- Postcode districts
- AL7, AL8
- Nearby
- Hatfield, Hertford and St Albans
- Guide price
- £6,900–£13,750
- Typical time on site
- 6–12 working days
- Water
- Very hard across most of Hertfordshire
- Survey
- Free, at your home
What does a loft bathroom cost in Welwyn Garden City?
For Welwyn Garden City, our guide range for a loft bathroom is £6,900 to £13,750 including VAT. Labour costs in East of England put local prices at about 6% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Existing loft shower room
Signature
- Fitted furniture to the eaves
New loft bathroom
- Ventilation and electrics to regulations
Guide prices for Welwyn Garden City including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Welwyn Garden City
In Welwyn Garden City we cover AL7 and AL8; we also cover Hatfield, 2.8 miles away, and Hertford.
In Welwyn Garden City, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. We plan loft bathrooms in Welwyn Garden City around the roof line, so the shower sits where you can stand and the eaves become storage. If your Welwyn Garden City loft shower is weak or the waste drains slowly, the fix is often in the pump or the pipe fall rather than the shower itself.
Water across much of Hertfordshire is very hard. If your supply in Welwyn Garden City 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
- An extractor fan ducted through the roof or a gable wall, with the duct insulated through cold spaces
- A shower pump on a gravity system, an electric shower, or advice on moving to mains pressure, depending on your system
- A check of your hot-water system and of the pressure and flow you actually get at loft level
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.
Eaves storage
Low cupboards built into the slope behind the WC or basin take clutter out of the room and hide the pipework.
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.

