Bathroom Renovation Bromley
Bathroom and wet-room refurbishment in Bromley, tanked, plumbed and tiled by one team.
- Rated 4.9 from 31 reviews on MyBuilder
- London guide: £6,000 to £20,000+
- 10 to 15 working days on site
- Free design visit, itemised quote
GS Renovation fits bathrooms across Bromley, from family bathrooms in BR1's post-war and interwar houses to en-suites in period homes in Chislehurst and Beckenham. We handle the waterproofing, drainage, tiling, heating and ventilation as one job, so your new bathroom is built to last and properly protected against leaks.
In Bromley, 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 Bromley: we carry the tanking, plumbing and tiling as one contract, with the electrics certified by a registered electrician.
Price guide
| Work | Indicative London range |
|---|---|
| Bathroom renovation, full refit | £6,000 to £20,000+ |
Indicative London ranges (MyBuilder and Checkatrade, 2026), not a quotation. Prices checked September 2026. Full breakdown: Bathroom Renovation Cost.
Quick estimate for Bromley
Bromley range: choose above
How the job runs
- Free design visit at your Bromley home and an itemised quote.
- Strip-out, then first-fix plumbing and electrics.
- Tanking to the wet areas, then tiling.
- Sanitaryware and second fix, with notifiable electrics certified by a registered electrician. Typically 10 to 15 working days on site.
Wet rooms and walk-in showers in Bromley
A walk-in shower or full wet room is a popular upgrade in Bromley's interwar houses, but it only works when the waterproofing is done properly. We tank the walls and floor before a single tile goes on, forming falls to the drainage so water runs away cleanly rather than pooling. Skipping this step is the usual cause of the damp and staining we are so often called in to put right in older BR-postcode homes.
In a 1930s semi in BR5 or BR6 the original bathroom is often small, so we plan the layout carefully to fit a generous shower, the sanitaryware and storage without it feeling cramped. We upgrade the drainage and extraction at the same time, because a well-ventilated bathroom stays free of condensation and mould, and we finish with tiling and heating designed to work together.
Housing in Bromley
Take the 143,450 or so homes the valuation list gives Bromley: 33% flats, 67% houses, 17% from before 1919, 30% interwar and 53% post-war. A semi in Bromley can vent its bathroom through the flank, and 24% of homes here are semi-detached.
Bathrooms in older Bromley houses and in flats above neighbours
In a Bromley house built before 1919, a group that is 17% of the borough's homes, the bathroom was often added long after the house was built, sometimes in a rear addition and sometimes carved from a bedroom. Strip-out is where that history shows. Look for lead supply pipes, a cast iron soil stack with tired joints, and joists notched deep by earlier plumbers to take waste pipes. We record each one before the new layout is fixed, because a joist cut half through under the bath position has to be strengthened before tiles and a filled bath put weight on it.
A bathroom in a flat sits over someone else's ceiling, and flats are 33% of Bromley's homes. The lease usually says what floor finishes and alterations are allowed, and moving a WC or shower means connecting to a soil stack that serves the whole building. Ask the managing agent for the licence process before design, and put a waterproof layer under the tiles across the whole floor, not just the shower area. A leak through to the flat below can become a claim against the owner above, and prevention costs far less than the repair.
En-suites and space-saving layouts in Bromley
Interwar Bromley houses rarely came with en-suites, so we create them from the corner of a bedroom or an oversized landing, adding a bathroom near where the family sleeps without losing a whole room. We run the new drainage back to the existing soil stack, which needs planning around the layout of a 1930s semi, and we soundproof and ventilate the space so it works well within the house.
Underfloor heating suits these projects, freeing wall space in a tight en-suite and warming tiled floors that would otherwise feel cold. In period homes near Beckenham Place Park or Chislehurst Common we design space-saving layouts that use every inch, wall-hung basins, recessed shelving and slim shower enclosures, so a small footprint in BR3 or BR7 still delivers a proper, comfortable bathroom.
- Walk-in showers and wet-room installation
- Tanking membranes and waterproof boards behind tiles
- Freestanding and built-in bath installation
VOA Council Tax stock of properties, March 2025, for all 39 statistical areas in Bromley. Counts rounded by the VOA.
