From brand-new bathroom installations and en-suites to complete refurbishments, we deliver London bathrooms, shower rooms and wet rooms built to last: properly tanked, correctly ventilated and beautifully tiled. Plumbing, electrics, waterproofing, tiling and decoration are handled by one team, and every installation carries a 10-year waterproofing guarantee.
Written Guarantee: 10 Years
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Average Timeline Range: 2 - 4 weeks
Waterproofing Before Beauty
Most bathroom failures we are called to repair were caused at installation: no tanking behind the shower, movement-prone boards tiled without decoupling, silicone doing a job that membrane should have done. The damage appears two floors down in someone else’s ceiling — a particular liability in London flats.
Every Apex bathroom is built waterproof first. Wet zones are tanked with a full membrane system, wet rooms receive formed falls and tested trays, and penetrations are sealed with gaskets rather than mastic and hope. We pressure-test pipework before closing anything up and photograph every stage so you can see what is behind your tiles.
It is why we can offer a 10-year guarantee on waterproofing — and why a meaningful share of our work is rebuilding bathrooms other contractors finished only eighteen months earlier.
Design and Specification That Suit the Building
A bathroom in a Victorian conversion is a different engineering problem from one in a 1930s mansion block or a new build. Joist direction dictates where waste runs can go, water pressure determines shower choice, and floor build-up height decides whether a level-access wet room is realistic. We survey all of this first, then design around it — rather than selling you a brochure photo the building cannot deliver.
Our designers produce a full specification: sanitaryware, brassware, tiles, stone, lighting, heated towel rails and underfloor heating, with alternatives at different price points for each line. We supply from trade partners at better-than-showroom prices, or install client-supplied items happily.
Electric underfloor heating, demisting mirrors and proper extraction are specified as standard in most projects — small costs at build stage, expensive regrets afterwards.
What London Bathrooms Cost in 2026
A complete bathroom refurbishment in London — strip-out, first-fix plumbing and electrics, tanking, tiling, sanitaryware, decoration and certification — typically costs £8,000 to £25,000 at 2026 prices. The lower end covers a compact bathroom with quality trade fittings; the upper end a large bathroom or wet room with premium brassware, porcelain or natural stone and underfloor heating. Genuinely top-end Central London bathrooms with book-matched stone run beyond £30,000.
Labour and installation are roughly half the cost, which is why a cheap quote usually means corners cut in exactly the places you cannot inspect. Within a full property refurbishment, bathrooms and the kitchen together typically absorb 30–40 per cent of the overall budget.
A standard bathroom takes two to three weeks on site; wet rooms and bathrooms requiring structural work, three to four.
Certified Technology & Material Specifications
To maintain our Renowise prestige guarantee levels, our regional surveyor vans carry specialized heavy-duty diagnostic rigs and certified premium hardware.
How much does a bathroom refurbishment cost in London?
Between £8,000 and £25,000 at 2026 prices for a complete refurbishment, depending on size and specification — compact bathrooms with quality trade fittings sit at the lower end, large bathrooms and wet rooms with premium stone at the upper. We quote fixed, itemised prices after a free survey.
How long does a bathroom refurbishment take?
A standard bathroom takes 2–3 weeks on site; wet rooms or bathrooms involving structural alterations take 3–4 weeks. If it is your only bathroom, we sequence the work to restore a working toilet and shower as early as possible.
Can you build a wet room in a London flat?
Usually yes, subject to floor build-up: a level-access wet room needs depth for falls and a formed tray, which we confirm at survey. In leasehold flats a new wet room generally requires freeholder consent and acoustic compliance, both of which we handle.
What guarantee do you offer on bathrooms?
Ten years on waterproofing and our installation workmanship, alongside the manufacturers’ warranties on sanitaryware and brassware. Every bathroom is pressure-tested and photographed at each stage before tiling, and electrical work is certificated to BS 7671.
Apex Written Guarantee
We provide a fully comprehensive, written 10-Year guarantee covering all structural reinstatement, moisture boundaries, and finish coatings.
100% Insurance Protected
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