The layout decides most of what a bathroom costs and how well it works. Where the soil stack sits, which way the joists run, what kind of hot water system you have and whether there is an outside wall to vent through all limit what is possible. A good design works within those limits first, then makes the most of the space: a door that clears the WC, a shower big enough to stand in, storage where you actually reach for things.
Our design work starts with a measured survey in your home. You get layout options drawn to your room and a written, itemised quote; the survey and quote are free, and the layout comes with the quote. Elevations, tile setting-out and a lighting plan are worked up as part of a design, supply and fit project, which for a typical bathroom comes to £6,500 to £12,000 including VAT.
What does a new bathroom design with us include?
- A measured survey of the room, including ceiling heights, slopes, window and door positions and any boxing
- Checks on the soil stack, waste routes, joist direction, water pressure, hot water system and existing electrics
- A conversation about who uses the room, when, and what does not work about the current one
- Layout options drawn to scale, showing the bath or shower, WC, basin, storage and towel rail
- A clear view of which changes are cheap and which mean moving drainage or opening floors
- A product list covering the suite, brassware, furniture, tiles, lighting and ventilation
- Elevations and tile layouts on a design, supply and fit project, so the setting-out is agreed before tiling starts
- A lighting and electrical plan showing switches, fittings, shaver socket and extractor fan
- A written, itemised quote, with the price fixed in writing once the layout and products are agreed
How much does a new bathroom design cost?
Design has no separate fee on a supply-and-fit job: the home survey, layout options and itemised written quote are free, and a complete designed, supplied and fitted bathroom typically costs £6,500–£12,000 including VAT.
Survey and layout
- Measured survey at home
- Layout options on paper
- Written, itemised quote
Detailed design
- Elevations and tile layouts
- Product schedule
- Lighting and electrical plan
Full project
- Design, supply and fit
- One contract and one team
- Typical supply-and-fit total
National guide prices including VAT, reviewed October 2026. London is typically about 25% higher and the North East, Wales and Northern Ireland around 7–12% lower. Your written quote after the survey is the price that counts.
What do you need to decide?
Keep or change the layout
Keeping the WC and shower where they are saves on plumbing. The WC is the costly one to move, because it is tied to the soil stack.
Where the shower goes
A shower on an outside wall is easier to ventilate; one under a sloping ceiling needs full head height where you stand, not just at the high side.
Storage
Fitted furniture, a vanity with a tall cupboard, or recessed niches and a mirror cabinet. Recessed storage costs no floor space but needs a stud wall or deep boxing to sit in.
The door
Re-hanging the door on the other side, fitting a sliding pocket door or moving the opening can free up a whole wall in a small room.
Tile setting-out
Centring tiles on the window, basin or niche avoids thin slivers at the edges. Large tiles mean fewer joints but need flatter walls.
Planning for later
Timber noggins in the walls for future grab rails, a wider door or a level shower floor cost far less to build in now than to add later.
