Published kitchen renovation figures are close to useless on their own, because they average together three very different projects: a door-and-worktop refresh, a like-for-like replacement, and a full strip-out with a new layout. Those differ by a factor of four for the same room.
What is stable across all of them is the shape of the budget, and that is what makes planning possible.

Cabinetry is a third of it
Before appliances, worktops or labour are priced, cabinetry has usually taken around a third of the budget. That is why it is also the largest available saving.
The distinction that matters is carcasses versus doors. The carcass is the box; the door is what you see. If the carcasses are sound — no water damage, no sagging shelves, no broken hinge plates — replacing only the doors, handles and worktop transforms a kitchen visually for a fraction of a full replacement.

The three decisions that move the total

Moving plumbing and electrics is the biggest multiplier available. Relocating a sink means new supply and waste runs, often floor work, and in most jurisdictions notifiable electrical work with sign-off. A layout that keeps the sink, hob and drainage where they are can save a very large fraction of the total.
Worktop material is the second. The same run of counter spans an enormous range depending only on what it is cut from.

Doors versus carcasses is the third, and the one most people never consider before getting quotes.
Where to save, and where not to

The rule that holds up: save on what is visible and replaceable, not on what is buried and permanent.
Doors can be changed again in five years. Electrics behind a plastered wall cannot. Cheap drawer runners fail within two years and replacing them means taking the drawer front off; good ones outlast the kitchen. Extraction is worth doing properly because a bad extractor is the difference between a kitchen that smells of last night and one that does not.
The costs that are not on the quote
- Waste disposal. A kitchen strip-out fills a skip, and skip hire is rarely in a fitter's quote.
- A temporary kitchen. A microwave, a kettle and a table somewhere else, for six to twelve weeks.
- Eating out. Weeks without a kitchen costs real money, and it is the line people forget entirely.
- Contingency of 10 to 20 percent. Something is always found behind the old units — usually damp, old wiring, or a floor that is not level.
The cheapest changes that make the most difference
If the budget is small, three things move the needle disproportionately: handles, which take an afternoon and change the whole character of a run of doors; lighting, particularly under-cabinet strips, which change how the room feels at night more than any surface does; and decluttering the worktop, which is free.
That last point is worth taking seriously. A great many kitchens that feel too small are not short of space; they are short of *reachable* space. How to organise kitchen cabinets and small kitchen storage ideas both cover changes that cost under fifty pounds and occasionally remove the reason for renovating at all.
The short version
- Cabinetry is about a third of the budget; labour is 20-35%.
- Moving plumbing and electrics is the single biggest multiplier.
- If the carcasses are dry and square, replace doors instead.
- Save on doors, worktop material and appliances. Not on electrics, extraction or runners.
- Add 10-20% contingency and budget for eating out.
- Handles, lighting and better storage access transform a kitchen for very little.


