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Planning your cloakroom

Downstairs toilet ideas: planning the room your guests use

A downstairs toilet is usually the smallest room in the house and the one visitors are most likely to use. It has to take a toilet and a basin, hide the cistern and the pipes, clear its own air and still look as if it belongs to the house around it. Two cloakrooms we have fitted, one in Nottingham and one in Chilwell, show how.

16 October 2026·9 min read

By the Goldswan Bathrooms team, Arnold
Round white bowl basin on a white veined vanity top, with a brushed brass wall mounted spout and lever and a brushed brass flush plate set into grey brown marble effect tiles
One of ours in Nottingham. A bowl basin on a wall hung vanity, with the tap and the flush plate in the same brushed brass.

The room left alone longest

A downstairs WC is often the room nobody has touched since the house was built. The Nottingham one in this article had a close coupled toilet, a basin set into a cream cabinet, one light in the middle of the ceiling and a vinyl floor, in a space not much wider than its own door.

In a room that size, the toilet, the basin, the door and the person using them all want the same strip of floor. So the decisions that matter come before anyone chooses a tile: which toilet, which basin, where the cistern and the pipes go, where the light comes from and how the air gets out.

That is why a cloakroom job of ours starts the way a bathroom does, with a measured survey and a CAD drawing. The finished Nottingham room kept the drawing's layout and changed the tile. What we include, from under-stairs layouts to the waste run, is set out on our cloakrooms and WCs page.

Narrow downstairs WC before the work, with a close coupled toilet, a basin set into a cream panelled cabinet, stripped walls, a window above and a vinyl floor
BeforeNottingham, before. A close coupled toilet and a basin in a cabinet, both standing on the floor.
3D design of the same cloakroom with pale green tiles, a wall hung toilet with a brass flush plate, a wall hung wood vanity with a bowl basin and brass wall tap, and a tall mirror on the side wall
The designThe 3D design drawn in our Arnold showroom. The finished room kept this layout and changed the tile.

Start with the toilet

In a small downstairs toilet, the pan decides more about the room than anything else in it. In both of these rooms the cistern has gone into the wall, behind tiled boxing, so all that is left in the room is the pan and a flush plate above it. The difference is what the pan does with the floor.

Narrow downstairs WC seen from the doorway, with a wall hung toilet and a wall hung vanity in a light wood finish with a bowl basin, grey brown marble effect tiles up to a wide window, two brass wall lights above it, a tall brass framed mirror on the side wall and a wood effect floor
The same room from the door. The toilet and the vanity both hang on the wall, and the tiled boxing stops at the windowsill to make a ledge.

In Nottingham the toilet is wall hung, and so is the vanity beside it. The floor runs clear underneath both to the skirting, which makes a narrow floor look wider and leaves nothing to mop around.

Back to wall toilet against multicoloured terrazzo effect tiles that box in the cistern and finish as a ledge under the window, with a white flush plate, a brushed copper toilet roll holder, a white column radiator and a herringbone wood effect floor
Chilwell. A back to wall toilet, with the cistern hidden in terrazzo effect boxing that doubles as the windowsill.

In Chilwell the pan is back to wall. It stands on the floor, but the cistern is still out of sight, so from the doorway you see one simple shape against the tile.

Where the cistern goes

Wall hung toilet
In the boxing, on a frame that also carries the pan
Back to wall toilet
In the boxing or a unit, with the pan standing in front

The floor

Wall hung toilet
Clear underneath, right back to the wall
Back to wall toilet
The pan sits on it, so there is a base to clean round

Worth knowing

Wall hung toilet
The frame goes in before the wall is closed, so it is decided at the drawing stage
Back to wall toilet
Fixed to the floor, so the wall behind does not carry the pan

Either way, the boxing does a second job. In both rooms it stops at the height of the windowsill, so its top becomes a shelf. In Chilwell it holds a plant and the hand soap, and in Nottingham it is edged in a brass trim that matches the tap. If the room is short from the door to the back wall, a short projection pan sits about a hundred millimetres closer to the wall than a standard one.

