What does a new bathroom design cost in Renfrewshire and Inverclyde?
Design has no separate fee on a supply-and-fit job. A complete fitted bathroom in Renfrewshire and Inverclyde typically costs £6,200–£11,500 including VAT. Prices in Renfrewshire and Inverclyde run at about 4% below the UK guide, based on Scotland labour rates.
Survey and layout
- Layout options on paper
Detailed design
- Lighting and electrical plan
Full project
- Design, supply and fit
Guide prices for Renfrewshire & Inverclyde including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Renfrewshire and Inverclyde?
Supplies across most of Renfrewshire and Inverclyde are soft. That leaves you free to choose matt black, brushed brass or clear glass without worrying much about limescale. Hardness varies street by street, so check the figure for your postcode with your water supplier. If you are in Paisley and weighing a bath against a walk-in shower, the layout options show both with their prices.
What the job includes
- A lighting and electrical plan showing switches, fittings, shaver socket and extractor fan
- Layout options drawn to scale, showing the bath or shower, WC, basin, storage and towel rail
- A written, itemised quote, with the price fixed in writing once the layout and products are agreed
- Checks on the soil stack, waste routes, joist direction, water pressure, hot water system and existing electrics
- Elevations and tile layouts on a design, supply and fit project, so the setting-out is agreed before tiling starts
- A product list covering the suite, brassware, furniture, tiles, lighting and ventilation
Decisions to make first
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.
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.
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.
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.
Rules that apply in Scotland
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 title deeds often require the other owners' agreement for moving the WC or adding a new vent.
In Scotland, a straight refit rarely needs a building warrant, but forming a new bathroom, altering drainage or structural work may. The Technical Handbook uses 15 l/s extract for a bathroom, and the Scottish Water Byelaws 2014 cover new water fittings.

