How to Plan a Bathroom Renovation in London: A Complete Guide

Planning a Bathroom Renovation in London: Where to Begin

A bathroom renovation in London is one of the most disruptive and most rewarding home improvement projects you can undertake. Done well, it transforms a dated or dysfunctional space into something that adds genuine value and daily pleasure. Done poorly, it creates months of problems and unexpected costs. The difference almost always comes down to the quality of the planning, not the quality of the tradespeople.

Setting Your Budget

The first decision is a realistic budget. London labour costs are higher than the national average, and material supply chains serving the London market tend to reflect this. As a broad guide: a basic bathroom renovation — replacing sanitaryware and tiling in an existing layout without moving plumbing — will cost between £3,000 and £5,000. A mid-range renovation with some layout changes, new shower enclosure or bath, quality tiles, and decent sanitaryware runs from £5,000 to £8,000. A premium renovation with a wet room, designer sanitaryware, heated floor, and high-specification finishes starts at £8,000 and can exceed £15,000 in larger or more complex rooms.

Whatever your budget, build in a contingency of at least 15 percent. London bathrooms frequently reveal surprises once work begins: rotten floorboards under the bath panel, corroded pipework hidden behind the toilet, inadequate ventilation that has caused mould inside the wall structure. These are not contractor failures — they are concealed defects that only become visible once the room is stripped.

Design Choices: Bath, Shower, or Wet Room?

The most fundamental design decision is the shower arrangement. A bath-only bathroom limits resale appeal to families. A shower-only configuration suits most London flat buyers but may disadvantage a family sale. A combined bath and separate shower enclosure is the most versatile but requires sufficient floor area — typically a minimum of four square metres to accommodate both without the room feeling cramped.

A pod or prefabricated shower enclosure is the fastest and most budget-friendly shower option but offers limited customisation. A tiled shower with a tray allows complete design freedom. A wet room — a fully tanked floor-level shower with no tray or screen — delivers a premium feel and is particularly suited to accessible bathrooms, but requires more preparation, skilled waterproofing, and a higher budget.

Material Selection

Tiles are the single largest visual element in most bathrooms and the area where material choices have the greatest impact on the final result. Budget ceramic tiles cost between £10 and £20 per square metre; mid-range porcelain from £20 to £50; premium stone, large-format porcelain, or designer tiles from £50 upward. Larger format tiles create a cleaner, more contemporary look but require a flatter substrate and more precise installation — expect higher labour costs. Mosaic tiles as feature panels can add interest at reasonable cost but increase grout lines and maintenance.

Sanitaryware quality varies enormously at similar price points. Brand recognition is less important than the quality of the ceramic, the mechanism quality of concealed cisterns, and the robustness of chrome finishes. Mid-range brands from established European manufacturers generally offer better long-term reliability than unbranded budget alternatives.

Timeline Planning

A straightforward bathroom renovation in London takes one to two weeks from strip-out to final tiling and sealant. More complex projects — wet rooms, full replumbing, structural alterations — take two to three weeks. Factor in the lead time for materials, which for custom or imported tiles can extend to four to six weeks. If you are renovating a tenanted property, you must plan for the period during which the bathroom is unavailable and arrange either alternative facilities or a rent reduction, depending on your tenancy agreement terms.

Finding a Contractor

In London, the bathroom renovation market ranges from excellent specialist bathroom fitters to general builders who treat bathroom installation as a side-line. Request itemised quotes from at least three contractors. A quote that does not separate labour from materials, or that does not specify what is and is not included, is not a reliable basis for comparison. Check that your contractor carries public liability insurance and can demonstrate completed bathroom projects.

Building Regulations and Part P Compliance

Any new electrical circuit in a bathroom — a new shower circuit, additional lighting, heated towel rail on a new spur — must comply with Part P of the Building Regulations. The work must either be carried out by a competent person registered with a Competent Person Scheme or notified to and inspected by the local building control authority. Your contractor should handle this, but confirm in writing before work begins.

Flats: Additional Considerations

If your bathroom is in a London flat, notify your building management company or freeholder before works commence. Most leases require consent for alterations, and some require sight of the contractor and a method statement for works involving water. If your property is in a conservation area or is listed, check whether planning permission or listed building consent is required before undertaking structural alterations — unusual for a straightforward bathroom renovation but relevant if you are combining rooms or altering external walls.