Bathroom Renovation Sutton

GS Renovation renovates bathrooms across Sutton, working within the layouts of its 1930s semi-detached and interwar suburban houses. We deliver fully waterproofed bathrooms, wet rooms and en-suites, handling the drainage, tiling, heating and ventilation as a complete job.

In Sutton, 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 Sutton: 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 Sutton 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.

Waterproofing and wet rooms in Sutton

A bathroom lives or dies on what sits behind the tiles, so every one we build in Sutton is properly tanked before a single tile goes up. For wet rooms and walk-in showers we form the falls, lay the waterproof membrane and seal every joint and upstand so water goes only where it should. In an interwar semi with timber floors, that groundwork is what stops leaks reaching the rooms below.

We plan drainage and ventilation as carefully as the finish. Moving a soil connection or adding an extractor is often needed when reconfiguring an old bathroom, and we route these correctly rather than compromising the layout. Underfloor heating, well-lit mirrors and quality tiling complete the room, giving these 1930s Sutton houses a warm, dry, modern bathroom that performs as well as it looks.

Housing in Sutton

Sutton has around 86,280 homes on the Council Tax list: 46% post-war, 41% interwar and 13% predate 1919, with 39% flats and 61% houses. 28% of homes here are terraced; a terrace bathroom in Sutton vents front, back or up, never into a party wall.

Adding a bathroom in Sutton: fees, flats and shared houses

Forming a new bathroom, shower room or cloakroom in Sutton is notifiable building work with its own line in the fee schedule, separate from refitting a room that is already a bathroom. Sutton's building control fee for that item has a standard rate, a discount rate and a regularisation fee higher than both. The difference matters most in a house where a previous owner added a downstairs toilet or an en-suite without telling anyone. When a sale survey finds it, regularisation is the only route to a certificate, and the inspector will want to see the soil connection, the extract fan and the fall on each waste.

39% of homes in Sutton are flats, and a new or moved bathroom in a Sutton flat sits above someone else's ceiling. The waterproofing under a walk-in shower, the soil pipe's route to the stack and the sound insulation in the floor all affect the flat below, and a lease can require the freeholder's consent before a wet room goes in. We tank the whole floor rather than the shower tray area alone, set the waste so it can be reached from the room if it ever leaks, and agree the noisy stripping out days with the neighbours downstairs.

En-suites and clever layouts in period homes

The interwar semis around Carshalton and Wallington often have a single family bathroom and a landing or box room that can become an en-suite. We plan these carefully, working out the drainage runs and the framing needed to add a shower room without eating into the bedrooms more than necessary, so the house gains a second bathroom that genuinely adds comfort and value.

Where the existing bathroom is tight, as it frequently is in a 1930s house, the layout does the heavy lifting. We choose sanitaryware to suit the dimensions, use a walk-in shower to free up floor space and build in recessed storage where the wall allows. Bathroom electrics fall under Part P and are certified by a registered electrician, and the plumbing, tiling and heating are all completed by our own team.

• Wall and floor tiling in stone, porcelain or mosaic
• Complete bathroom design and planning
• Shower pumps and pressure improvements where flow is poor

VOA Council Tax stock of properties, March 2025, for all 24 statistical areas in Sutton. Counts rounded by the VOA.

When comparing bathroom renovation in Sutton with other work, it helps to read chimney breast removal in Sutton, our Sutton area guide, bathroom fitting in London, how we handle bathroom renovation across London and Tiling Cost.

Why Choose GS Renovation in Sutton

Sutton homeowners choose GS Renovation because we build bathrooms that are waterproof where it counts, not just smart on the surface. One team handles the tanking, drainage, ventilation, heating and tiling, with the electrics certified by a registered electrician. Our founder's 30+ years on the tools means we know how to fit a proper bathroom or en-suite into an interwar Sutton home.

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.