Bathroom Renovation Guide UK — Costs 2026
A bathroom renovation is one of the most impactful home improvements you can make. A dated bathroom puts buyers off more than almost anything else, while a modern, well-fitted bathroom adds £5,000-15,000 to your property value. This guide covers realistic costs, timelines, and the decisions that matter most.
Bathroom Renovation Costs 2026
| Budget Level | Total Cost | What You Get |
|---|---|---|
| Budget | £3,000-5,000 | Basic suite, ceramic tiles, replacement fittings |
| Mid-range | £6,000-10,000 | Quality suite, porcelain tiles, new plumbing, heated rail |
| Premium | £10,000-18,000 | Designer suite, wall-hung, underfloor heating, walk-in shower |
| Luxury | £18,000-30,000+ | Freestanding bath, wet room, smart toilet, natural stone |
Cost Breakdown
| Item | Budget | Mid-Range | Premium |
|---|---|---|---|
| Bathroom suite | £300-600 | £800-1,500 | £2,000-5,000 |
| Tiles (supply) | £200-500 | £500-1,200 | £1,500-4,000 |
| Labour (fitting) | £1,500-2,500 | £2,500-4,000 | £4,000-7,000 |
| Plumbing changes | £300-600 | £600-1,200 | £1,200-2,500 |
| Electrics | £200-400 | £400-800 | £800-1,500 |
Planning Your Bathroom
The most important decision is layout. Keeping the toilet, basin, and bath/shower in their current positions saves £1,000-3,000 in plumbing costs. Moving them means rerouting waste pipes and water supply, which adds significant time and expense. Only move fixtures if the current layout is genuinely bad.
Bath vs Shower vs Both
If you have one bathroom, keep the bath — families need them, and estate agents say a property without a bath is harder to sell. If you have a second bathroom or en-suite, a walk-in shower is the premium choice. Shower-over-bath with a glass screen is the practical compromise for most UK bathrooms.
Tiles
Large format tiles (600x600mm or larger) make small bathrooms look bigger. Fewer grout lines means less maintenance and a cleaner look. Porcelain tiles are harder-wearing and more water-resistant than ceramic. Wall-to-wall tiling looks more premium but costs more. At minimum, tile fully behind the bath/shower and half-height elsewhere.
Budget tip: Topps Tiles, Porcelain Superstore, and Tile Mountain run regular sales with 40-60% off. Buy 10% more than you need for cuts and breakages.
Underfloor Heating
Electric underfloor heating mats cost £300-600 to supply and install in a typical bathroom. They add genuine luxury — warm feet on cold mornings — and remove the need for a radiator, freeing up wall space. Running costs are low because the area is small (around £20-30/year). Install before tiling — it is almost impossible to retrofit.
Ventilation
Poor ventilation causes mould, peeling paint, and damp. Building regulations require an extractor fan in any bathroom without an openable window. Even with a window, a humidistat-controlled fan is worth fitting — it runs automatically when humidity rises and stops when the air is dry. Budget £100-200 installed.
Hiring a Bathroom Fitter
A good bathroom fitter handles plumbing, tiling, and general fitting. Electricians and plasterers are usually separate trades. Get at least three written quotes. Ask to see previous work — photos and customer references. Check they have public liability insurance. A typical family bathroom takes 5-10 working days to complete.
Common Mistakes
- Choosing style over function — that vessel basin looks amazing on Instagram but is impractical for daily use. Prioritise usability.
- Underestimating costs — always add 15-20% contingency. Hidden issues (rotten joists, old plumbing) only appear once you start stripping out.
- Forgetting storage — toiletries, towels, cleaning products. A vanity unit with built-in storage beats a pedestal basin every time.
- Poor waterproofing — tanking (waterproof membrane) behind tiles in wet areas is essential. Skipping it leads to leaks, mould, and expensive repairs.