Bathroom Renovation Hendon
Bathroom and wet-room refurbishment in Hendon, tanked, plumbed and tiled by one team.
- Rated 4.9 from 31 reviews on MyBuilder
- London guide: £6,000 to £20,000+
- Free design visit, itemised quote
GS Renovation renovates bathrooms and en-suites throughout Hendon, working in NW4's flats and interwar houses alike. We take a bathroom from stripping out and waterproofing through to tiling, heating and the finished walk-in shower or family bathroom, all handled by one team.
In Hendon, 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 Hendon: 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 Hendon
Hendon range: choose above
How the job runs
- Free design visit at your Hendon 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.
Wet rooms and waterproofing in Hendon homes
A lasting bathroom starts behind the tiles, so we tank and waterproof the walls and floor properly before anything is fixed, which matters in Hendon's older interwar houses where original floors can flex. For a wet room or walk-in shower we form the falls, seal the substrate fully, and set the drainage and ventilation correctly so moisture is managed rather than left to cause damp.
Ventilation is often the weak point in these 1930s houses, where a small original bathroom had little more than an openable window. We fit proper extraction, run the drainage to suit the existing soil stack, and add underfloor heating where you want a warm, comfortable floor. New circuits and circuit changes near the bath or shower are notifiable under the Building Regulations, so the wiring is certified under Part P by a registered electrician as part of the work.
Housing in Hendon
Of the 16,060 homes the valuation list records in Hendon, 20% were built before 1919, 37% between the wars and 43% since 1945; 62% are flats and 38% are houses. Where most homes are flats, a bathroom in a flat in Hendon sits over a neighbour's ceiling, so tanking comes first.
En-suites, sharers and Barnet's HMO direction in Hendon
Adding an en-suite to every bedroom is one way to prepare a Hendon house for letting to sharers, and it is also the point at which planning can come in. The Planning Data record for Barnet's Article 4 direction on small houses in multiple occupation gives a start date of 29 May 2016. Where the direction applies, using a family house as a small HMO needs planning permission, even though the building work itself is internal. A landlord who renovates first and applies afterwards risks paying for bathrooms fitted for a use that is refused.
For an owner-occupied Hendon house the direction changes nothing, and an en-suite is a building control matter for the drainage, ventilation and electrics. The design brief still differs. An en-suite built for sharers needs its own extract fan with an overrun, a waste run that each room can reach at a proper fall, and fire separation where pipework passes between rooms. Settle the intended use before the layout is drawn, because moving from family use to shared use later can mean opening finished bathrooms to meet the standards that apply to HMOs.
En-suites and space-saving layouts in NW4
Hendon's interwar semis often have a boxroom or a generous landing that can become a neat en-suite, giving a main bedroom its own shower without losing the family bathroom. We plan compact layouts that make the most of tight period spaces, choosing wall-hung sanitaryware and walk-in showers that keep the room feeling open while still working around the existing pipework.
In a loft conversion or over-extension we route the drainage and manage the reduced head height so the new shower or bath sits comfortably under the roofline. In a house with room to spare, adding an en-suite as part of a wider renovation is straightforward. We tile, heat, ventilate and finish each bathroom to a standard that suits the house and holds up over years of daily use.
- Soil pipe and waste re-routing within the floor build-up
- Grout, silicone and trim detailing at completion
- Floor strengthening before large-format tiles or stone
VOA Council Tax stock of properties, March 2025, for Hendon Central, Hendon Park, North Hendon & Sunny Hill and West Hendon. Counts rounded by the VOA.
Why Hendon Homeowners Choose GS Renovation
Hendon homeowners choose GS Renovation because we get the parts you cannot see right, the tanking, the drainage and the ventilation, before the tiling ever starts. We know how NW4's interwar houses behave, we fit space-saving en-suites into tight rooms, we have the electrics certified by a registered electrician, and our founder's 30+ years on the tools stands behind the finish.
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 a great find. The job required re-plastering the walls before fitting acrylic panels. He also re-plumbed the shower waste under the solid…
The kitchen has been fitted to the high standard. Saaid was polite, professional, tidy, he pays attention to a little details that make huge…
FAQ
Frequently Asked Questions about Bathroom Renovation Hendon
How much should a Hendon homeowner set aside for bathroom renovation?
Set aside money for bathroom renovation in Hendon under three headings, structure, trades and approvals, within £6,000 to £20,000 or more (indicative), and you will not be caught out. That is how the NW4 quotation is laid out, so each element can be checked or deferred. The order also affects cash flow: the fall to the waste is set and the walls tanked before tiling.
Can a bathroom be moved to a different room in a Hendon house?
Usually, and the drainage governs how far it can go. Relocating a bathroom in your Hendon house means reaching the soil stack with adequate fall along the whole waste run, and long shallow runs do not clear reliably. Where the existing stack cannot be reached, a new connection or a pumped system is designed. That is established before the room layout is agreed rather than afterwards.
Is underfloor heating worth fitting in a Hendon bathroom?
It suits a bathroom better than most rooms, with the floor build up planned for. Electric mats under tiles in your Hendon bathroom warm the surface people stand on and free the wall space a radiator occupied, although a towel rail is usually still wanted. The mat adds height to the floor, which affects the door and the threshold. It is decided before the floor construction is finalised.
How is the soil pipe concealed in a Hendon bathroom?
In a boxed duct sized to allow access, rather than plastered in solid. The stack serving a Hendon bathroom needs rodding access at its junctions, so the boxing includes a removable panel at those points. Sealing a stack permanently behind tiles means breaking them out when a blockage occurs. The duct position is set out at first fix so the layout of the room allows for it.
Why does condensation appear in a Hendon bathroom?
Warm moist air meeting a cold surface, usually an external wall or a window reveal. In a Hendon bathroom the answer is extraction that runs long enough to clear the moisture, combined with insulation at the cold spots so surfaces stay above the point where water forms. Wiping down a wall each morning treats the symptom. Mould returning in the same corner points to the surface temperature.
What is done about the old bathroom waste in Hendon?
It is traced and either reused or capped properly. In a Hendon house a bathroom refit often reveals waste runs added over several decades, some redundant and some still serving other fittings. Anything no longer in use is removed back to the stack and capped rather than left in the floor void, because an open redundant branch lets smells back into the room.
Does converting a Hendon house for sharers need planning permission?
Where Barnet's Article 4 direction on small houses in multiple occupation applies, yes. The Planning Data record gives it a start date of 29 May 2016, and it removes the right to change a family house to a small HMO without an application. Check whether the address is covered before any bathrooms are added, because the fit-out depends on the use being allowed. HMO licensing is a separate regime again.
How should extract fans be planned for several en-suites in an interwar Hendon house?
As a set, at first fix. 37% of homes in Hendon were built between 1919 and 1939, and a house of that age was built with one bathroom and no routes planned for more. Each en-suite needs its own fan with an overrun timer, ducted to outside on a short rigid run. With several rooms the duct routes compete for the same joist voids and outside walls, so they are drawn before any ceiling is closed.
Does an en-suite need planning permission in an owner-occupied Hendon house?
Not for the internal work. An en-suite inside an owner-occupied house is a Building Regulations matter for drainage, ventilation and electrics, and Barnet Council building control or a registered approver signs it off. Planning enters if a new soil pipe or extract outlet changes a street-facing elevation in a conservation area or at an Article 4 address, or if the house changes use under Barnet's direction on small HMOs.
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