"Toilet refurbishment" covers two very different jobs, and most of the confusion in Central London flats starts with not separating them. One is swapping a tired suite for a new one in the same footprint — pan, cistern, seat, maybe a basin, same pipework. The other is a cloakroom or WC that also needs the floor, tiling, waterproofing and sometimes the layout redone. They cost different amounts, take different amounts of time, and one of them is very often a false economy compared with doing the whole room properly. This page sets out both, and how to tell which one you actually have.
The two jobs, and what they cost
If the pan, cistern and any basin are simply being swapped for new ones — same positions, same waste run, no retiling — that's a replace suite only (like-for-like) job, priced from £1,800. It's the cheapest route into a refurbished-feeling WC and the fastest, because nothing structural or wet-trade moves.
If the room also needs new tiling, flooring, waterproofing behind the pan and basin, and possibly a repositioned cistern or a new extractor, that's a compact / cloakroom refurbishment, priced from £5,500. This is the realistic figure for a genuine "gut and redo" of a small downstairs WC or an en-suite toilet room in a mansion flat — new suite, new surfaces, first and second fix plumbing and tiling done properly rather than patched around the old layout.
Both figures exclude VAT and are starting points — the actual number depends on what's found once fittings come off the wall, which is why any firm quoting a fixed price sight-unseen for a cloakroom job is either padding for the worst case or guessing.
What a toilet refurbishment actually involves
- Isolate and disconnect. Water off at the isolation valve, cistern and pan disconnected, waste pipe checked for condition — in older stock the soil pipe behind a WC is often the oldest and least-inspected run in the flat.
- Remove the old suite. Old pans, especially close-coupled units bedded on old adhesive or a lead bend, can be more work to remove cleanly than to fit new.
- Check the floor and waste run. If the WC sits on a solid floor with a concealed waste, moving the pan even a few centimetres can mean breaking up flooring — this is usually the point where a "quick swap" turns into a bigger job.
- Waterproof where needed. Around a WC there's less standing water than a shower, but splashback at floor level and behind a wall-hung cistern still needs proper sealing, not just silicone smeared over old grout.
- Fit the new suite and reconnect. Pan, cistern mechanism, seat, and — if a basin is included — taps and waste trap.
- Ventilation. A windowless WC needs mechanical extraction that actually moves air, not a fan that spins but is disconnected from its duct — see extractor fan installation for bathrooms if the existing one has never worked properly.
- Test and snag. Flush, check for leaks at every joint, confirm the seat doesn't rock and the cistern refills correctly.
Where the job stays inside "replace suite only," most of that list is quick. Where it becomes a cloakroom refurbishment, the floor and waterproofing steps are the ones that actually take the time — and the ones a rushed quote tends to skip.
What pushes a toilet job over budget
A handful of things reliably turn a simple swap into a bigger job, and they're worth checking before you book anything:
- Old lead or cast-iron waste pipework. If the connection to the soil stack is original, it may need updating regardless of whether you touch the suite — see lead pipe replacement in London if the property is pre-war.
- A concealed cistern in a stud wall. Fitting or replacing one means opening the wall, not just unscrewing a pan.
- No isolation valve, or one that's seized. Common in flats that haven't been touched since they were built — this alone can add an hour before the real work even starts.
- A blocked or slow-draining pan already. Worth ruling out before assuming it's the suite — our guide to a blocked toilet in a London flat and to a toilet not flushing properly covers the difference between a fault and a fitting that genuinely needs replacing.
- Mansion block consent. If waste runs, floor structure or anything beyond a like-for-like swap is involved, check what your lease requires — our page on freeholder consent for bathroom refurbishment covers when a licence to alter is needed, which is more often than most leaseholders assume.
When a full bathroom refurbishment is the better buy
This is the judgement call that actually saves money, and it comes up constantly on toilet-only enquiries. If the WC sits inside a bathroom — rather than being a standalone cloakroom — and the rest of the room is also tired, doing the toilet on its own is usually the expensive option in disguise.
The reasons are practical, not upsell:
- You pay for access twice. Lifting flooring, opening a wall, or disturbing tiling to deal with the WC's waste run costs roughly the same whether you're also redoing the bath or shower next to it. Doing it once, for everything, avoids paying that access cost a second time in six months.
- Grout, sealant and tiling don't age at different speeds. If the toilet area's tiling is failing, the rest of the room's is usually close behind. A new suite next to failing grout looks and functions worse, not better.
- Trades are already on site. A bathroom refurbishment — a typical full re-fit is from £7,000 — already includes the plumber, tiler and electrician; a standalone toilet job pays their call-out and setup cost for a fraction of the work.
- First and second fix is priced as a package. Bathroom installation — first and second fix labour — runs from £2,800, and that figure already assumes a full room; splitting it into a toilet-only job and a "later" bath job means paying setup costs twice.
The rule of thumb: if the WC is standalone (a genuine cloakroom, downstairs loo, or separate toilet room), a compact refurbishment at from £5,500 is the right scale of job and doesn't need to become anything bigger. If the WC shares a room with a bath or shower that also needs work, get a quote for the whole room before committing to the toilet alone — our guide on how long a bathroom refurbishment takes is worth reading alongside a quote, because the timeline difference between doing it once and doing it twice is usually bigger than the price difference.
If you're weighing this up alongside other wet rooms in the property, or planning works across a kitchen and bathroom at the same time, the sequencing matters — see kitchen and bathroom refurbishment sequencing for what should happen in what order.
Getting an accurate price
A toilet job is one of the few refurbishment jobs where a photograph genuinely tells us most of what we need to know: the current suite, the floor finish, and whether the cistern is concealed or exposed. Send that through and we can tell you honestly whether you're looking at a like-for-like swap from £1,800, a full cloakroom refurbishment from £5,500, or whether the room next door means a full bathroom quote makes more sense. Get a fixed quote or WhatsApp a photo, and we'll tell you which of the three you're actually buying before any work starts.
All prices quoted here exclude VAT and are starting points — the figure is confirmed as a fixed, itemised quote once we've seen the job, not adjusted upwards once we're on site.