Bathroom Renovation Chiswick

GS Renovation refits bathrooms across Chiswick, fitting modern wet rooms, en-suites and family bathrooms into the compact spaces of W4's Victorian and Edwardian terraces. We handle the waterproofing, drainage, tiling, heating and ventilation in-house, so a bathroom in a period home is watertight and built to last.

In Chiswick, 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 Chiswick: 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 Chiswick 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 tanking in Chiswick homes

A leaking bathroom in a Chiswick terrace can travel into solid walls and down onto the room below, so we treat waterproofing as the foundation of every job. We fully tank wet rooms and walk-in showers before a tile is laid, form the falls to the drain correctly, and upgrade drainage and extraction so moisture leaves the room rather than sitting in old plaster. In period homes that difference protects the fabric of the house.

Because W4 bathrooms are often carved out of a closet wing or a small return, layout is everything. We plan space-saving arrangements that fit a proper shower, basin and WC into a tight footprint, add underfloor heating to free up wall space, and choose tiling that suits the age of the house. The result is a bathroom that feels generous despite the modest dimensions typical of these terraces.

Housing in Chiswick

Chiswick has around 16,410 homes on the Council Tax list: 34% post-war, 15% interwar and 51% predate 1919, with 59% flats and 41% houses. Most homes here are flats, and a bathroom in a flat in Chiswick sits over a neighbour's ceiling, so it is tanked before tiling and a moved WC needs the freeholder's licence.

Adding a second bathroom to a Chiswick period house

In Chiswick 51% of homes were built before 1919, and houses of that age were planned with one bathroom at most, which may itself have been added later. A second bathroom or an en-suite has to come from a bedroom corner or a box room, and the first question is where its waste goes. The soil stack in a period house is normally on an outside wall at the back, so a new room far from it needs a long run with a steady fall, which the floor joists may not allow.

Hounslow names installing a new bathroom among the smaller projects usually handled on a building notice, so an added bathroom is notified before work starts, even where a like-for-like refit elsewhere in the house would not be. Work can start 48 hours after the notice. Use that time to lift boards and confirm joist direction along the waste route in the Chiswick house, since it decides whether the WC can go where the plan shows or needs another position altogether.

En-suites and family bathrooms in W4

Many Chiswick projects add an en-suite off a main bedroom or reconfigure the existing bathroom over the closet wing to work harder for a growing family. We handle the new soil and waste connections, the concealed plumbing and the mechanical ventilation needed to keep an internal or period room dry. Where an en-suite sits above a habitable room, we detail the waterproofing and pipework so there is no risk of hidden leaks later.

New circuits, such as electric underfloor heating or a shower, and circuit changes near the bath or shower are notifiable under building regulations, and it is certified by a registered electrician under Part P, or notified to building control. We finish with quality tiling, sanitaryware and heated towel rails, working tidily in an occupied home. In W4 terraces where every square metre counts, thoughtful layout and proper services turn an awkward space into a bathroom that works day to day.

• Underfloor heating and heated towel rails
• Soil pipe and waste re-routing within the floor build-up
• Grout, silicone and trim detailing at completion

VOA Council Tax stock of properties, March 2025, for Chiswick North East, Chiswick South East, Chiswick South West and Chiswick Park. Counts rounded by the VOA.

Once the bathroom renovation work in Chiswick is scoped, people usually go on to read chimney breast removal in Chiswick, bathroom renovation across Hounslow, bathroom fitting in London, how we handle bathroom renovation across London and Adding a Downstairs Toilet.

Why Choose GS Renovation in Chiswick

Chiswick homeowners choose GS Renovation because we get the hidden work right, full tanking, drainage, ventilation and certified electrics, before the tiles ever go on. We know how to fit wet rooms, en-suites and family bathrooms into the tight closet-wing spaces of W4 terraces, and our founder's 30+ years on the tools means a watertight result that protects the house.

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.