What does a bathroom renovation cost in Cornwall?
Our guide range in Cornwall is £7,600–£15,250 including VAT.
Refresh
- Make good and decorate
Full renovation
- Back to brick or studwork
Structural
- New drainage route
Guide prices for Cornwall including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Cornwall?
Water across much of Cornwall is 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 your Redruth home is older and the bathroom still has original pipework or plaster behind the tiles, the survey shows whether a renovation or a refit makes more sense.
What the job includes
- New hot and cold pipework and wastes, with isolation valves to each fitting
- A survey of the structure and services: joists, walls, ceilings, pipework, wastes, wiring and ventilation
- Re-plastering or boarding, with cement-based boards and tanking in the wet areas
- Tiling, fitting of the suite and furniture, making good and decorating, then handover
- Layout changes such as moved doors, new stud walls or boxing for concealed cisterns
- New wiring, lighting, extractor fan and RCD protection, installed and certified by a qualified electrician
Decisions to make first
Shower floor
With the floor already up, a renovation is the easiest time to form a level shower floor or a full wet room.
Pipe material
Copper suits exposed runs and the area near the boiler. Plastic pipe is quicker under floors and inside walls, and long runs need fewer joints.
Combining rooms
Taking out the wall between a bathroom and a separate WC gives one larger room, but it is structural work and may need building control.
How far back to strip
Back to brick gives a clean start. Keeping sound plaster on some walls saves time and money, and the survey shows which walls can stay.
Rules that apply in England
Renovating a bathroom inside an existing home does not need planning permission. Listed buildings need listed building consent for alterations that affect their character, which can include internal work and new soil or vent pipes through walls. In a flat, check the lease: freeholder consent is often needed for wet rooms, moving the WC or new extract vents, and sound insulation and leak risk to the flat below matter. Electrical work must meet BS 7671, with 30 mA RCD protection on every bathroom circuit.
In England, structural changes, new drainage or a new connection to the soil stack under Part H, and new circuits under Part P can all be building regulations work. A registered electrician can self-certify the electrics; structural and drainage work may need a building notice or a full plans application to building control.

