Bathroom Renovation Barnet

GS Renovation refits bathrooms across Barnet, from compact family bathrooms in 1930s Finchley semis to en-suites in the larger interwar homes of Mill Hill and Hendon. We handle waterproofing, drainage, tiling and heating, delivering wet rooms and bathrooms built to last.

In Barnet, 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 Barnet: 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 Barnet 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 Barnet

Proper waterproofing is what separates a bathroom that lasts from one that fails. In Barnet's interwar homes we tank and seal wet areas fully before tiling, whether we are fitting a straightforward family bathroom or a level-access wet room. Walk-in showers are increasingly popular across Finchley and Edgware, and they need the floor falls, membranes and drainage detailed correctly from the outset to stay watertight for years.

Behind the tiles we sort the parts that matter, reliable hot and cold supplies, well-graded waste runs and adequate ventilation to manage the condensation these older houses are prone to. Underfloor heating warms the room and speeds drying, a real benefit in solid-floor bathrooms. New bathroom circuits are installed to current standards and certified by a registered electrician under Part P, so the finished room is safe as well as good-looking.

Housing in Barnet

Of the 160,480 homes the valuation list records in Barnet, 20% were built before 1919, 34% between the wars and 46% since 1945; 50% are flats and 50% are houses. A bathroom in a flat in Barnet sits over a neighbour's ceiling, so tanking comes first, which matters here because many homes are flats.

En-suites, shared lets and Barnet's HMO Article 4 direction

Adding an en-suite to each bedroom so a Barnet house can be let to sharers is where a bathroom job meets a planning question. The Planning Data record for Barnet's Article 4 direction on small houses in multiple occupation gives a start date of 2016-05-29. Where the direction applies, turning a family house into a small HMO needs planning permission, which would otherwise not be required for that change. Confirm the position with Barnet Council before the en-suites are designed, because a refusal leaves you with extra bathrooms in a house you cannot let as intended.

50% of Barnet's homes are flats, and a bathroom in a flat sits over someone else's ceiling. Before the old bath comes out, photograph the ceiling below with the neighbour's agreement, so any existing crack is on record. Then the sequence matters: waste connections are tested with water before boxing in, the floor is tanked before it is tiled, and noisy breaking out is kept to the hours the lease allows. A leak that shows downstairs months later is one of the most expensive faults a flat bathroom can have, because it damages two homes and a relationship with the neighbour.

Space-saving bathrooms in period Barnet homes

The bathrooms in Barnet's 1930s semis are often tight, tucked over the stairs or squeezed beside a chimney breast, so a clever layout matters. We plan sanitaryware, storage and screens to make the most of every inch, whether we are updating the family bathroom or carving an en-suite out of a box room or loft conversion. Concealed cisterns and wall-hung fittings free up valuable floor space.

Finish is where these rooms come alive. We tile fully to the waterproofed substrate, fit quality brassware and sanitaryware, and add the heating, lighting and extraction that make a bathroom comfortable year-round. From a compact en-suite in a Golders Green semi to a spa-style family bathroom near Hampstead Garden Suburb, the plumbing and tiling are handled by our own team and the electrics are certified by a registered electrician.

• En-suite creation in bedrooms and loft rooms
• Floor strengthening before large-format tiles or stone
• Concealed cisterns, frames and wall-hung sanitaryware

VOA Council Tax stock of properties, March 2025, for all 42 statistical areas in Barnet. Counts rounded by the VOA.

Before committing to bathroom renovation in Barnet, it is worth looking at chimney breast removal in Barnet, our Barnet area guide, builders in Barnet, bathroom fitters in London, bathroom renovation anywhere in London and Bathroom Tile Ideas.

The GS Renovation Difference in Barnet

Homeowners across Barnet choose us for bathrooms because we get the hidden work right, the tanking, drainage and ventilation, not just the tiles on top. Our founder's 30+ years on the tools means we know how these houses behave. One team handles plumbing, tiling, heating and notified electrics for a watertight, lasting result.

Reviewed jobs near Barnet

2 MyBuilder reviews from Barnet, with each customer's own job title:

• Bathroom Refurbishment, Barnet, 14 Oct 2021 (5 out of 5)
• Install new kitchen, Barnet, 15 Apr 2022 (5 out of 5)

Read all 31 on our reviews page.

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.