Minor vs. Major Kitchen Renovation Cost in Great Britain

A minor job — the calculator's refresh scope — keeps the carcasses where they stand and changes what you see and touch: new doors and drawer fronts or a professional reface, new worktops, new handles, a new tap, perhaps a new splashback and a coat of paint. The plumbing stays put, the gas stays put, no new circuits are added, so there is nothing to notify under Part P and no building control involvement. Disruption is measured in days rather than weeks, and because flooring and services are untouched, the labour bill stays in proportion. The honest precondition is sound carcasses: refacing units with swollen chipboard or failed hinges is decorating a problem.

The reason a refresh stays cheap is that it is priced by the piece rather than by the project. Checkatrade breaks a replacement door down to its parts — door, hinges, handles and a joiner charged at £37.50 an hour — reaching £131.10 for a standard cupboard door, £161.55 for a tall one and £258.90 for a drawer set, each figure including VAT at 20%. Worktops are the other half of the job: a five-metre laminate run is £200 to £800 with £500 the average, and fitting worktops as a standalone visit is £300 to £1,000, averaging £500. Count your doors and drawers, add a worktop, and you have a refresh estimate without a single trade visiting the house.

Homebuilding & Renovating prices the same job from the opposite direction — by the kitchen rather than by the door — and puts new doors for a medium-sized kitchen at £800 to £1,000, rising to £3,000 to £4,000 for higher-quality versions. The two views reconcile neatly: at Checkatrade's £131.10 a door, £800 to £1,000 buys roughly six to eight of them, which is about what a medium kitchen carries. That agreement is worth having, because it means the cheap end of a refresh is a genuinely known quantity rather than one publisher's estimate — and it also marks where a refresh stops being cheap, since doors at the higher-quality end can reach two-thirds of the £6,200 entry point for gutting the room entirely.

A major job replaces everything, and in its fullest form changes the layout too. The moment the sink crosses the room or the hob moves to an island, first-fix trades enter: new pipe runs and waste routes, new circuits notifiable under Part P, gas alterations through a Gas Safe registered engineer, and extraction ducting found a compliant route to an outside wall. Knock through to the dining room — the classic move in interwar semis and Victorian terraces — and a structural engineer, a steel, and building control sign-off join the programme. In Scotland the same alterations route through a building warrant instead. Each of these is sensible money for the right project; the point is that none of it exists in the minor scope, which is why the gap between the two quotes is structural rather than negotiable.

Checkatrade's headline for a full kitchen renovation spans £6,200 to £50,000, and the split inside that span is instructive: a full renovation to a budget specification is £6,200 to £16,800 with £11,500 the average, while a full bespoke renovation is £15,000 to £50,000 and beyond, with £35,000 quoted as the average rather than the entry point. Worth noting that the budget end here sits above the £5,000 to £10,000 band on the pillar page: that band is B&Q pricing a new kitchen installation, whereas these figures price a full renovation, so the two measure different jobs rather than disagreeing. Set either against a refresh counted in doors at £131.10 apiece and the distance is not a matter of choosing better materials — it is a different job.

Above that sits a tier the calculator does not attempt to model, and it is worth knowing it exists before a designer names it. Homebuilding & Renovating puts a mid-range kitchen at £10,000 to £20,000, and Charlotte Butler, a kitchen design manager quoted in the same magazine, describes luxury installations landing between £40,000 and £100,000 once the associated building work, flooring, electrics and decoration are counted — the open-plan case where walls come out, steel goes in and the glazing is upgraded at the same time. Her point is the one to take from it rather than the number: clients arrive thinking about cabinetry, and the final figure is set as much by the architectural work the kitchen sits inside. If your project is really an extension with a kitchen in it, price it as an extension.

Between the extremes sits the most commonly quoted British kitchen job: pull out the old kitchen, fit a new one in the same positions. You get new units — flat-pack, rigid, or bespoke as the budget allows — new worktops, new flooring, and refreshed second-fix services, without the first-fix cost of moving anything. It suits the great majority of kitchens whose layout already works. In the calculator this is the pull-and-replace scope, and comparing it against refresh and full gut for your own floor area shows exactly how much the layout change itself costs, separate from any finish-level decision.

Its two big components are the ones the trade prices most plainly: kitchen units supply-only at £1,500 to £10,000 with £3,000 the average, and fitting an average-sized family kitchen at £2,000 to £6,000, averaging £3,500. Those two lines are not the whole job, though — worktops, appliances, flooring and second-fix services all sit on top of them — which is worth holding in mind against what households actually report spending. The HomeOwners Alliance puts 27% of UK kitchen renovators in the £10,000 to £20,000 band, more than any other.

Choose minor when the layout works, the carcasses are sound, and the kitchen is tired rather than broken — or when you are improving a property to sell and want the strongest cosmetic return on the least money. Choose major when the layout genuinely fails you, when services are old enough to need renewal anyway, or when a knock-through unlocks the way the household actually lives. The expensive mistake is the half-measure: spending refresh money on a kitchen whose layout you resent, then paying again for the major job within a few years. Run both scopes through the calculator with your floor area, finish level, and the appliances toggle, and let the size of the gap inform the decision rather than surprise you.