A bathroom renovation is one of the most common big spends in a UK home — and one of the easiest budgets to lose control of. Individual items look affordable in the showroom; it is the combination of labour, materials and small fittings that surprises people. This guide breaks down what a bathroom refit typically costs, where the money actually goes, and how to budget so the project does not stall halfway.
What a bathroom renovation typically costs
Prices vary a lot by region, the size of the room and the finish you choose, but as a rough guide most standard UK bathroom refits fall somewhere between £4,500 and £10,000. A small cloakroom or a like-for-like refresh (new suite in the same positions, existing tiles kept) can come in below that range, while a large family bathroom or en-suite with layout changes, premium tiles and branded fittings can go well above £10,000. London and the South East usually sit at the top of the range because labour costs more there.
The single biggest factor is whether you move things. Keeping the toilet, bath and shower in their current positions reuses the existing pipework. Moving them means new plumbing runs, more labour, and a bigger bill.
Where the money goes
- Labour — usually 40–50% of the budget. A full refit involves a plumber, often an electrician, a tiler and sometimes a plasterer and decorator. Skilled trades are the largest cost, and the main reason quotes differ.
- Sanitaryware. Bath, toilet, basin and shower. Basic white suites are inexpensive; designer shapes and wall-hung fittings cost more and can need stronger frames and extra installation work.
- Tiles and flooring. The tiles themselves plus adhesive, grout and the tiler’s time. Large-format tiles and intricate patterns take longer to lay.
- Fittings and finishing. Taps, shower valves, screens, mirrors, lighting, extractor fan — and the drainage. Each one is a modest line on the quote; together they regularly add up to £500–£1,500.
- The unglamorous essentials. Skip hire, waste removal, waterproof tanking behind the shower, and making good walls and ceilings afterwards.
Small fittings, real money: the shower drain example
Drainage shows how a small choice carries a real cost. A standard round shower waste is a few pounds. A modern square or linear drain — chosen because it suits large tiles and gives a cleaner, walk-in look — costs more for the part itself and needs careful, level installation so water flows properly. If you like that style, browse square shower drain options before you commit, and confirm with your installer that the tray and floor build-up suit the drain you pick. The lesson generalises: decide fittings early, because changing them mid-project is where budgets leak.
How to keep the budget under control
- Fix the layout. Keep plumbing where it is unless there is a strong reason to move it.
- Choose everything before work starts. Suite, tiles, taps and fittings agreed up front means no delays and no rushed, expensive substitutions.
- Get three itemised quotes. A single total tells you nothing; an itemised quote shows where each firm’s money goes and makes comparisons honest.
- Hold a contingency. Keep 10–15% back for what you cannot see — rotten floorboards, old pipework and uneven walls are common in older UK homes.
- Spend on what you touch daily. A good shower valve and taps earn their money; decorative extras can wait.
Paying for it
Most people fund a renovation from savings, which avoids interest altogether. If you borrow, compare the total repayable, not just the monthly payment, and be wary of stretching a loan over many years for a room that may need refreshing again in ten. Improving the bathroom at the same time as other work — for example while upgrading a flat’s energy efficiency or adding solar — can also share labour and scaffolding costs, so it is worth planning the order of jobs across the whole property rather than treating each room in isolation.
A bathroom renovation does not need a luxury budget to feel like a transformation. A fixed layout, fittings chosen early, itemised quotes and a sensible contingency will get most households a result they are happy with — at a price they chose, rather than one that chose them.
