- Postcode districts
- SM1, SM5, SM6
- Nearby
- Sutton, Mitcham and Morden
- Guide price
- £5,600–£11,250
- Typical time on site
- 4–8 working days
- Water
- Very hard across most of Greater London
- Survey
- Free, at your home
What does an en-suite cost in Carshalton?
In Carshalton, an en-suite typically costs £5,600–£11,250 including VAT, based on London prices. Labour costs in London put local prices at about 25% above the UK guide figure. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Existing en-suite, same layout
Upgrade
- Fitted furniture with storage
New en-suite
- Ventilation and electrics to regulations
Guide prices for Carshalton including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Carshalton
As well as Carshalton itself (SM1, SM5 and SM6), we survey in Sutton, Mitcham and Morden.
London homes in Carshalton often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. If the en-suite in your Carshalton home was squeezed in by a previous owner, a refit is a chance to fix the door swing and the tray size. If your Carshalton en-suite fan just blows into the loft, we can duct it properly to outside as part of the refit.
Water across much of Greater London is very hard. If your supply in Carshalton 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 pumped waste or macerator where gravity drainage is not possible, and only where the house already has a WC on gravity drainage
- A short-projection or wall-hung WC and a compact basin chosen to keep the floor clear
- Tiling, silicone, testing and making good on the bedroom side of any new walls
- A door that suits a tight space: inward, outward, sliding or a pocket door
Decisions to make first
Noise
Acoustic insulation in the stud walls and a quiet fan make a real difference when one of you showers early while the other is still asleep.
Door type
An outward-opening door frees floor space inside. A sliding pocket door saves space on both sides but needs a stud wall long enough to take the cassette.
Rules that apply in England
In England, a new en-suite brings in Part H for the new connection to the soil stack, Approved Document F for ventilation, at 15 litres per second intermittent or 8 litres per second continuous extract, and Part P for the new circuits. The electrician should be registered with a competent person scheme, or the work notified to building control. On a refit, avoid replacing the fan with a less effective one.

