Bathroom & Kitchen Renovation Costs in the UK (2026)

Bathrooms and kitchens are the two rooms that sell houses — and the two rooms where renovation budgets most often spiral out of control. The headline price you're quoted is rarely the price you pay, because so much of the cost is hidden behind walls and under floors until the work begins. This guide breaks down realistic UK figures for 2026, where every pound goes, and how to keep your project on budget. All figures exclude VAT and professional fees.

Bathroom Renovation Costs at a Glance

A budget or cloakroom refit is a like-for-like swap in a small space — a new WC, basin and some fresh tiling, with services staying broadly where they are. A standard family bathroom is the most common job: new bath or shower enclosure, vanity unit, full wall and floor tiling, and a refreshed layout. A wet room or high-end suite brings in tanking, underfloor heating, premium sanitaryware, large-format tiles and bespoke joinery — and the labour intensity rises sharply.

Where the Bathroom Money Goes

On a typical £7,500 standard bathroom, the spend splits roughly as follows. Note how dominant tiling and labour are — sanitaryware is rarely the biggest line.

Tiling alone can swallow a third of the budget once you account for both supply and the day rate to fit it — large-format and patterned tiles are slower to lay and waste more material. As a rule of thumb, labour accounts for 45–55% of a bathroom refit, with materials making up the rest.

Kitchen Renovation Costs at a Glance

A budget kitchen uses flat-pack carcasses with laminate doors and worktops, standard-spec appliances and a like-for-like layout. A mid-range kitchen steps up to rigid (pre-assembled) units, quartz or solid-surface worktops, integrated appliances and some layout changes. A high-end or bespoke kitchen is made-to-measure cabinetry, stone worktops, top-tier appliances and often a reconfigured or extended room.

Where the Kitchen Money Goes

On a £16,000 mid-range kitchen, a typical breakdown looks like this:

Worktops are the line that scales hardest. Laminate runs £150–£300 per linear metre fitted; quartz and granite £350–£700; and premium materials such as Dekton or marble can exceed £900. A single large island in stone can add £3,000–£5,000 on its own.

Kitchen Extensions

Many kitchen projects are really extensions in disguise. A single-storey rear extension to house a larger kitchen-diner typically costs £2,200–£3,000 per m² of build cost in 2026 — before the kitchen itself goes in. A 20m² extension plus a mid-range kitchen fit-out can therefore easily reach £60,000–£80,000+. Add bifold or sliding doors, rooflights and underfloor heating and the build cost climbs further.

Labour vs Materials

Across both rooms, the split is more even than most people expect. Bathrooms lean labour-heavy because of the tiling and waterproofing involved — roughly 50/50 to 55/45 labour to materials. Kitchens lean slightly more towards materials because units, worktops and appliances are the big-ticket items, so expect closer to 40% labour, 60% materials. Either way, treating labour as an afterthought is the single most common budgeting mistake.

The Hidden Costs That Wreck Budgets

Asbestos — properties built or refurbished before 2000 may contain asbestos in artex ceilings, floor tiles or pipe lagging. A survey costs £200–£400 and licensed removal can add £500–£2,000+ if it's found.

Rot and damp — pulling out an old bath or sink unit frequently reveals rotten joists, perished plumbing or hidden leaks. Repairs can range from a few hundred pounds to several thousand if structural timber is affected.

Rewiring — older kitchens and bathrooms often don't meet current wiring regulations. A new kitchen typically needs additional circuits for appliances; budget £800–£2,500 if a partial or full rewire of the room is required.

Moving services — relocating a soil pipe, gas hob, sink or radiator is far more expensive than keeping them in place. Each move can add £300–£1,000. The cheapest renovation is one that keeps the plumbing and gas roughly where they already are.

Structural changes — knocking through to create an open-plan kitchen-diner almost always means inserting an RSJ (steel beam). Allow £1,500–£4,000 for the beam, structural engineer's calculations and building control sign-off — more if the wall is load-bearing across a wide span.

How Long Does It Take?

A straightforward bathroom refit runs 7–10 working days; a wet room or high-end suite, 2–3 weeks. A kitchen refit in the same footprint takes 2–4 weeks, but a kitchen forming part of an extension is a multi-month project once the build, first fix, plaster-dry and second fix are added up. Worktop templating and fabrication also build in a fixed 1–2 week wait between fitting the units and installing stone tops.

How to Avoid Scope Creep

Scope creep — the steady drift of "while we're at it" additions — is what turns a £9,000 kitchen into a £15,000 one. Three habits keep it under control:

Finalise the design before work starts. Changing your mind on tile, worktop or layout once the fitter is on site triggers abortive work and re-orders. Lock the spec first.

Get an itemised quote, not a lump sum. A single headline figure hides where the money goes and makes variations impossible to track. A line-by-line Bill of Quantities lets you see the cost of every change before you commit to it.

Decide your contingency rules up front. Agree with your contractor how unexpected finds (rot, asbestos, dodgy wiring) will be priced and approved before they're fixed — so surprises are decisions, not invoices.