Bathroom Fitters in Harrow

Can we join the bathroom and separate WC in a 1930s Harrow semi?

Usually yes, and it is the refit we price most often in Harrow. Roughly half of Harrow's homes were built between 1919 and 1939, according to the Valuation Office Agency's 2025 stock figures. Neighbourhoods such as North Harrow and Rayners Lane are almost entirely interwar. The typical first floor has a narrow bathroom and a WC in its own small room next door. The first question is what the dividing wall is made of. Many are lightweight stud partitions that can come out as part of the strip-out. Some are masonry and may carry load from the roof or ceiling, and we will not remove those without a structural engineer's view.

The second question is the soil stack. It normally runs down the back or side wall, so keeping the WC on that wall keeps the fall simple. Moving it across the room usually means lifting the floorboards and running the waste between the joists, which only works in the direction the joists run. The result is one usable room, often with space for a full-size bath or a separate shower. One thing to weigh: a family house with one WC loses its separate toilet. Some owners keep a downstairs cloakroom for that reason.

What about bathrooms in Harrow's older terraces?

In Harrow's Victorian and Edwardian terraces the bathroom is often at the back, in the rear addition, sometimes at ground floor behind the kitchen. Pre-1919 houses are a minority in Harrow but cluster around West Harrow, Greenhill, Wealdstone and the Pinner Road area. A ground-floor bathroom behind the kitchen is easy to drain but cold, because it often has three external walls and a suspended or solid floor with no insulation. We look at the floor before tiling and suggest insulated backer board where it will fit.

Where the bathroom is reached through the kitchen, think twice before turning it into an HMO room layout. Harrow's HMO standards say no toilet should open directly onto a food preparation area unless mechanical extraction and a wash-hand basin are provided. Moving the bathroom upstairs is possible, but it means a new soil route, and on a terrace that usually runs down the back wall. We will tell you at survey whether the route exists.

What does a Harrow HMO licence require of its bathrooms?

Harrow's HMO amenity standards set how many bathrooms and WCs a licensed house needs, where they must be and how they are ventilated. They are an appendix to every Harrow HMO licence, and the licence holder is responsible for meeting them. The figures below are from the May 2020 standards (version 5). Harrow adopted updated licence conditions in December 2025, so check the conditions on your own licence.

• One to four occupiers: at least one bathroom and one WC, which can be combined, with a wash-hand basin in each
• Five occupiers: one bathroom and a separate WC with its own basin
• Six to ten occupiers: two bathrooms and two separate WCs with basins (one WC can be within a bathroom)
• Amenities no more than one floor away from the people using them
• Baths at least 1700 by 760 mm and showers at least 800 by 800 mm
• Ventilation by an openable window of at least a twentieth of the floor area, or a fan giving three air changes an hour, run from the lighting circuit with a 20-minute overrun
• Constant hot and cold water to every bath, shower and basin

How do we refit an HMO bathroom without leaving tenants stranded?

We refit one room at a time. Because the standard needs two bathrooms from six occupiers, most licensed Harrow HMOs have a second bathroom or WC that can carry the house while the other is out of use. We agree the order with you, tell the tenants which room is closed and for how many days, and keep the second room's water and drainage live throughout. The fan, light and any heated rail are wired to the licence standard while the walls are open.

Does Harrow's hard water change the specification?

Yes. Affinity Water's 2025 report for its Harrow North zone gives a total hardness of 360 mg/l as calcium carbonate, which is very hard water. In a bathroom that hardness shows up as scale in thermostatic cartridges, fine-nozzle rainfall heads, tap aerators and electric shower elements. We choose valves with replaceable cartridges, shower heads with rubber nozzles that can be wiped clear, and isolation valves on each supply so a cartridge can be serviced without draining the house.

If you plan to fit a softener, keep the kitchen drinking tap on unsoftened water, and plumb the bypass in while the walls are open.

How do parking and skips work on a Harrow bathroom job?

A bathroom refit runs over several working days, so on a street in a controlled parking zone the van needs a visitor permit for each day. Harrow residents in a CPZ can buy up to 100 virtual visitor permits a year, each valid for up to 24 hours. The council's own example of a visitor is a decorator or repair person. For the skip, a driveway is simplest if you have one: Harrow does not require a licence for a skip on private land.

A skip on the road needs a licence, which the skip company applies for, and each skip needs its own licence each time it goes out. In a parking bay or CPZ a bay suspension may be needed as well. Harrow asks for up to 10 working days to process, so we book it when you accept the quote. On narrower terrace streets we often use bags and remove waste in the van instead.

What changes the price of a Harrow bathroom?

Taking out the partition between bathroom and WC, and whether it is stud or masonry. How far the WC moves from the soil stack. The state of the floor in a ground-floor rear bathroom. The extra items an HMO licence asks for. Parking and waste: a driveway skip is simpler than a licensed skip and bay suspension on a CPZ street.

Certificates and defined jobs are a fixed price confirmed before we attend; repairs are charged by the hour, with the rate and an estimate confirmed before we attend.

Where in Harrow we work

We fit bathrooms across HA1, HA2 and HA3: Harrow town centre and Greenhill, Wealdstone and Harrow Weald, North Harrow, South Harrow, West Harrow, Rayners Lane and Harrow on the Hill, and on to Kenton, Stanmore and Edgware. If your house is listed, Harrow Council says consent is needed for internal or external changes that affect its special interest, and working without it is a criminal offence.

Ask the council before we strip out a historic bathroom. Harrow has over 300 listed buildings, many on the Hill. Harrow also requires selective licences for privately rented homes in six wards, including Greenhill, Marlborough and both Wealdstone wards, so check your licence conditions before you specify a rental bathroom.

Nearby areas we cover: plumbers in Kenton, and in Pinner, Stanmore, Wembley and Northolt.

We also cover plumbing in Ruislip, and in Edgware.

What we will not take on

We do not remove masonry or load-bearing walls without an engineer's design, and we do not move or replace gas boilers. In a listed building we will not start until you have confirmed the consent position with Harrow Council. For an HMO, we fit to the standard you send us. Confirming licence compliance is the council's job, not ours.

Why people trust us in Harrow

• Repairs tested before we leave, and the area left clean
• A walk-in office on Kenton Lane, not a serviced address
• We diagnose first and tell you what we have found before doing more
• A time slot rather than a morning-or-afternoon window
• Work photographed before and after, and reported
• We tell you when you do not need something we sell

We are building a review profile under this name and would rather show you none than borrow someone else's. Ask us for references from landlords in Harrow and we will put you in touch.

Official sources

• Harrow Council: HMO conditions and amenity standards (May 2020, v5)
• GOV.UK (VOA): Council Tax stock of properties 2025, build period by area
• Affinity Water: water quality report, Harrow North zone (AF056), 2025
• Harrow Council: skip licence
• Harrow Council: visitor parking permits
• Harrow Council: listed buildings

Last reviewed October 2026 by EliteShires Property Services.