- Postcode districts
- TW3, TW4, TW5, TW7, TW8, TW13 + 2 more
- Nearby
- Isleworth, Heston and Feltham
- 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 Hounslow?
In Hounslow, an en-suite typically costs £5,600–£11,250 including VAT, based on London prices. 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 Hounslow including VAT. Your itemised written quote after the free survey is the price that counts.
Working in Hounslow
We cover every part of Hounslow, including TW3, TW4, TW5 and 5 more postcode districts, and nearby Isleworth (0.9 miles) and Heston (1.2 miles).
In Hounslow, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. If you live in a Hounslow flat, check the lease before planning a new en-suite, as freeholder consent is often needed for new drainage and vents. We quote new en-suites in Hounslow only after checking the drainage route on site, so the price reflects the work your house actually needs.
Most of Greater London has very hard water. If your supply in Hounslow 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
- IP-rated lighting, a shaver socket and the electrics done by a qualified electrician, tested and certified
- A door that suits a tight space: inward, outward, sliding or a pocket door
- A pumped waste or macerator where gravity drainage is not possible, and only where the house already has a WC on gravity drainage
- A shower tray or level-access former, an enclosure or walk-in panel, and a thermostatic valve
Decisions to make first
Exposed or concealed valve
An exposed bar valve is quicker to fit and easy to service. A concealed valve looks cleaner but sits inside the wall, so plan how it will be reached for repairs.
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.
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.

