What does a new bathroom design cost in Dorset?
Design has no separate fee on a supply-and-fit job. A complete fitted bathroom in Dorset typically costs £6,600–£12,250 including VAT.
Survey and layout
- Measured survey at home
Detailed design
- Product schedule
Full project
- Typical supply-and-fit total
Guide prices for Dorset including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Dorset?
Supplies across most of Dorset are hard. We plan easy-clean glass, rimless toilets and finishes that do not show limescale. Hardness varies street by street, so check the figure for your postcode with your water supplier. We measure Bournemouth bathrooms on site before drawing anything, so layouts are based on your walls rather than a standard plan.
What the job includes
- Layout options drawn to scale, showing the bath or shower, WC, basin, storage and towel rail
- 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
- Checks on the soil stack, waste routes, joist direction, water pressure, hot water system and existing electrics
- A product list covering the suite, brassware, furniture, tiles, lighting and ventilation
- A conversation about who uses the room, when, and what does not work about the current one
Decisions to make first
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.
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.
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.
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.
Rules that apply in England
Changing the layout inside an existing bathroom does not need planning permission. The design does have to respect the electrical zones around the bath and shower under BS 7671, the water fittings rules for new WCs and taps, including a maximum 6-litre flush, and adequate extract ventilation. Listed buildings need listed building consent for alterations affecting their character, including new soil or vent pipes through walls, and in a flat the lease often requires freeholder consent for moving the WC or adding a new vent.
In England, a new connection to the soil stack or new drainage can be building regulations work under Part H, and new circuits or alterations to circuits in the bathroom are notifiable under Part P. Where a new bathroom is formed, Approved Document F asks for extract at 15 l/s intermittent or 8 l/s continuous.

