What does a loft bathroom cost in Dyfed?
Our guide range in Dyfed is £6,000–£12,000 including VAT. Prices in Dyfed run at about 7% below the UK guide, based on Wales labour rates.
Refit
- Tiling, lighting, extractor fan
Signature
- Walk-in shower under the ridge
New loft bathroom
- New drainage route and water supply
Guide prices for Dyfed including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in Dyfed?
Water across much of Dyfed is soft. If that holds for your street in Llanelli, 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. If your Llanelli house has a combi boiler, a loft shower can usually run on mains pressure without a pump.
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
- Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
- Fitted furniture made to the eaves, so the low space behind the slope becomes storage
- An extractor fan ducted through the roof or a gable wall, with the duct insulated through cold spaces
- A check of your hot-water system and of the pressure and flow you actually get at loft level
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.
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.
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.
Where the shower goes
Under the ridge or in a dormer, where the full height is. A walk-in shower with a single panel is usually easier to fit to a roof line than a framed enclosure.
Rules that apply in Wales
A bathroom inside an existing loft room does not usually need planning permission, but forming one is normally building-regulations work because of the new drainage, extract ventilation and electrics. A macerator or pumped WC is acceptable only where the home also has a WC on gravity drainage. Under the water fittings rules, a shower pump must never be connected directly to the mains supply.
Wales applies its own Part P, with a wider notifiable list than England, and its own Part F with similar extract rates. Part H covers the new drainage route down from the loft.

