Bathroom Cost Calculator UK 2025

A new bathroom in the UK costs between £3,000 and £35,000+ depending on size, quality and specification. Budget: £3,000-£5,000, Mid-range: £5,000-£10,000, Premium: £10,000-£18,000, Luxury: £18,000-£35,000+. These include the suite, tiling, plumbing and labour.

A straightforward bathroom renovation takes 1-2 weeks. A full gut-and-refit with plumbing changes takes 2-3 weeks. A wet room conversion or structural changes can take 3-4 weeks. Plan for the bathroom to be out of use for the full duration.

A wet room adds £2,000-£4,000 to the cost compared to a standard bathroom. This covers: tanking (waterproof membrane for floor and walls), a linear drain or centre drain, a gradient floor (typically formed with screed), and waterproof tiling. Wet rooms are ideal for smaller spaces and accessible design.

Electric underfloor heating in a bathroom costs £1,000-£2,000 installed and adds luxury feel plus eliminates the need for a radiator, freeing wall space. Running costs are low (typically £20-£40/year for a bathroom). It is particularly worth it with tile or stone floors which feel cold without it.

A walk-in shower costs £1,500-£4,000 including the glass screen, shower tray (or wetroom floor), and installation. Frameless glass screens cost more (£500-£1,500) than framed (£200-£500). A rain shower head adds £200-£800. Walk-in showers are popular for their modern look and ease of cleaning.

The best value improvements are: good quality tiling (floor to ceiling), a walk-in shower, underfloor heating, good lighting (including a backlit mirror), and quality brassware (taps and shower). A well-designed bathroom can add 4-5% to property value. Avoid over-specifying for the property type.

Building regulations may apply for: electrical work in bathrooms (must be done by a Part P registered electrician or inspected), structural changes, new waste pipe runs or soil pipe connections, and ventilation requirements (extractor fan if no opening window). A like-for-like replacement usually does not need approval.

Bathroom tiling costs £25-£80/m² for supply and fit depending on tile type. Budget ceramic: £10-£20/m² for tiles plus £25-£40/m² for fitting. Porcelain: £20-£40/m² plus fitting. Natural stone: £40-£100/m² plus fitting. A typical bathroom needs 15-25m² of tiling.

Freestanding baths cost £500-£5,000 and create a focal point, but need more floor space and exposed pipework. Built-in baths cost £200-£1,500 and are practical with storage underneath, but look more standard. For small bathrooms, built-in is more space-efficient. For larger bathrooms, freestanding adds the wow factor.

Some tasks are DIY-friendly: painting, fitting accessories, replacing taps, and basic tiling. However, plumbing should be done by a qualified plumber, electrical work must be Part P compliant, and tanking for wet rooms requires specialist skills. A badly waterproofed bathroom can cause thousands in damage to floors below.