- Postcode districts
- BT51, BT52, BT55
- Nearby
- Limavady, Magherafelt and Derry
- Guide price
- £5,700–£11,500
- Typical time on site
- 6–12 working days
- Water
- Soft across most of County Londonderry
- Survey
- Free, at your home
What does a loft bathroom cost in Coleraine?
As a guide, budget £5,700 to £11,500 including VAT for a loft bathroom in Coleraine; your written quote will pin it down. Labour costs in Northern Ireland put local prices at about 12% below 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 Coleraine including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Coleraine
We work right across Coleraine — BT51, BT52 and BT55 — and in neighbouring Limavady and Magherafelt.
Homes in and around Coleraine vary, so we look at the floor, the walls and the water system before we price anything. If your Coleraine 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 Coleraine house has a combi boiler, a loft shower can usually run on mains pressure without a pump.
Most of County Londonderry is supplied with soft water. If that holds for your street in Coleraine, limescale on shower glass and heads builds up slowly and a squeegee after use is usually enough. 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 check of your hot-water system and of the pressure and flow you actually get at loft level
- 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 survey of the headroom across the room, with the usable height marked at each fitting position
Decisions to make first
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.
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 Northern Ireland
In Northern Ireland, building control covers the new drainage, any structural work to the floor and the ventilation, which is set out in Technical Booklet K. Wiring should be designed, tested and certified to BS 7671.

