En-suites in Isleworth

Postcode districts: TW3, TW5, TW7
Nearby: Hounslow, Heston and Southall
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 Isleworth?

As a guide, budget £5,600 to £11,250 including VAT for an en-suite in Isleworth; your written quote will pin it down. 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

£5,000–£8,800

Shower, basin and WC replaced

Typical

Upgrade

£7,500–£12,000

Full-height porcelain tiling

New en-suite

£8,800–£17,500

Formed inside an existing bedroom

Guide prices for Isleworth including VAT. Your itemised written quote after the free survey is the price that counts.

Working in Isleworth

We work right across Isleworth — TW3, TW5 and TW7 — and in neighbouring Hounslow and Heston.

London homes in Isleworth often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. If your Isleworth en-suite fan just blows into the loft, we can duct it properly to outside as part of the refit. If your Isleworth home has one bathroom and a good-sized main bedroom, an en-suite is often the change that eases the morning queue.

Supplies across most of Greater London are very hard. If your supply in Isleworth 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 shower tray or level-access former, an enclosure or walk-in panel, and a thermostatic valve
A survey that traces the route from the en-suite to the soil stack and checks the fall the waste pipes would need
Tiling, silicone, testing and making good on the bedroom side of any new walls
Stud walls with acoustic insulation and moisture-resistant board for a new en-suite

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.

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.

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.

More about en-suites

En-suites in Isleworth: questions

What is the price of an en-suite in Isleworth?

An en-suite in Isleworth usually costs £5,600–£11,250 including VAT. The final figure comes down to what you choose and what we find at the survey; your written quote lists every item so you can see where the money goes.

Who handles building control for an en-suite in Isleworth?

Building control for Isleworth is handled by the local council or an approved inspector. If your job needs sign-off — for example a new circuit, new drainage or a new extractor where there was none — we tell you at the survey and handle the notification as part of the work.

How long does an en-suite take?

Allow 4–8 working days on site for most jobs, plus the lead time for products after you approve the quote. We give you a day-by-day plan before work starts in Isleworth.

Is the home survey in Isleworth really free?

Yes. We visit, measure the room, check the pipework, drainage and electrics, and talk through what you want. You then get a written, itemised quote with no obligation to go ahead.

What extractor fan does an en-suite need?

In England, a new en-suite needs extract ventilation of at least 15 litres per second if the fan runs intermittently, or 8 litres per second if it runs continuously. Duct it to outside, keep the duct run short, and choose a quiet fan with an overrun timer, because it sits next to a bedroom.