Luxury bathroom and wet-room refurbishment in St John's Wood. Trusted, professional, 30+ years' hands-on experience.
GS Renovation refurbishes bathrooms across St John's Wood, from en-suites in NW8 mansion flats to family bathrooms in the area's bay-fronted Victorian and Edwardian terraces. With more than 30 years in Westminster, we handle the waterproofing, drainage, tiling, heating and fit-out so a period bathroom is dry, warm and properly finished for years.

The bathrooms in a St John's Wood terrace are often tucked into the rear closet wing or carved out of a former bedroom, where solid walls, timber floors and older drainage make leaks a real risk. We tank and waterproof the wet areas properly before any tile goes down, so moisture cannot track into the structure below. Getting the falls, the drainage and the mechanical ventilation right is what keeps a period bathroom sound.
Walk-in showers and full wet rooms are popular here, but they demand a fully tanked floor and walls and a reliable fall to the drain, especially over a suspended timber floor. We form the substrate, tank it, then tile in stone, porcelain or mosaic and add underfloor heating to counter the chill of a period property. Ventilation is sized to clear moisture so the finish lasts rather than blackening at the edges within a year.
Space is tight in St John's Wood period homes, so we plan bathrooms and en-suites to make the most of an awkward footprint, borrowing from a landing, a closet wing or a chimney recess to fit a shower, basin and WC without it feeling cramped. Careful setting-out of the drainage runs and the layout means the fittings sit where they work, not just where the old pipes happened to run.
In the mansion flats around NW8, a leaking bathroom affects the flat below, so waterproofing, sound insulation and the freeholder's rules on wet works all matter, and the managing agent will usually need to agree the works first. We tank thoroughly, upgrade the drainage and ventilation, and finish with tiling, underfloor heating and the fittings you choose. One team runs the plumbing, electrics and tiling so the bathroom is watertight and complete.
St John's Wood homeowners choose GS Renovation because a bathroom in a period home lives or dies on the waterproofing beneath the tiles, and we get that right first. With 30+ years in NW8 terraces and mansion flats, we tank properly, sort drainage and ventilation, handle leasehold wet-works rules, and finish with tiling, underfloor heating and fittings that last.
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…
Really happy with the quality of remedial works carried out by George in putting other previous tradesman work right. He was very helpful, honest and…
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
FAQ
Fixed pricing is the default here, not the exception. What prevents it on a bathroom renovation job is real uncertainty about the structure at the NW8 address, and in that case GS Renovation says so and prices the investigation first. St John's Wood homeowners then decide with the facts in front of them. Ring 07472 424 226 and we will explain which applies to your bay-fronted Victorian terraced property. The NW8 survey costs a St John's Wood homeowner nothing, in Westminster or beyond. As a rough guide, bathroom renovation in London ranges from roughly £6,000 to £20,000 or more (indicative London ranges, MyBuilder and Checkatrade, 2026). Your figure depends on the size, specification and condition of the property, which is why we survey before quoting.
That is how we work, and it is deliberate. Splitting a crew across St John's Wood jobs makes every one of them late, so bathroom renovation at an NW8 address is resourced properly from the first day to the certificate from Westminster City Council. GS Renovation would rather start you two weeks later than leave a house open. Ask our Westminster references about it. Ring 07472 424 226 and we will confirm what else is running in St John's Wood or Marylebone.
The same person throughout, and you will have their direct number. They own the bathroom renovation programme for your St John's Wood home, agree any variation in writing before it happens at NW8, and provide the weekly update. GS Renovation does not rotate managers mid-project. Where a structural engineer is required they are appointed and coordinated by that manager too. Ask for Westminster references and check it. Ring 07472 424 226 and GS Renovation will name the NW8 manager for St John's Wood.
The freeholder's, almost always, plus building regulations for the electrics and drainage. Tanking and correct falls matter more in a flat, because the consequence of getting it wrong lands on the property below. We agree the specification with the managing agent before starting at NW8.
We can, and we would tell you early if we could not. Bathroom renovation in Edwardian bay-fronted houses with generous ceiling heights and long rear gardens occasionally runs into a structure that will not do what the owner hoped, and finding that out at the NW8 survey is far better than on site. GS Renovation is honest about it before a St John's Wood client commits. The visit is free either way. Westminster City Council building control is coordinated by GS Renovation on every bathroom renovation project in Westminster.
The key is proper tanking. In a St John's Wood terrace the bathroom often sits over a suspended timber floor, so we form a solid substrate, fully waterproof the floor and walls, and build in a reliable fall to the drain before tiling. We also fit adequate mechanical ventilation. Together these keep moisture out of the structure and stop the leaks older period bathrooms are prone to.
Every part, houses and flats alike. GS Renovation works across St John's Wood and the NW8 area and much of Central London, so bathroom renovation at your NW8 address is straightforward to service. The constraint is capacity rather than geography. Call 07472 424 226 early if the Westminster project has a deadline attached. We will tell a St John's Wood homeowner honestly when the next slot is. Small jobs are as welcome as large ones here, and the written quotation follows within days.
Every Service, One Team
The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in St John's Wood. Explore what else we do locally:
Same Service, Nearby Areas
We carry out bathroom renovation across St John's Wood and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for bathroom renovation in St John's Wood. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.