A basin for washing hands

A cloakroom basin is mostly used for washing hands, so it can be smaller than the one in a bathroom, and whatever depth it gives up is floor in front of it.

In Nottingham, at the top of this article, a round bowl sits on a two drawer vanity that hangs on the wall. The tap comes out of the wall rather than the worktop, so the top around the bowl stays clear. In Chilwell, further down, the basin sits on fitted pale blue cupboards with a marble effect worktop, and a tall mixer reaches over its rim. Fitted furniture is built to the wall rather than stood against it, which suits a room where a standard unit would leave an awkward gap.

Where the room will not take a vanity at all, the basin can hang on the wall with a semi pedestal covering the waste, which keeps the floor clear in the same way a wall hung toilet does. In a very narrow room, a corner basin is the other answer. Both are among the compact and corner pieces we fit in cloakrooms.

Corner of a grey stone effect room with a wall hung toilet, a white semi pedestal basin hung on the wall with a chrome tap, a white flush plate, and a mirror cabinet with lit edges above a tiled ledge
Not a cloakroom: this is the WC end of a wet room of ours. The same pairing works downstairs, a wall hung toilet and a semi pedestal basin, with a mirror cabinet over the boxing.

Storage that stays off the floor

A downstairs toilet needs very little storage: spare rolls, hand soap, a hand towel and maybe the cleaning things. Decide where those will live before choosing the furniture, because a cabinet added afterwards takes floor the room cannot spare.

  • Drawers under the basin. The Nottingham vanity has two. Drawers hold more than a cupboard the same size and open without a door swinging into the room.
  • Cupboards under a worktop. The Chilwell run puts cupboard doors and a drawer side by side under the basin.
  • The ledge over the cistern. Soap or a plant can live there, within reach of the basin, as they do in Chilwell.
  • A mirror cabinet. It takes whatever would otherwise crowd the ledge, and some have lighting built in, like the one over the wet room basin above.

The furniture and mirror cabinets in our Arnold showroom are there to be opened, so you can try the drawers and hinges before you choose.

Mind the door

In a room this narrow, the door takes floor too. One that opens inwards needs a clear arc of floor and has to be stepped round to close it. One that opens outwards swings into the hall, so it has to clear whatever is there, the foot of the stairs included.

A sliding door avoids both, running along the wall or into a pocket inside it. It does not close against a frame the way a hinged door does, so a little more sound gets through at the edges. We compare the two in our en suite article, and the same trade offs apply downstairs.

Light it like a room, not a cupboard

Before the work, the Nottingham room had one light in the middle of the ceiling. Now it has two downlights, a pair of brass wall lights over the window and a tall mirror on the side wall. Light from two heights stops a small room feeling like a box with a bulb in it.

Wall lights are easy to plan in while the walls are open and much harder to add once they are tiled, so they belong on the drawing rather than on a list for later.

Get the air out

Approved Document F, the government's guidance on ventilation in England, counts any room with a WC in it as a wet room, alongside kitchens and bathrooms. It asks for extract ventilation to the outside, although in a WC an opening window that meets its purge ventilation guidance can do the job instead. Where there is no opening window, a fan that runs only while the room is in use should keep going for at least 15 minutes after you leave.

If you are adding a new downstairs toilet rather than refitting one, it counts as adding a wet room, and the guidance also asks for internal doors to let air through: the equivalent of a 10mm gap under a 760mm wide door.

In practice, that means a fan ducted outside by the shortest route, set high on the wall or in the ceiling, on an overrun so it keeps going after the light goes off.

Make it part of the house

A downstairs toilet opens off the hall, so it is seen with the rest of the ground floor rather than with the bathroom upstairs. Both of these rooms are finished more like a small room in the house than a bathroom shrunk to fit.