Why Choose GS Renovation in Bromley
Bromley homeowners choose GS Renovation because we get the hidden work right, the tanking, the falls, the drainage and the ventilation, before any tiling begins. One team handles the plumbing, electrics, heating and finish, so there is no gap for leaks to appear later. With our founder's 30+ years on the tools, we build bathrooms that stay watertight.
My husband and I are extremely pleased with the work. The standard of the work is outstanding and Saiid has a great eye for detail and will not leave…
Excellent service. George's knowledge and skills are the best in the market. He knows what he is doing, does really high quality work, gives good…
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
FAQ
Frequently Asked Questions about Bathroom Renovation Bromley
Why do bathroom renovation quotes in Bromley vary so much?
Quotes for bathroom renovation in Bromley vary because they rarely price the same work, even inside £6,000 to £20,000 or more (indicative). One builder includes making good and building regulations compliance for any new drainage, extraction or notifiable electrics, another leaves both out. GS Renovation itemises every line for the BR1 property, so you can see what is in and what is missing. Compare scope before totals.
Do I need permission to add an en-suite to my Bromley interwar house?
Adding an en-suite inside your Bromley home does not need planning permission, as you are not changing the exterior. It is building regulations work, and the new electrics and any drainage changes must meet those standards, with notifiable electrical work certified by a registered electrician. The most important part is proper tanking and ventilation. We handle the drainage, waterproofing and sign-off so your new en-suite is safe and watertight. A listed building is the exception: work that affects its character, inside or out, including an extension or taking out a wall or chimney breast, needs listed building consent from Bromley Council, and doing it without consent is a criminal offence.
How long does a bathroom refit in a Bromley house take?
Most take 10 to 15 working days from strip-out to handover. The fixed stages are plumbing and electrical first fix, plastering or boarding, tanking, then tiling and fitting. Tanking and tile adhesive need drying time, which is why the middle of the job can look quiet while the waterproofing cures.
Can the toilet move to another wall in my Bromley bathroom?
It depends on the distance to the soil stack and the joists. A toilet needs a large waste with a steady fall, so moving it away from the stack means running that pipe under the floor, which only works where the joists run towards the stack. Crossing joists would mean notching them, which the engineer rarely allows.
Will a rainfall shower work with the boiler in my Bromley house?
That depends on whether you have a combi or a cylinder. A combi gives mains pressure but limited flow, so a large shower head may run weak if a tap opens elsewhere. A cylinder with a gravity tank needs a pump. An unvented cylinder handles high flows well. We check pressure and flow before choosing the valve.
Is a cast-iron or stone bath too heavy for an upstairs floor in Bromley?
It can be. Filled with water and a bather, a heavy freestanding bath puts a concentrated load on a few joists, and older floors were not sized for it. We lift boards to check joist size, spacing and condition, and where needed add joists or spreader boards under the feet before the bath goes in.
Can a ground-floor shower room be added to a Bromley house for an older relative?
Usually, and the drainage is the part building control cares about. New drainage is building regulations work, and in Bromley a building notice for it must be deposited at least two days before work starts. A shower on a solid ground floor needs a waste run cut into the slab or a pumped unit, and a level-access tray needs a lowered area. We plan both before ordering the tray, since the floor decides which trays will work.
Can the downstairs rear bathroom of a Bromley terrace move upstairs?
Often, and it frees the ground floor for a bigger kitchen. 23% of Bromley's homes are terraced houses, and in older terraces the bathroom was frequently fitted behind the kitchen. Upstairs, the new soil pipe needs a route to the existing drain, the water supply needs enough pressure at the higher level, and the joists need checking under the bath. The old downstairs room then becomes a utility, a WC or part of the kitchen.
Can a Bromley house be let to sharers after en-suites are added?
Not without checking planning first. Bromley has a non-immediate Article 4 Direction removing HMO conversion rights under Part 3, Class L across all wards except Biggin Hill and Darwin. Where it applies, changing a family house into a small shared house needs planning permission, however good the new bathrooms are. Get a written planning answer before the en-suites are designed around separate lettings, because a refusal leaves a layout built for sharers in a family home.
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