- Postcode districts
- W3, W4, W6
- Nearby
- Acton, Shepherds Bush and Fulham
- 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 Chiswick?
Our guide price for an en-suite in Chiswick is £5,600–£11,250 including VAT. We adjust the national guide for London, where prices are typically about 25% above the UK average. The figure depends on the size of the room, whether anything moves, and the products you pick.
Refit
- Shower, basin and WC replaced
Upgrade
- Full-height porcelain tiling
New en-suite
- Formed inside an existing bedroom
Guide prices for Chiswick including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Chiswick
We cover every part of Chiswick, including W3, W4 and W6, and nearby Acton (1.4 miles) and Shepherds Bush (1.8 miles).
London homes in Chiswick often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. If the en-suite in your Chiswick home was squeezed in by a previous owner, a refit is a chance to fix the door swing and the tray size. If you live in a Chiswick flat, check the lease before planning a new en-suite, as freeholder consent is often needed for new drainage and vents.
Most of Greater London has very hard water. If your supply in Chiswick 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 short-projection or wall-hung WC and a compact basin chosen to keep the floor clear
- Stud walls with acoustic insulation and moisture-resistant board for a new en-suite
- A door that suits a tight space: inward, outward, sliding or a pocket door
- An extractor fan ducted to outside, sized to the room and wired with an overrun timer or humidistat
Decisions to make first
Shower size
A 900 mm square tray is a comfortable minimum for an enclosure. In a long, narrow room, a 1200 by 800 mm walk-in tray with one glass panel feels far more generous.
Refit or new en-suite
A refit keeps the existing drainage and walls. A new en-suite costs more because the walls, waste route, fan duct and electrics all start from nothing.
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.

