What does a cloakroom or downstairs WC cost in South Glamorgan?
Our guide range in South Glamorgan is £1,650–£4,200 including VAT. Prices in South Glamorgan run at about 7% below the UK guide, based on Wales labour rates.
Refit
- Existing downstairs WC
Upgrade
- Vanity basin with storage
New cloakroom
- Extractor fan to regulations
Guide prices for South Glamorgan including VAT. Your itemised written quote after the free survey is the price that counts.
Which towns do we cover in South Glamorgan?
Water across much of South Glamorgan is moderately hard. Taps and wastes will need an occasional descale, and chrome or brushed finishes are easier to keep clean than polished brass. Hardness varies street by street, so check the figure for your postcode with your water supplier. For a new cloakroom in Cardiff, the first thing we look at is where the nearest drain or soil stack runs.
What the job includes
- Compact sanitaryware: a short-projection, back-to-wall or wall-hung WC and a corner, wall-hung or slim vanity basin
- An extractor fan ducted to outside, wired with an overrun timer or linked to the light
- Splashback or feature tiling and a new floor, often LVT or porcelain
- A survey that checks the headroom under the stairs, the door swing and how the waste will reach the drain
- A new waste connection to the soil stack or drain, or a macerator where the rules allow it
- A concealed cistern frame or WC unit where the space allows
Decisions to make first
Under-stair layout
Headroom drops quickly under stairs. The basin and the space in front of the WC need standing height; the low end of the room can take the cistern or storage.
Finishes
A small room can carry a bolder tile or wallpaper. A feature wall behind the WC costs far less here than in a full bathroom because there is so little of it.
Basin
A corner basin fits the tightest rooms. A slim vanity basin with a cupboard underneath gives somewhere to keep spare toilet rolls and soap, and hides the trap.
Macerator or gravity
Gravity drainage is silent and needs no maintenance. A macerator lets a WC go where a pipe could not otherwise fall, provided another WC in the house is on gravity drainage.
Rules that apply in Wales
A cloakroom refit does not need planning permission, and forming a new one inside the house rarely does, although a listed building needs listed building consent for internal alterations affecting its character. A macerator or pumped WC is acceptable only where the home also has a WC on gravity drainage. The water fittings rules in each nation limit a new WC to a 6-litre flush.
In Wales, Part H covers a new drainage connection and the Welsh Part F covers ventilation, with rates similar to England. The Welsh Part P has a wider notifiable list, so check with your electrician whether the cloakroom lighting and fan need to be notified.

