- Postcode districts
- BS48
- Nearby
- Portishead, Clevedon and Bishopsworth
- Guide price
- £6,600–£13,250
- Typical time on site
- 6–12 working days
- Water
- Hard across most of Somerset
- Survey
- Free, at your home
What does a loft bathroom cost in Nailsea?
As a guide, budget £6,600 to £13,250 including VAT for a loft bathroom in Nailsea; your written quote will pin it down. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Tiling, lighting, extractor fan
Signature
- Walk-in shower under the ridge
New loft bathroom
- New drainage route and water supply
Guide prices for Nailsea including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Nailsea
We cover every part of Nailsea, including BS48, and nearby Portishead (3.5 miles) and Clevedon (4.3 miles).
Nailsea gets the same process as anywhere else: a free survey at your home and a written, itemised quote. We plan loft bathrooms in Nailsea around the roof line, so the shower sits where you can stand and the eaves become storage. If your Nailsea house has a combi boiler, a loft shower can usually run on mains pressure without a pump.
Most of Somerset has hard water. If your supply in Nailsea is the same, limescale on shower glass and heads is a real issue: easy-clean glass, rub-clean nozzles and a squeegee make a big difference. Hardness varies street by street, so check the figure for your postcode with your water supplier.
What the job includes
- A drainage route from the loft to the soil stack with enough fall, or a pumped waste or macerator where the rules allow it
- A shower pump on a gravity system, an electric shower, or advice on moving to mains pressure, depending on your system
- A check of the floor joists where a bath or large shower tray will sit
- Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
Decisions to make first
Bath or no bath
A bath under the slope makes good use of low space, but the floor has to carry it when it is full of water and someone is in it.
Roof window
A roof window over the bath or shower brings daylight and fresh air, but plan the blind for privacy and expect condensation on cold glass.
Rules that apply in England
In England, new drainage and a new connection to the soil stack fall under Part H, a new bathroom needs extract of 15 litres per second intermittent or 8 litres per second continuous under Approved Document F, and new circuits are notifiable under Part P. If the work includes an unvented hot-water cylinder, it must be fitted by a G3-qualified installer.

