Loft bathrooms in Harrow

Postcode districts: HA1, HA2, HA3, HA5, HA7
Nearby: Brent, Wembley and Northolt
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 Harrow?

Our guide price for a loft bathroom in Harrow is £8,100–£16,250 including VAT. 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

£6,900–£10,500

Shower, basin and WC replaced

Typical

Signature

£10,000–£16,250

Pump or macerator where needed

New loft bathroom

£12,500–£22,500

Formed in an existing loft room

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

Working in Harrow

We cover every part of Harrow, including HA1, HA2, HA3 and 2 more postcode districts, and nearby Brent (2.2 miles) and Wembley (2.3 miles).

London homes in Harrow often mean stairs, permits and neighbours below; we plan the logistics as carefully as the bathroom. If your Harrow house has a combi boiler, a loft shower can usually run on mains pressure without a pump. If your Harrow 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.

Supplies across most of Greater London are very hard. If your supply in Harrow 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
A check of the floor joists where a bath or large shower tray will sit
Electrics by a qualified electrician, tested and certified, then tiling, testing and handover
A check of your hot-water system and of the pressure and flow you actually get at loft level

Decisions to make first

Getting the water pressure

A pumped shower suits a gravity system with a cold tank; an electric shower heats cold mains water at the point of use; a combi or unvented cylinder gives mains pressure throughout.

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 Harrow: questions

How much should I budget for a loft bathroom in Harrow?

A loft bathroom in Harrow 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 Harrow?

Building control for Harrow 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 Harrow.

Is the home survey in Harrow 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.

Is a bath too heavy for a loft floor?

A standard acrylic bath is usually fine on a loft floor built for a conversion, but a filled bath with someone in it is heavy, and stone-resin or cast-iron baths are much heavier still. We check the joist size, span and direction at the survey, and a heavy bath may need a structural check and strengthening first.