Bathroom Renovation Stanmore

GS Renovation handles bathroom design and installation across Stanmore, fitting out original bathrooms and creating new en-suites in the post-war houses, flats and 1930s semis of HA7. We deliver fully waterproofed, well-drained rooms that make the most of the space these homes offer.

In Stanmore, 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 Stanmore: 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 Stanmore 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 Stanmore

A lasting bathroom starts behind the tiles. We tank and waterproof the walls and floor before tiling, so moisture cannot track into the structure of your Stanmore home. For walk-in showers and full wet rooms we form the falls correctly, seal every junction and set the drainage so water runs cleanly away. In older houses with suspended timber floors, this careful build-up matters even more, protecting the joists below from any long-term damp.

Good ventilation is part of the same job. Original Stanmore bathrooms were often poorly ventilated, so we fit effective extraction to clear moisture and keep the room fresh, which also protects the new finishes. We can add underfloor heating for comfort and to help surfaces dry, and we run the plumbing and drainage to modern standards. New circuits and circuit changes near the bath or shower are notifiable under Part P, so a registered electrician certifies that work as part of the project.

Housing in Stanmore

Count the homes in Stanmore and you get about 6,860: 75% built since 1945, 21% between the wars and 4% before 1919, with flats at 45% and houses at 55%. A detached house in Stanmore can add a soil stack for an en suite, and 22% of homes here are detached.

Stanmore bathrooms in flats and en-suites for shared lets

45% of homes in Stanmore are flats, and a bathroom in a flat sits over somebody else's ceiling. That changes the priorities. A leak from a new shower tray becomes a claim from the flat below, so the lease and the building insurance are read before design, and the tanking should be water-tested before any tile goes on. Moving the bathroom to a different room normally needs the freeholder's consent, because the new soil route has to reach the building's stack. In a Stanmore flat, the bathroom you can have is decided by where that stack runs.

Adding en-suites so rooms can be let separately is a different matter. Harrow's immediate Article 4 Direction on small HMOs means any new small HMO created on or after 12 June 2026 requires planning permission. Turning a Stanmore family house into a let for three to six unrelated sharers is that change of use, and extra en-suites are often part of the same works. If that is the plan, settle the planning position before the bathrooms are designed, since the room layout, the fire separation and the number of wet rooms all follow from the permission.

En-suites and space-saving layouts in HA7

The generous bedrooms in many Stanmore houses leave room to carve out an en-suite, and we plan these carefully so the new drainage and supply pipework routes sensibly without disruptive chasing. Where space is tighter, in a smaller box room or an awkward original bathroom, we design space-saving layouts with wall-hung units, compact showers and clever storage that make the most of every corner without feeling cramped.

We handle the full fit-out, from tiling and screens to sanitaryware, taps and lighting, choosing finishes that suit the age and feel of your home. Because our own team runs the plumbing, the tanking and the electrics, the trades are properly coordinated and the room is watertight and warm when we hand it back. The finished bathroom is built to cope with daily family use for years to come.

• Full plumbing, drainage and waterproofing (tanking)
• Complete bathroom design and planning
• Ventilation and extraction ducted to outside

VOA Council Tax stock of properties, March 2025, for Stanmore Park and Stanmore Uxbridge Road. Counts rounded by the VOA.

For the wider picture around bathroom renovation in Stanmore, see chimney breast removal in Stanmore, bathroom renovation across Harrow, bathroom fitting in London, how we handle bathroom renovation across London and Small Bathroom Ideas.

The GS Renovation Difference in Stanmore

Stanmore homeowners choose GS Renovation because we get the parts you cannot see right, the tanking, drainage and ventilation, as well as the tiling and finish you can. We plan en-suites and space-saving layouts to suit Stanmore homes, with the notifiable electrics certified by a registered electrician. With our founder's 30+ years on the tools, we deliver watertight bathrooms that last.

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.