Bathroom renovation in London — the questions people actually ask

Across London, a mid-range full bathroom renovation typically runs £8,000–£15,000, with a straightforward cosmetic refresh from around £3,000–£6,000 and a high-specification job with underfloor heating, a wet room and premium sanitaryware reaching £20,000 or more. Our own four most recent projects — in Streatham, Woolwich, Shepherd's Bush and Mill Hill — landed between £11,500 and £16,000, which sits squarely in that mid-range bracket for a proper full renovation, not a surface-level refresh.

The number that actually matters is the one on your contract, not a national average. Room size, the layout (moving pipework costs far more than keeping it where it is), and your choice of tiles and sanitaryware all move the price. That's why we survey before we quote — so the figure you're given reflects your bathroom, not a guess.

It means the figure on your contract is the figure you pay. We survey the room properly before quoting, so the scope is understood before anyone commits.

The only things that change the price are changes you ask for. If you decide mid-project that you'd like different tiles, we price the difference in writing and you approve it before we order anything.

A tired, dated bathroom is one of the first things a buyer or valuer marks down, and a properly finished renovation is one of the more reliable ways to close that gap — particularly a second bathroom or ensuite added to a London flat or terrace where storage and bathroom count are both at a premium. We won't quote you a precise percentage uplift, because it genuinely depends on your property, area, and the condition of the rest of the house — but a fixed-price renovation with a 24-month warranty and Constructionline Gold-accredited work is easier to stand behind at a survey or sale than anything done on the cheap.

Two separate clocks are running, and it's worth knowing the difference. On-site work — the part where your bathroom is actually out of action — took two to five weeks across our last four projects, depending on scope. But before that, there's survey, design sign-off, and lead time on tiles and sanitaryware, which commonly adds four to eight weeks on top, especially for anything made to order rather than held in stock.

So a realistic total from "we've agreed to go ahead" to "keys back in your hand" is often six to twelve weeks, even though the disruptive part — no bathroom — is much shorter than that. We'll give you both numbers at survey: how long we're on site, and how long until we can start.

Our four most recent bathroom projects took between two and five weeks on site. A straightforward like-for-like refit sits at the shorter end; moving the layout, converting to a wetroom or working around structural changes pushes it longer.

If it's your only bathroom, tell us at survey. We sequence the works so the toilet is out of action for the shortest possible window, and we'll discuss temporary washing arrangements before we start.

Almost never, for a standard bathroom or ensuite renovation. You'll lose use of that specific room for the time we're on site, but there's no reason to leave the property unless the work involves major structural changes affecting the rest of the house — which is rare for a bathroom job. If it's your only bathroom, that's the thing to plan around, not moving out; see the timeline question above for how we handle that.

You can, and most of our clients do. We'll give you the exact quantities and tolerances, and we'll flag anything we think will cause a problem on site before you order it.

Bear in mind that where you supply the goods, any manufacturing fault or shortfall in quantity is between you and your supplier — which can hold up the programme. Where we supply, that's our problem to solve.

Roughly: strip-out, then first-fix plumbing and electrics (the pipework and cabling that has to be in the walls and floor before anything covers it), then waterproofing and tanking, then tiling, then second-fix — taps, the shower, the toilet, the basin — going in last against finished surfaces. Getting this sequence wrong is one of the most common ways DIY and unmanaged trade jobs go over budget: sanitaryware fitted before tiling, or tiling done before the waterproofing has cured properly.

You don't need to manage this yourself — it's what a named project manager and a proper schedule are for — but it's worth knowing the order so you understand why a quote from someone skipping stages might look cheaper.

We hold Constructionline Gold, the pre-qualification standard used by public sector and large private clients to vet suppliers on finance, insurance, and capability. We are also SSIP accredited, meaning our health and safety management has been independently assessed against a recognised scheme.

Uz Pro Construction Ltd is registered in England and Wales, company number 15916308.

Yes — a large share of London bathroom work is in flats and Victorian or Edwardian houses, and both bring their own problems: lath-and-plaster walls, out-of-square rooms, floors that are nowhere near level, and soil stacks that can't easily be moved.

In conservation areas we'll tell you honestly at survey whether consent is likely before you spend anything on design.

Start with the estimator on the homepage — four questions and about a minute — which gives you a realistic range based on our own recent London projects. That's enough to tell you whether we're in the right ballpark before either of us spends any time.

If the range works, book a free survey. We come to you, measure up, check substrate and water pressure, and come back with a full specification and a fixed price. There's no charge and no obligation to proceed.