Bathroom Renovation Bermondsey
Bathroom and wet-room refurbishment in Bermondsey, 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 creates bathrooms and en-suites throughout Bermondsey, from spacious warehouse conversions to post-war estate flats and compact new-build apartments in SE16. We tank, waterproof, tile and finish every bathroom properly, paying particular attention to the drainage, ventilation and sound separation that flats above other homes demand.
In Bermondsey, 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 Bermondsey: 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 Bermondsey
Bermondsey range: choose above
How the job runs
- Free design visit at your Bermondsey 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.
Waterproofing bathrooms in Bermondsey flats
In a Bermondsey apartment your bathroom usually sits directly above another home, so getting the waterproofing right is not optional. We fully tank wet areas before tiling, form falls that carry water to the drain, and detail the junctions where floor meets wall so nothing can track through to the flat below. This protects your investment and your relationship with the neighbours beneath you.
Ventilation is the other priority in these tightly sealed conversions and new-builds, where poor airflow quickly leads to condensation and mould. We install extraction that meets building regulations and vents correctly to the outside or the block's system, and we route drainage to suit the existing soil stack, coordinating any changes with the managing agent so the whole building's plumbing stays sound.
Housing in Bermondsey
For Bermondsey the Council Tax list gives about 27,150 homes; by type 89% flats and 11% houses, by age 73% post-war, 12% interwar and 9% older than 1919. Where most homes are flats, a bathroom in a flat in Bermondsey sits over a neighbour's ceiling, so tanking comes first.
Adding a second bathroom or WC to a Bermondsey flat
Adding a second bathroom or a WC to a Bermondsey flat is notifiable work. Southwark's final fees and charges schedule sets a building control charge for installing a new WC, shower or utility, so a new en-suite goes on a building regulations application. The inspector looks at the drainage and the ventilation, the electrics are certified as well, and the completion certificate is what a buyer's solicitor will ask for later. Budget for it and book it at the design stage.
In Bermondsey 89% of homes are flats, and in a flat the position of a new bathroom is governed by the soil stack. A WC needs a large bore waste at a steady fall, so a room far from the stack either needs a raised floor or a macerator, and the lease may restrict macerators. We survey the route before the layout is fixed, check what the lease says about new wet rooms over living space below, and put the application in once the route is proven.
Wet rooms and en-suites across SE16
Warehouse conversions in Bermondsey often have room for a generous walk-in shower or a full wet room, and we build these with continuous tanking, a level threshold and underfloor heating for a warm, unbroken finish that suits the industrial character. Where head height or column positions complicate the layout, we plan around them so the finished room feels considered rather than compromised.
New-build apartments tend to offer less space, so the skill is fitting a functional en-suite or family bathroom into a tight footprint. We use space-saving layouts, wall-hung sanitaryware and recessed storage to keep floor area clear, install underfloor heating where the build-up allows, and finish with tiling and lighting that make a small SE16 bathroom feel far larger than its plan suggests.
- Floor strengthening before large-format tiles or stone
- Notifiable bathroom electrics certified by a registered electrician under Part P
- Tanking membranes and waterproof boards behind tiles
VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Bermondsey. Counts rounded by the VOA.
Why Choose GS Renovation in Bermondsey
Bermondsey homeowners choose GS Renovation because a flat above another home leaves no room for waterproofing shortcuts, and we tank, ventilate and drain every bathroom to protect the neighbours below. One team handles tiling, underfloor heating, electrics certified by a registered electrician and any managing-agent liaison, with our founder's 30+ years of experience in conversions and new-builds.
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…
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
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 Bermondsey
What is included in your bathroom renovation price in Bermondsey?
A GS Renovation price for bathroom renovation in Bermondsey includes everything needed to finish the work and get it signed off, within £6,000 to £20,000 or more (indicative). That covers labour, materials, any Part P electrical certificate, Part P certification for any new circuit or work in the bath and shower zones, and making good. Anything uncertain at the SE16 property is flagged before starting rather than added later.
How do you stop leaks when renovating a bathroom above another Bermondsey flat?
We fully tank the wet areas before any tiling goes down, form correct falls to the drain and seal every wall and floor junction, so water cannot reach the home below. We also fit compliant extraction to control condensation and route drainage to suit the existing soil stack, coordinating with your managing agent to keep the whole block's plumbing sound.
How long does a bathroom refit take in a Bermondsey flat?
Around 10 to 15 working days on site, once the freeholder has agreed the specification. The sequence inside that window is fixed: strip-out, first fix plumbing and electrics, waste falls set, then the tray, tanking and finally tiling. In a one-bathroom flat, arrange somewhere to wash for that stretch, because the room is out of use from day one.
Can the toilet move to another wall in my Bermondsey bathroom?
Measure from the proposed spot to the soil stack first. In a Bermondsey block that vertical pipe serves every flat stacked above and below yours, so the toilet has to come to it, not the reverse. A pan outlet needs a wide pipe sloping continuously downhill, and a concrete floor has no gap to bury one in: a modest move is usually fine, whereas a long one means a raised plinth or a macerator.
Where does the extractor vent in an internal Bermondsey bathroom?
To outside, one way or another. Part F wants the fan's air carried by ductwork to the open air, and a windowless bathroom in a Bermondsey block rarely touches an outside wall, so the route has to be found above the ceiling towards the nearest external face, or into the block's own extract system where the freeholder allows. Trace that path at survey, before plasterboard closes it off.
What shower pressure can I expect after a Bermondsey bathroom refit?
Pressure follows the boiler or cylinder you already have. With a combi, water arrives at mains pressure, yet flow drops when the kitchen tap runs alongside the shower; an unvented cylinder cures that but needs a cupboard many flats cannot spare. Top-floor flats in older blocks sometimes see feeble incoming pressure too. Put a gauge on it at survey before falling for a wide rainfall head.
Does a like-for-like bathroom refit in a Bermondsey flat need building control?
Swapping a bath, basin and WC in the same positions is not the item Southwark's schedule names. Its building control charge is for installing a new WC, shower or utility, where there was none before. Electrical work in a bathroom still needs certifying, by an electrician registered with a competent person scheme or through building control, and a new extractor must meet the ventilation rules. Moving the WC to a new position can count as new drainage work, so settle that before the layout is fixed.
Is VAT on top of Southwark's building control charge for a new Bermondsey bathroom?
Yes. Southwark's final fees and charges schedule lists its building control fees excluding VAT, with VAT added at the time of invoicing or charging. So the figure shown for installing a new WC, shower or utility is not the amount you pay. Put the gross figure in the budget and allow for it when you compare Southwark with a registered building control approver.
What bathroom work suits an older Bermondsey terraced house?
Work that respects old floors and walls. In Bermondsey 10% of homes are terraced houses, and the older ones can have suspended timber floors that flex. A tiled shower floor on timber needs the joists checked and a rigid deck before tanking, or the grout can crack. Solid brick walls also hold moisture, so the extractor is sized and ducted outside rather than into the loft.
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