Whether you're starting from scratch or rethinking what you already have, getting your bathroom layout right is the most important decision you'll make in the whole renovation. Before you choose tiles, taps or a vanity unit, the position of your fixtures determines how the room functions every single day. This guide covers bathroom layout ideas for different room types, with practical step-by-step instructions on how to design a bathroom layout that works for your space.
10 bathroom layout ideas for every room type
1. The single-wall layout
Everything, including your bath, toilet and basin, runs along one wall. It's the most straightforward bathroom layout design and suits narrow or compact rooms where plumbing can be kept to a single run. Fitting all three on one wall reduces pipework, which can lower installation costs. The trade-off is that it can feel tight if the room is very narrow. This design works best in bathrooms roughly 1.5m wide and at least 2.5m long, where there's enough floor space to stand and move freely.
2. The wet room layout
The shower is open plan, with no tray or enclosure, and the entire floor is waterproofed and drained. A wet room bathroom layout works well in both small and large rooms. In a tight space, removing the enclosure frees up valuable floor area. In a larger room, it creates a genuinely open feel. However, sloped floors and adequate drainage are non-negotiable. Wall type matters too. This bathroom layout requires solid masonry or properly tanked stud walls. Explore our range of walk-in showers or read our walk-in shower ideas guide for more inspiration.
3. The small bathroom layout with a separate shower and bath
Fitting both a bath and a shower into a compact room is one of the most common challenges in UK homes. The key is choosing the right fixtures. A shower bath with a fitted bath-shower screen can replace a standalone shower enclosure entirely, saving significant floor space. Alternatively, placing a small bath along one wall and a compact quadrant shower enclosure in the corner opposite can work well in rooms from around 4m². Read our guide to designing a small bathroom with a shower and bath for more ideas.
4. The long, narrow bathroom layout
A long, narrow bathroom layout typically means a room that's around 1.6–2m wide and 3m or more in length. The most effective approach is to place the bath at the far end, on the short wall, the basin in the middle and the toilet nearest the door. This creates a natural flow without the room feeling like a corridor. Wall-hung fittings help here. A wall-hung basin and wall-hung toilet keep the floor clear, which makes a narrow room feel noticeably wider.
5. The L-shaped bathroom layout
An L-shaped bathroom layout uses two perpendicular walls to separate wet and dry zones. The shower or bath sits in the longer arm; the toilet and basin occupy the shorter return. This works particularly well in rooms that have an awkward corner or recess. It's also a practical way to create a degree of privacy between the toilet and the rest of the room without adding a partition wall. An L-shaped bathroom suite can simplify the planning process if you're starting fresh.
6. The rectangular bathroom layout
A rectangular bathroom layout is the most common room shape in UK homes and gives you the most options. The two most practical approaches are: a bath on the long wall, with the toilet and basin facing each other on the short walls; or a bath on the short end wall, with the toilet and basin lined up along the length. The second arrangement tends to feel more open. In a generous rectangular room, there's space for a separate walk-in shower alongside the bath. This is the bathroom layout with a bath and shower setup that most homeowners opt for.
7. The ensuite floor plan
Space is almost always the constraint with an ensuite. Most ensuite floor plans work within 2–4m², which usually means choosing two or three fixtures rather than all four. A toilet, basin and shower are the typical combination. Compact wall-hung toilets and corner basins free up floor space considerably. A bifold shower door folds flat against the frame rather than swinging into the room, which matters in a tight space. Find more ideas in our guide to ensuite bathrooms.
8. The master bathroom layout
A master bathroom layout typically has the luxury of more floor space, often 6m² or more. That opens up options: a freestanding bath as a centrepiece, a separate double-width walk-in shower, a double sink vanity unit, or all three. Zone the room deliberately. Place the bath where it'll be seen first when you walk in. Position the shower where it's private but easy to access. Keep the toilet in a corner or partially screened if the room allows. Good storage matters too, making sure the room doesn’t look cluttered or cramped. Read our bathroom storage guide for more guidance on making the most of your space.
