Loft bathrooms in Chiswick

Postcode districts: W3, W4, W6
Nearby: Acton, Shepherds Bush and Fulham
Guide price: £8,100–£16,250
Typical time on site: 6–12 working days
Water: Very hard across most of Greater London
Survey: Free, at your home

What does a loft bathroom cost in Chiswick?

For Chiswick, our guide range for a loft bathroom is £8,100 to £16,250 including VAT. Prices in London run at about 25% above the national guide, mainly because of labour rates. The figure depends on the size of the room, whether anything moves, and the products you pick.

Refit

£6,900–£10,500

Tiling, lighting, extractor fan

Typical

Signature

£10,000–£16,250

Walk-in shower under the ridge

New loft bathroom

£12,500–£22,500

New drainage route and water supply

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

Working in Chiswick

As well as Chiswick itself (W3, W4 and W6), we survey in Acton, Shepherds Bush and Fulham.

In Chiswick, many bathrooms are in flats or converted houses, so we check lease consents, access and the floor below before we price. If your Chiswick loft shower is weak or the waste drains slowly, the fix is often in the pump or the pipe fall rather than the shower itself. For a loft bathroom in a tank-fed Chiswick home, we work out how the shower will get its pressure before choosing a single fitting.

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

Fitted furniture made to the eaves, so the low space behind the slope becomes storage
An extractor fan ducted through the roof or a gable wall, with the duct insulated through cold spaces
Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
A check of the floor joists where a bath or large shower tray will sit

Decisions to make first

Bath or no bath

A bath under the slope makes good use of low space, but the floor has to carry it when it is full of water and someone is in it.

Eaves storage

Low cupboards built into the slope behind the WC or basin take clutter out of the room and hide the pipework.

Rules that apply in England

In England, new drainage and a new connection to the soil stack fall under Part H, a new bathroom needs extract of 15 litres per second intermittent or 8 litres per second continuous under Approved Document F, and new circuits are notifiable under Part P. If the work includes an unvented hot-water cylinder, it must be fitted by a G3-qualified installer.

More about loft bathrooms

Loft bathrooms in Chiswick: questions

What is the price of a loft bathroom in Chiswick?

A loft bathroom in Chiswick usually costs £8,100–£16,250 including VAT. Where you land in that range depends on the size of the room, whether the layout changes and the products you choose. After the free survey you get an itemised written quote, and the price is fixed in writing once the layout and products are agreed.

Who handles building control for a loft bathroom in Chiswick?

Building control for Chiswick 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 a loft bathroom take?

Allow 6–12 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 Chiswick.

Is the home survey in Chiswick 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.

Do I need a pump for a loft shower?

You need a pump if your hot water comes from a cylinder fed by a cold tank, because the tank usually sits at or below the height of a loft shower and gives almost no pressure. A combi boiler or unvented cylinder supplies mains pressure, so no pump is needed, though the flow can drop when other taps run. Shower pumps must only be used on gravity systems, never connected to the mains.