Toilet installation across London
Taking out an old toilet and fitting a new one in its place takes a morning and is no more complicated than it sounds. Moving a WC, fixing a wall-hung pan to a support frame, or installing one where no soil connection has ever existed is another matter. Those jobs raise different questions, and it pays to ask them before you buy the suite, not after it has been delivered.
- Fully insured and Gas Safe registered
- Engineers DBS-checked
- 24/7 emergency callouts
- Price agreed before we start
- Workmanship guaranteed
Monday – Sunday, 7:00 AM – 10:00 PM · Out-of-hours emergency? Call 020 3576 5825
Get a price for toilet installation
Name, phone and postcode are all we need to start. Everything else can wait.
Thank you — your enquiry is in
Expect a call back on the number you entered. For anything urgent, there is no need to wait: ring 020 3576 5825.
Included in the job
- New or replacement toilets, supplied by us or by you
- Wall-hung, back-to-wall and close-coupled pans
- Support frames and concealed cisterns
- Relocating a toilet
- Changes to waste and soil pipes
- WCs for en-suites and cloakrooms
- Repairs to cisterns and flush mechanisms without a new suite
Read this before you ring
You may find you can sort some of this yourself, without calling us. We are fine with that, and would rather you knew it.
Take measurements before ordering
Whether a toilet will suit your existing pipework comes down to the gap between the wall and the centre of the waste, plus the height and width of the cistern. Send us a side-on photo of your current toilet along with the model you like, and we can confirm it before you place the order.
A wall-hung pan needs a frame and a strong wall
The pan is not held up by plasterboard. Its weight sits on a steel frame concealed behind the wall. It looks neater and the floor underneath is easier to clean, but the frame takes up more room in the wall than most people imagine. In a cramped London cloakroom, that depth is often what settles whether wall-hung can work at all.
Hidden cisterns must stay reachable
Sooner or later someone will need to get at what is behind the panel, because the flush valve and inlet valve are the parts that wear out. An access panel is essential. Tiling over the lot is a choice that is costly to reverse.
A toilet that rocks will start to leak
Over the months, the movement loosens the waste seal, and by the time water marks the ceiling below it has normally been leaking for some time. If your toilet shifts when you sit on it, get it sorted now.
What changes the price
Swapping a toilet is one of the smaller plumbing jobs there is, yet quotes for it still differ. Nearly all the difference comes from what happens behind and underneath the pan rather than the toilet you pick.
The style of toilet
A close-coupled toilet on an existing waste is the simplest fit. Back-to-wall pans need a unit or boxing to hide the cistern, and wall-hung pans need a steel frame and a false wall built, boarded and tiled before the pan goes on.
Lining up with the soil pipe
If the new pan’s outlet meets the existing soil pipe at the same height and position, a standard connector does it. Different heights, an offset, or an old cement joint into cast iron that has to be cut out carefully all add parts and time.
The floor under the old one
An old toilet that has leaked for years often leaves soft or rotten boards underneath, and they need replacing before a new pan is screwed down. A new toilet with a smaller footprint can also leave an untiled outline where the old one stood.
Where the water supply comes in
Older cisterns are usually fed from the side. Many new ones take the supply from underneath or from behind, so the pipe and isolating valve have to be moved to suit. It is a small change, but worth knowing about when choosing a model.
We agree the price with you before any work begins, and accept both card and cash.
Questions we often get
Will you fit a toilet I bought myself?
Yes, Ninja Plumbers regularly fits toilets that customers have supplied. Send us the model ahead of the visit so we can check the waste position lines up and let you know if any adaptors are needed.
How much time does a simple swap need?
Replacing like for like usually takes a morning. Anything that means moving the waste, or fitting a wall-hung frame or concealed cistern, takes longer, and we quote for it once we have seen the room.
Can the toilet be moved to a different part of the room?
In some cases. It hinges on whether the waste can run downhill to the soil stack. Where it cannot, the fallback is a macerator, and we will explain that honestly rather than reach for it by default.
Will you remove the old toilet?
Yes, and that is included. Where possible, old ceramics are recycled instead of going into a skip.
Can a toilet go under the stairs or in a cupboard?
Often, yes, and in a London terrace the space under the stairs is a popular spot for a cloakroom WC. What decides it is whether a waste can reach the soil pipe or drain with enough fall, whether there is headroom to use it comfortably, and ventilation — a WC without a window needs an extractor fan. Where a gravity waste is not possible, a macerator is the fallback, with its own trade-offs.
Can you fit a shower toilet with a built-in bidet wash?
Yes, but check the room before buying one. Most shower toilets need a fused electrical supply close to the pan, which our electricians can fit, as well as a water feed and the usual waste. Some are wall-hung and need a frame, and the seat unit adds depth, which matters in a narrow cloakroom. Send us the model and a photo of the space and we will say whether it will work.
Other bathroom jobs we do
-
Bathroom Installation
Anything from swapping one fitting to stripping out and refitting the whole room, priced before work starts.
Read about Bathroom Installation -
Shower Installation
Mixer, thermostatic and digital showers fitted — matched to the water system you actually have.
Read about Shower Installation -
Shower Repair
Weak flow, wandering temperature, no hot water or a leak — diagnosed and repaired, usually without a new shower.
Read about Shower Repair -
Bath Installation
One bath out, another one in — or the bath out and a shower in its place.
Read about Bath Installation -
Wet Rooms & Walk-In Showers
Full wet rooms and level-access showers. The tanking and falls underneath decide if it will leak within five years or never leak at all.
Read about Wet Rooms & Walk-In Showers -
Commercial Washroom Refurbishment
Staff and customer toilets, washrooms and changing rooms stripped out and refitted, planned around your trading hours.
Read about Commercial Washroom Refurbishment
Businesses use us for toilet installation too, among them nurseries and childcare.
Looking for toilet installation in London?
Tell us what is wrong and where you are, and you will have the price before any work begins.