9. The square bathroom layout
A square room is one of the more flexible bathroom layout shapes, but it can be wasted if fixtures are simply lined up along one wall. The better approach is to use opposing walls. Place the bath or shower on one wall, and the toilet and basin on the wall directly facing it. This opens up the centre of the room and creates a clear route through. In a larger square room, a freestanding bath positioned away from the wall entirely becomes a practical option, not just an aesthetic one. Square rooms also suit a symmetrical bathroom layout design particularly well, where paired wall-hung basins or matching storage units sit on either side of a central mirror.
10. The cloakroom layout
A cloakroom is often a very small room measuring around 1.2m x 1.6m or thereabouts, and typically contains only a toilet and basin. Every centimetre counts. A cloakroom suite is the most efficient purchase, as the toilet and basin are sized and designed to work together in a compact footprint. Placing the basin on the wall adjacent to the toilet, rather than opposite it, leaves more clear floor space to stand. Wall-hung options are particularly effective here, too.
How to design a bathroom layout
Good bathroom layout design doesn't start with choosing products. It starts with understanding what you're working with. Follow these six steps, and you'll avoid the expensive mistakes that come from guessing.
1. Measure your space
Get the exact dimensions of the room in millimetres, not centimetres or approximate feet. Measure the width and length at floor level, and note the position of every door, window, and radiator. Measure door swing too, so you know how much clear space you need at the entrance. These numbers are the foundation of your bathroom floor plan. If they're wrong, everything built on them is wrong. Take measurements at least twice.
2. Find out where your soil pipe and drains are
This is the step most people skip, and it's the one that causes the most problems later. Your soil pipe (the large pipe that carries waste from the toilet) is fixed, and moving it is expensive. Your existing drain positions also affect where the bath and shower can go without major groundwork. The toilet must be within a certain distance of the soil pipe, typically no more than 6 metres for a standard gravity-fed system. Knowing where these are before you draw up bathroom layout plans saves you from designing something you can't actually build.
3. Check what types of walls and floors you have
Wall type affects what you can fix to them and how they need to be waterproofed. Solid masonry walls take most fixings without issue. Timber stud walls need noggins in the right places for wall-hung basins and toilets. Without them, the fixings won't hold the load.
Solid concrete floors don't allow for under-floor drainage changes without significant work. Suspended timber floors do, but they need to be assessed for condition and load-bearing capacity. Make sure you know what you have before finalising your bathroom layout design.
4. Decide what fixtures you want
Once you know the constraints of the room, decide what fixtures you need and which you'd like but could drop if space doesn't allow. Start with the non-negotiables (usually toilet and basin), then work through baths, shower enclosures, and vanity units in order of priority. For a full overview of what to think about when choosing a bathroom suite, our buying guide covers it in detail. Having a clear priority order means that when space is tight, you know what to compromise on first.
5. Find out the dimensions of each fixture
Every fixture you're considering has specific dimensions, and those dimensions need to fit your room with clearance space around them. Building regulations recommend at least 600mm clear space in front of a toilet and 1000mm clearance for a shower door to open fully. Standard baths are 1700mm x 700mm, but small baths start from 1300mm x 700mm, and shower enclosures range from 700mm x 700mm upwards. Don't assume. Check the exact product dimensions against your room measurements before committing.
6. Draw out a plan
Once you know how big your room is, what will fit and where they need to go in line with your existing plumbing, draw out a plan. You don't need professional software. Graph paper works. Or use a free online bathroom floor plan tool. Draw the room to scale (1:20 is straightforward: 1mm on paper equals 20mm in real life). Mark the door, windows, soil pipe and existing drain positions. Then place your fixtures to scale and check that clearances work. A drawn bathroom layout plan will show you problems that aren't obvious in your head. Walk through the space on paper; can you open the shower door without hitting the basin? Does the toilet door clear the bath? Small issues on paper are easy to fix. The same issues discovered mid-installation are not.
Getting your bathroom layout right at the planning stage can make all the difference between a space that works effortlessly and one that feels frustrating day to day. Take your time with the planning steps above, and if you need further help or have questions about our bathroom fixture measurements, get in touch with our customer care team or visit us in person at our Birmingham showroom.