Bathroom Renovation Budget UK: What to Plan for in 2026

Most bathroom renovations go over budget for the same reason: the plan only covers the visible things. Here is how to build a realistic budget for a UK home in 2026.

What a bathroom typically costs

According to a 2026 cost guide from Bathroom Mountain, a new bathroom in the UK ranges from £4,500 to £11,000, with an average spend of around £6,500. The same guide splits projects into three tiers: budget (£2,000 to £4,500, typically cloakrooms or compact en suites), standard (£4,500 to £9,000, family bathrooms with mid-range finishes) and premium (£10,000 to £20,000+, large en suites and wet rooms). It suggests £6,500 to £8,000 supports a complete mid-range installation for most households.

Treat these as guide figures, not quotes. Your own prices will depend on the size of the room, what has to be moved and who is doing the work.

Labour is roughly half the bill

The same source puts labour at 45 to 60 percent of the total, with materials at 40 to 55 percent. It also reports Greater London costs running 12 to 18 percent above the national average, and a typical installation taking 6 to 10 working days. The practical lesson: a cheaper fitting does not shrink the labour cost, so moving pipework or changing the layout is where budgets drift.

Where to spend and where to save

Spend on the things you touch and rely on daily, and on anything hidden behind walls. Heating is a good example. A designer radiator replaces a basic one in the same spot, so it upgrades the room without adding plumbing work. If you are considering a bidet toilet, a wall hung bidet toilet needs the wall and frame planned in at the start, so decide before the walls are closed up rather than after.

Save where changes are easy later: paint, accessories and lighting can be swapped without disturbing anything else.

Build in a buffer

Set aside a contingency for surprises such as damp, old pipework or uneven walls; a common rule of thumb is around 10 to 15 percent of the total. Get at least three itemised quotes, confirm what is included, and order fittings before work starts so delays do not stall the fitter.

For more ideas and products to price up, visit Ultra Bathroom.