Bathroom Renovation Finchley

GS Renovation renovates bathrooms across Finchley, from the family bathrooms of 1930s semis and period houses to compact bathrooms in N3 flats. We take on the waterproofing, drainage, tiling and finishing as one project, delivering wet rooms and modern bathrooms built to last in solid older houses.

In Finchley, 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 Finchley: 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 Finchley 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 en-suites in Finchley homes

A well-built bathroom in a Finchley house starts with proper waterproofing. We tank the walls and floor before tiling so water never reaches the structure, which matters in older houses and flats where a leak can track into timber floors below. From there we build walk-in showers and full wet rooms with the falls set correctly to the drain, and we finish with quality tiling, underfloor heating and ventilation that clears moisture and protects the room long term.

The bedrooms in Finchley's larger 1930s and interwar homes often have room for an en-suite, and we carve these out without wasting space, running new drainage and extract back to the existing stacks. On tighter plots we plan compact layouts that still feel generous, and every bathroom includes the notifiable electrical work, certified by a registered electrician under Part P, from the lighting and shower circuits to the underfloor heating.

Housing in Finchley

Around 19,250 homes make up Finchley on the valuation list; 59% are flats and 41% houses, and 38% date from before 1919, 26% from between the wars and 36% from after 1945. Most homes here are flats, and a bathroom in a flat in Finchley sits over a neighbour's ceiling, so it is tanked before tiling and a moved WC needs the freeholder's licence.

Bathrooms in Finchley Garden Village front rooms and period flats

In Finchley Garden Village, the council's design guidance records that the original houses were not built with dormer windows or rooflights, and that such additions can dramatically affect their character. A bathroom made from a bedroom or box room there should be planned around its existing window for daylight, with any rooflight treated as a question for Barnet Council rather than assumed. Plan the fan duct to discharge through a side or rear wall, which leaves the roof slopes untouched, and put the shower where the window lights it. A sun tunnel still cuts through the roof, so raise it with the council in the same way.

Elsewhere in Finchley the bathroom often sits in a flat in a converted house: 59% of Finchley's homes are flats and 38% were built before 1919. Under a period bathroom floor there is often a lath and plaster ceiling belonging to the flat below, and it cracks easily when old tiles are broken out above it. Break out by hand rather than with a heavy breaker, and screw rather than nail the new boards. Agree with the downstairs owner that their ceiling is looked at before and after, so any damage is dealt with promptly and not argued over months later.

Space-saving bathrooms in N3 homes

Original bathrooms in Finchley semis can be narrow, with a window on one wall and the soil stack fixed in place, which limits where fittings can go. We design around those constraints, using wall-hung units, walk-in enclosures and considered storage to make a small room feel open. Where the layout allows, we reconfigure the space to fit a proper shower and a separate bath, a common request on these family homes.

Good drainage and ventilation are as important as the tiles. We upgrade the extract, set the pipework falls correctly and tank thoroughly so the finished bathroom stays sound in a house that may be 90 years old. Underfloor heating warms tiled floors that would otherwise feel cold, and we handle the plumbing, electrics and finishing together so the room is completed properly rather than in disconnected stages.

• En-suite creation in bedrooms and loft rooms
• Notifiable bathroom electrics certified by a registered electrician under Part P
• Full plumbing, drainage and waterproofing (tanking)

VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Finchley. Counts rounded by the VOA.

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

Why Finchley Homeowners Choose GS Renovation

Finchley homeowners choose GS Renovation because we build bathrooms that stay watertight in older Finchley houses and flats, not just ones that look good on day one. We tank and waterproof thoroughly, set the drainage and ventilation right, have the electrics certified by a registered electrician under Part P, and finish the tiling and heating to a high standard, backed by our founder's 30+ years on the tools.

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.