Bathroom Renovation Welling

GS Renovation renovates bathrooms across Welling, working within the 1930s semi-detached and interwar houses of DA16 where the original bathrooms are often small and dated. From full wet rooms to space-saving en-suites, we deliver proper waterproofing and clean finishes. One team handles the plumbing, drainage, tiling and electrics.

In Welling, 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 Welling: 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 Welling 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 Welling

A bathroom that lasts starts with what you cannot see. We tank and waterproof the walls and floor properly before any tile goes on, which matters in the interwar Welling houses where suspended timber floors need protecting from moisture. For a walk-in shower or a full wet room we form the falls correctly so water drains where it should, then tile over a sound, sealed substrate rather than trusting the grout alone to keep water out.

Drainage and ventilation are planned alongside the waterproofing. We make sure waste runs fall correctly to the existing soil stack on your DA16 semi, and we fit extraction that clears moisture so the room stays fresh and free of the damp and mould that plague poorly ventilated bathrooms. Underfloor heating is a popular addition, warming the floor and helping the room dry quickly after use through the colder months.

Housing in Welling

About 4,020 homes are listed for the Welling statistical area, and the mix is 78% houses to 21% flats, with 18% built after 1945, 76% in 1919 to 1939 and 5% earlier. Semi-detached houses make up 56% of homes here, and a semi in Welling can vent its bathroom through the flank.

Adding a bathroom to a Welling house with one

78% of Welling homes are houses, and a house built between the wars was designed around one bathroom, often with a separate WC beside it. A second bathroom, or an en-suite, needs a new WC that can drain by gravity to the soil stack. That pipe is large and needs a steady fall, so if the route crosses the joists instead of running between them it cannot be hidden in the floor. Where it cannot, a new stack on a rear or side wall is the next answer.

A new WC connection and a new stack are building control work in a Welling house, not only plumbing. A Bexley building notice suits a simple bathroom addition, but it does not include formal approval of the plans, so the drain runs and the ventilation are judged when the inspector sees them. We leave the new runs open until they have been seen and tested, and the extract fan is ducted to outside so the new room does not add condensation to the loft.

Space-saving layouts in interwar homes

The original bathrooms in Welling's 1930s semis are rarely large, so clever planning earns its keep. We rethink the layout to gain usable space, choosing sanitaryware and a shower enclosure that suit the real dimensions, and using wall-hung units and recessed shelving to keep the floor clear and the room feeling bigger than its footprint. Small changes to where the basin and WC sit often allow a far more comfortable bathroom.

En-suites are a frequent request as families reconfigure the interwar upstairs, often carved from a corner of a main bedroom or a boxroom. We handle the new drainage and the concealed plumbing, with the notifiable electrics certified by a registered electrician, and tile and finish the room to match the standard of the rest of the house. Whether it is the family bathroom or a compact en-suite, we make every centimetre of a DA16 home work.

• Concealed cisterns, frames and wall-hung sanitaryware
• Floor strengthening before large-format tiles or stone
• Bespoke vanity units and storage

VOA Council Tax stock of properties, March 2025, for the Welling statistical area, one of several statistical areas covering DA16. Counts rounded by the VOA.

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Trusted Bathroom Renovation in Welling

Welling homeowners choose GS Renovation because we get the hidden work right, the tanking, the drainage falls and the ventilation, before the tiling that everyone sees. We plan clever layouts that suit the compact bathrooms of interwar DA16 semis. With our founder's 30+ years on the tools, one team delivers a watertight, well-finished bathroom 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.