- Postcode districts
- BT5, BT6, BT7
- Nearby
- Belfast, Newtownabbey and Lisburn
- Guide price
- £5,700–£11,500
- Typical time on site
- 6–12 working days
- Water
- Soft across most of County Antrim
- Survey
- Free, at your home
What does a loft bathroom cost in Castlereagh?
Our guide price for a loft bathroom in Castlereagh is £5,700–£11,500 including VAT. 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
- Shower, basin and WC replaced
Signature
- Pump or macerator where needed
New loft bathroom
- Formed in an existing loft room
Guide prices for Castlereagh including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Castlereagh
In Castlereagh we cover BT5, BT6 and BT7; we also cover Belfast, 2.3 miles away, and Newtownabbey.
In Castlereagh, as anywhere, the age of the house decides a lot: pipe sizes, floor construction and where the soil stack runs. For a loft bathroom in a tank-fed Castlereagh home, we work out how the shower will get its pressure before choosing a single fitting. We plan loft bathrooms in Castlereagh around the roof line, so the shower sits where you can stand and the eaves become storage.
Supplies across most of County Antrim are soft. If that holds for your street in Castlereagh, 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 survey of the headroom across the room, with the usable height marked at each fitting position
- 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 drainage route from the loft to the soil stack with enough fall, or a pumped waste or macerator where the rules allow it
Decisions to make first
Eaves storage
Low cupboards built into the slope behind the WC or basin take clutter out of the room and hide the pipework.
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.
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.

