Bathroom Renovation Isleworth

GS Renovation creates bathrooms, en-suites and wet rooms across Isleworth, working within the tight footprints of TW7's post-war flats and houses and its older Victorian and Edwardian terraces. We handle the waterproofing, drainage, tiling, heating and ventilation properly, so your new bathroom looks right and stays dry for years.

In Isleworth, a full bathroom refit typically costs £6,000 to £20,000 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Isleworth: we carry the tanking, plumbing and tiling as one contract, with the electrics certified by a registered electrician.

How the job runs

1. Free design visit at your Isleworth home and an itemised quote.
2. Strip-out, then first-fix plumbing and electrics.
3. Tanking to the wet areas, then tiling.
4. Sanitaryware and second fix, with notifiable electrics certified by a registered electrician. Typically 10 to 15 working days on site.

Wet rooms and walk-in showers in Isleworth

A wet room or walk-in shower suits the awkward spaces found in Isleworth terraces, whether that is a former box room, a landing corner or the end of a closet wing. The key is getting the waterproofing right, so we tank the floor and walls fully before a single tile goes on, form the falls to the drain accurately, and bond the membrane into the tanking. Done properly, this prevents the leaks that plague poorly built showers.

Older terraces in TW7 often have original drainage that was never designed for a modern shower, so we upgrade waste runs and soil connections to cope with the flow. Good extract ventilation is essential in these solid-walled homes, where damp lingers, so we fit humidity-controlled fans that clear moisture before it reaches the plaster. Underfloor heating warms the tiled floor and helps the room dry quickly between uses, which matters in a period house.

Housing in Isleworth

Take the 13,670 or so homes the valuation list gives Isleworth: 56% flats, 44% houses, 19% from before 1919, 21% interwar and 61% post-war. Since most homes here are flats, a bathroom in a flat in Isleworth sits over a neighbour's ceiling, so tanking comes first.

Adding a bathroom in Isleworth: notice, timing and the neighbour below

Hounslow says a building notice is usually used for smaller projects, and installing a new bathroom is one of the examples it gives. That fits a second bathroom in an Isleworth house, or an en-suite taken from part of a bedroom. Work can start 48 hours after giving notice, and further information can still be asked for afterwards. Have the waste route, the soil connection and the extract fan duct drawn before the notice goes in, so any later question is answered from a drawing and not by lifting a new floor.

56% of Isleworth homes are flats, and in a flat the new bathroom sits over somebody else's ceiling. Hounslow needs inspection requests with at least 1 working day's notice. Time the drainage test so the inspector sees the new waste runs exposed, then tank the floor and walls only after that visit. The boxing through the floor and the connection to the shared stack are the details the freeholder's surveyor will also want photographed, so take the pictures on the day of the inspection.

Space-saving en-suites in Isleworth period homes

Adding an en-suite to an Isleworth bedroom, or squeezing a family bathroom off a narrow landing, is all about clever planning. We use compact and wall-hung sanitaryware, sliding or pocket doors, and concealed cisterns to free up floor space in rooms that were never designed with bathrooms in mind. Careful setting out around the joists, the soil stack and any chimney breast lets us fit a proper shower, basin and WC into a surprisingly small footprint.

Bathroom electrics fall under building regulations, so lighting, shaver points, heated towel rails and extractor fans are all installed to the correct zones and certified by a registered electrician under Part P. We finish with fully tiled or panelled walls, sealed junctions and quality brassware, choosing tiling that suits the character of your home, post-war or period. From a single en-suite to a full family bathroom, everything is handled by one team, so the plumbing, waterproofing, tiling and electrics all tie together neatly.

• Underfloor heating and heated towel rails
• Floor strengthening before large-format tiles or stone
• Walk-in showers and wet-room installation

VOA Council Tax stock of properties, March 2025, for Isleworth & Ivybridge, Syon Green and Spring Grove. Counts rounded by the VOA.

Once the bathroom renovation work in Isleworth is scoped, people usually go on to read chimney breast removal in Isleworth, bathroom renovation across Hounslow, bathroom fitting in London, how we handle bathroom renovation across London and Tiling Cost.

Trusted Bathroom Renovation in Isleworth

Isleworth homeowners choose GS Renovation for bathrooms because we get the hidden work right: full tanking, proper falls, upgraded drainage and effective ventilation, not just attractive tiling. That is what keeps a bathroom in a solid-walled TW7 terrace dry and damp-free. With our founder's 30+ years on the tools and one team for every trade, your bathroom is built to last, with the electrics certified by a registered electrician.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.