  • Tile only where it is needed. In both rooms the tile covers the wall behind the toilet and basin, and the other walls are painted. A painted wall can pick up a colour from the hall in a way a fully tiled room cannot.
  • A warmer floor. Both have a wood effect floor, laid in herringbone in Chilwell.
  • Something carried through from the rest of the house. The Chilwell WC was done in the same job as the family bathroom upstairs. Both rooms use a terrazzo effect tile and brushed copper, but the WC has a brighter terrazzo and pale blue cupboards of its own.
  • Money where it shows. The room takes so little material that a better tap or a bolder tile costs far less here than it would across a whole bathroom.
Bathroom vanity in a wood effect finish with a white basin and brushed copper tap, under a round mirror, with large chip terrazzo effect tiles behind and an open door to the landing
UpstairsChilwell, upstairs. The family bathroom from the same job, in a terrazzo effect tile with bigger chips and a brushed copper tap.
Pale blue fitted vanity cupboards with bronze coloured bar handles under a marble effect worktop, a white countertop basin with a tall brushed copper mixer, multicoloured terrazzo effect tiles behind and a white column radiator to one side
DownstairsChilwell, downstairs. The WC picks up the terrazzo and the copper in brighter colours, with pale blue cupboards of its own.

One customer put the same idea well, writing about a bathroom rather than a cloakroom.

On the design side, Abbie really understood the traditional look we were going for, in keeping with the house, and did a great job sourcing the right tiles.

Benjamin Mitchell · BathroomGoogle review

Doing it with the bathroom

Fitting the downstairs toilet in the same job as a bathroom means the finishes for both are chosen together. That is how the two Chilwell rooms came to share terrazzo and copper without looking the same.

A customer who had a bathroom and a downstairs WC fitted together wrote this in a Google review in September.

We recently had our bathroom and downstairs WC fitted, and we’re delighted with the results. Abbie created a thorough design and offered practical solutions to existing issues, including the exposed pipework.

Lucy O · Bathroom and downstairs WCGoogle review

Both rooms in this article are on our projects pages: the Nottingham cloakroom and the Chilwell bathroom and WC. For more on hanging fittings and planning storage in a tight space, see our small bathroom ideas. To see the basins, furniture and brassware in person, the Arnold showroom has full displays and needs no appointment in opening hours.

Still wondering

Questions we get asked

Ask us yours
Is a wall hung or back to wall toilet better for a downstairs WC?
Both hide the cistern in the wall. A wall hung pan leaves the floor clear underneath, which makes a small room look bigger and is the easiest to clean round. A back to wall pan stands on the floor, which some people prefer, and still keeps the cistern out of sight. Either way, the boxing that hides the cistern can be built to the height of the windowsill and used as a shelf.
Does a downstairs toilet need an extractor fan?
Approved Document F, the government's ventilation guidance for England, asks for extract ventilation to the outside in any room with a WC, although an opening window that meets its purge ventilation guidance can do the job instead. In a room with no opening window, a fan that runs only while the room is in use should keep going for at least 15 minutes after you leave.
Can you put a toilet under the stairs?
Usually. An under-stairs space is awkward, but it is almost always solvable with the right pan and basin. The parts that need thinking about are the waste, because a WC needs a route to the soil pipe with enough fall, and the ventilation, because a room under the stairs may have no window. A survey answers both before anything is committed.
How small can a downstairs toilet be?
There is no single figure we would give, because it depends on the pan, the basin and which way the door opens. A short projection pan, a small basin and a door that does not swing into the room can make a very narrow space work. A survey measures yours, and the drawing shows what it will take.
How much does a downstairs toilet cost?
It is usually the cheapest room in the house to do properly, because it is the smallest. What moves the price most is whether you are refitting an existing WC or making a new one, because a new one needs a waste route, water, electrics and extraction before anything you can see is chosen. We do not quote from a price list. After a survey you get a written quote with the full product list.

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The work behind this article

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Real jobs of the kind this article is about, with the photos and what went into them.

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Give us a ring or send a few photos and the rough dimensions, and we will tell you what the room will take. Free consultation at the Arnold showroom or at your house, and nothing is ordered until you have seen it drawn.

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