Bathroom Renovation Hammersmith
Bathroom and wet-room refurbishment in Hammersmith, 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 renovates bathrooms and en-suites throughout Hammersmith, working in the tight, awkward rooms of W6 conversions and Victorian and Edwardian terraces. Most W6 homes are flats, so our founder's 30+ years of experience put the soil stack first: a new shower or WC must reach that shared pipe with enough fall.
In Hammersmith, 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 Hammersmith: 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 Hammersmith
Hammersmith range: choose above
How the job runs
- Free design visit at your Hammersmith 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 tanking in Hammersmith homes
A W6 bathroom is often carved from a closet wing or part of a bedroom, and with a timber floor over someone else's ceiling the waterproofing carries real liability. Tanking goes on before any tile, and in a wet room or walk-in shower the floor falls to the drain are set first, so water never reaches the joists or the flat underneath.
Older terraces also need careful attention to drainage and ventilation. We plan waste runs around the existing soil stack, upgrade extraction to clear moisture from these enclosed period rooms, and coordinate the electrics so anything notifiable is certified by a registered electrician under Part P or notified to building control. Extraction is ducted to outside air, never into a loft or ceiling void, where damp in badly done conversions often starts.
Housing in Hammersmith
About 15,040 homes are listed for Hammersmith, and the mix is 23% houses to 77% flats, with 34% built after 1945, 9% in 1919 to 1939 and 56% earlier. Most homes here are flats, and a bathroom in a flat in Hammersmith sits over a neighbour's ceiling, so it is tanked before tiling and a moved WC needs the freeholder's licence.
Testing a Hammersmith flat bathroom before the neighbour's ceiling
77% of Hammersmith homes are flats, so a new bathroom here usually sits over somebody else's ceiling, and the order of work is built around that. New supply and waste pipework is pressure tested and left under test before a board goes down. The shower tray or wet room former is flood tested before tiling, and the tanking is inspected at the corners and the waste before it is covered. A leak found at that stage costs an afternoon. Found through a neighbour's ceiling, it costs their ceiling, their decorating and a claim against your insurance.
Where a bathroom moves and the new drainage is notified to building control, drainage inspections need 5 days' notice rather than the usual 1 day, so the floor stays open until the inspector has seen the pipes. At the end, Hammersmith and Fulham Council issues a completion certificate, and the council says you will need it when you come to sell your property. For a moved bathroom in a Hammersmith flat, keep it with the freeholder's consent for the new layout.
Space-saving en-suites for W6 terraces
Adding an en-suite to a Hammersmith terrace usually means working within a metre or two of borrowed space, so every fitting has to earn its place. We design compact layouts using wall-hung basins and toilets, sliding or pivot shower screens and slimline heated towel rails, keeping the floor clear so a small room still feels usable rather than cramped.
Underfloor heating is a favourite in these period bathrooms because it frees up wall space and takes the chill off tiled floors. We tile floors and walls to a high standard, seal every junction properly, and coordinate the plumbing and electrics with the rest of the house, so the finished en-suite suits the character and proportions of a W6 home.
- Niches, benches and recessed storage formed in the wet area
- Pressure and leak testing before any tiling starts
- Bespoke vanity units and storage
VOA Council Tax stock of properties, March 2025, for Hammersmith Broadway, Brook Green, Ravenscourt Park North and Ravenscourt Park South. Counts rounded by the VOA.
Why Hammersmith Homeowners Choose GS Renovation
In Hammersmith the hidden work sets the order: waste fall and stack connection, then tanking, then ventilation, and only then the tiling and finish you can see. Leaseholders should check the lease before the waste route moves, and our founder's 30+ years of work stand behind each step.
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
Really great job done in our bathroom to replace the shower head in the bathtub, and install a shower screen and caddy. We are very happy with the…
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
FAQ
Frequently Asked Questions about Bathroom Renovation Hammersmith
Does the cost of bathroom renovation rise in a late Victorian or Edwardian Hammersmith property?
In a late Victorian or Edwardian Hammersmith home the unknowns behind plaster are what move a bathroom renovation figure within £6,000 to £20,000 or more (indicative), which is why the W6 survey matters more there. GS Renovation prices the visible work, names the risks, and agrees anything additional in writing. The approvals do not change with age: building regulations compliance for any new drainage, extraction or notifiable electrics applies either way.
Can a wet room go into a small Hammersmith flat bathroom?
Yes. Wet rooms work well in tight W6 bathrooms because they remove the shower tray and use the whole floor. The key is full tanking and correct falls to the drain, which matters on the timber floors common in these terraces. We waterproof the space properly, upgrade the ventilation and drainage, and have any notifiable electrics certified by a registered electrician under Part P.
How long does a bathroom refit take in a Hammersmith flat?
Around 10 to 15 working days from strip-out to a finished room. In a Hammersmith flat the timetable also has to respect any working-hours rules the lease or managing agent sets, and the communal stairs are sheeted before anything is carried through. If yours is the only bathroom, the pan can often stay connected for much of the job, and the days without water are agreed in advance.
Why does the soil stack decide the layout of a Hammersmith flat bathroom?
Because every fitting drains into it, the toilet most of all. In a Hammersmith flat that vertical pipe also serves the homes stacked above and beneath, so moving it is not realistic. The pan needs a short, well-fallen connection, and the direction of the joists limits which way the pipes can travel. We draw the whole layout outward from the stack, then fit basin and shower around it.
Will a combi boiler give a good shower in my Hammersmith flat?
It can, within limits. A combi gives mains-pressure hot water but only at a set flow rate, so one good shower works well but two outlets at once may struggle. A large rainfall head can disappoint. In a flat without space for a cylinder, choosing the shower to suit the boiler matters more than the other way round.
What is usually under the floor of an old Hammersmith bathroom?
Often a record of every previous refit. In Hammersmith's pre-1919 houses, bathrooms were frequently added later, so joists may be notched for old pipework or softened by past leaks. Strip-out reveals the condition, and damaged joists are repaired before waste falls are set and the floor is boarded. Tanking and tiling follow.
Should a below-ground shower near Furnivall Gardens have protection against sewer backflow?
Yes, if it sits below the level of the street drain, wherever the house is. A shower or WC below ground can be where sewage backs up into the house when the sewer surcharges, a drainage risk rather than a river one. Near the river there is a second reason to plan for water, since two thirds of the borough is within a flood risk zone. The waste falls to a drain fitted with a non-return valve, or is pumped up, and that is decided before the floor goes down.
Does a bathroom refit in a listed Hammersmith building need consent?
Often, for the parts that touch the building. It is a criminal offence to carry out internal or external alterations to a listed building without Listed Building Consent, and almost 500 buildings in the borough are listed. New soil runs through floors, a vent through an outside wall or a partition moved to fit a shower all alter the building. A like-for-like swap of fittings may not, but confirm before stripping out.
Where can the soil pipe for a new bathroom run on a Hammersmith terraced house?
Usually inside the house or down the back, not across the front. 18% of Hammersmith homes are terraced houses, and a new bathroom is normally planned to join the existing stack at the rear. In a conservation area, and the borough's 44 cover about half of it, a new soil and vent pipe on a wall that fronts the street is not permitted development. So a bathroom at the front of the house is laid out with its waste running back through the floor, where the joists allow, rather than out through the front wall.
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