with a quartz worktop, or custom cabinets with laminate, and the overall kitchen cost moves accordingly:
| Material | Typical | Usual range | Lifespan |
|---|---|---|---|
| Laminate worktop | £5,350 | £4,200 – £6,950 | – |
| Solid wood / butcher block | £5,950 | £4,650 – £7,750 | – |
| Solid surface (acrylic) | £6,900 | £5,350 – £8,950 | – |
| Granite | £7,100 | £5,550 – £9,250 | – |
| Quartz / engineered stone | £7,800 | £6,100 – £10,200 | – |
| Sintered stone / porcelain slab | £7,800 | £6,100 – £10,200 | – |
| Marble | £8,050 | £6,300 – £10,500 | – |
A laminate worktop on custom cabinets, for instance, can land close to a solid-surface or quartz worktop on stock cabinets — so if your priority is the cabinet carcass quality rather than the worktop finish, it's worth pricing both combinations before you decide where the budget goes.
The hidden cost: lead time
Price isn't the only difference between the tiers. Stock cabinets can often be on site within days of ordering. Semi-custom typically needs several weeks for the manufacturer to build to the chosen sizes. Custom cabinetry is measured in months in many cases, since a joiner is building and finishing a one-off product, often after templating the room once first fix work is complete. If your timeline is tight — a single bathroom-out-of-action window, or a fixed moving-in date — that lead time can matter as much as the price difference.
Getting a fair quote
Because labour is such a large share of the cost difference between tiers, quotes for the same cabinet grade can still vary a lot between installers depending on how they price joinery time. It's worth asking exactly which tier a quote assumes — "custom" is sometimes used loosely to describe scribed semi-custom work — and running the number through our "is my quote fair" tool before you sign off.
For the full breakdown of a kitchen remodel budget, including worktops, appliances and layout changes, see our New kitchen cost guide. If new flooring is part of the same project, our New flooring guide covers material costs separately, since kitchen and flooring budgets are usually quoted and paid for independently even when the work happens at the same time.