- Postcode districts
- TW20
- Nearby
- Staines, Chertsey and Ashford
- Guide price
- £7,300–£14,500
- Typical time on site
- 6–12 working days
- Water
- Hard across most of Surrey
- Survey
- Free, at your home
What does a loft bathroom cost in Egham?
Guide price in Egham: £7,300–£14,500 including VAT, depending on the room and what you choose. Prices in South East England run at about 12% above the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Shower, basin and WC replaced
Signature
- Pump or macerator where needed
New loft bathroom
- Formed in an existing loft room
Guide prices for Egham including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Egham
We work right across Egham — TW20 — and in neighbouring Staines and Chertsey.
In Egham, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. If your Egham loft conversion has a bedroom but no bathroom, the survey starts with where the soil stack runs and how much headroom you have. If your Egham house has a combi boiler, a loft shower can usually run on mains pressure without a pump.
Supplies across most of Surrey are hard. If your supply in Egham 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 check of the floor joists where a bath or large shower tray will sit
- A survey of the headroom across the room, with the usable height marked at each fitting position
- Fitted furniture made to the eaves, so the low space behind the slope becomes storage
- Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
Decisions to make first
Gravity or pumped waste
Gravity is silent and maintenance-free. A pumped waste or macerator lets fittings sit away from the stack, provided the house has a WC on gravity drainage elsewhere.
Getting the water pressure
A pumped shower suits a gravity system with a cold tank; an electric shower heats cold mains water at the point of use; a combi or unvented cylinder gives mains pressure throughout.
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.

