Bathroom Renovation Chelsea

Bathroom and wet-room refurbishment in Chelsea, tanked, plumbed and tiled by one team.

GS Renovation refurbishes bathrooms and en-suites throughout Chelsea, in the Georgian and Regency townhouses around the King's Road. We handle the waterproofing, drainage, tiling and heating, creating wet rooms, walk-in showers and space-saving layouts that work within the tight footprints of the Royal Borough of Kensington and Chelsea's period homes.

In Chelsea, 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 Chelsea: we carry the tanking, plumbing and tiling as one contract, with the electrics certified by a registered electrician.

Price guide

WorkIndicative 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 Chelsea

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How the job runs

  1. Free design visit at your Chelsea home and an itemised quote.
  2. Strip-out, then first-fix plumbing and electrics.
  3. Tanking to the wet areas, then tiling.
  4. Sanitaryware and second fix, with notifiable electrics certified by a registered electrician. Typically 10 to 15 working days on site.
A bathroom fitted by GS Renovation with a panelled bath, wall-hung WC and a floating double vanity
Concealed cistern behind the tiled wall, wall-hung pan and a floating vanity, all set out to the tile grid.

Wet rooms and en-suites in Chelsea homes

Fitting bathrooms into Chelsea's tall, narrow townhouses often means carving en-suites out of bedrooms or converting boxrooms and landings on the upper floors. We plan space-saving layouts that make the most of awkward corners, sloping ceilings and chimney breasts, then tank and waterproof the area thoroughly before tiling. Proper drainage and mechanical ventilation are essential in these period houses, where the original construction was never designed for modern wet rooms and walk-in showers.

Waterproofing is the part you never see but always rely on. We tank walls and floors, lay reliable falls to the drainage, and seal every junction before a single tile goes on, which matters especially in SW3's multi-storey homes where a leak could affect the rooms below. Underfloor heating warms cold period floors, and considered tiling and lighting turn a compact space into a calm, hard-wearing bathroom that suits the house.

Housing in Chelsea

The stock in Chelsea runs to roughly 12,410 dwellings, 79% of them flats and 21% houses, built 57% before 1919, 11% between 1919 and 1939 and 31% after 1945. Where most homes are flats, a bathroom in a flat in Chelsea sits over a neighbour's ceiling, so it is tanked before tiling and a moved WC needs the freeholder's licence.

Keeping new bathroom pipework off Chelsea elevations

The waste route is the first design decision for a new bathroom in a Chelsea house or flat, because a new soil or waste pipe on an outside wall changes the elevation. The Chelsea Conservation Area comprises groups of generally modest residential terraces between Fulham Road and the King's Road, where rear walls are overlooked by neighbouring gardens and windows. A plastic pipe added down one of those walls is an external alteration, and in a flat, which does not benefit from permitted development rights, it can need planning permission as well as the freeholder's consent.

The borough also has over 4,000 listed buildings, and in a listed house new pipework through or on historic walls falls within what a listed building consent application covers. So the plan starts inside. Find where the existing soil stack runs, keep the new bathroom close enough for the waste to fall to it, and use the floor void where it allows a run to the stack. Where that is impossible, a small pumped unit may be the lesser evil, but agree the noise, the power supply and the access for servicing before choosing it.

Period bathroom challenges in Chelsea properties

The plumbing in older Chelsea townhouses is often a patchwork of past alterations, with long runs, low pressure and dated soil connections. When we renovate a bathroom we assess and upgrade the pipework, waste and, where needed, the water pressure, so the new suite performs properly. Working in listed and conservation-area homes across the Royal Borough of Kensington and Chelsea, we take care to protect original features and route new services discreetly.

New circuits and circuit changes near the bath or shower are notifiable, so extractor fans, lighting and heated elements are installed and certified by a registered electrician under Part P, or notified to building control. Where a Chelsea home is a converted flat within a larger townhouse, we also consider sound insulation and drainage shared with other units, and coordinate with managing agents where a lease requires it. Bathrooms do not need planning permission, though a listed property needs listed building consent where the work affects its character, which we check before we begin.

  • Underfloor heating and heated towel rails
  • Bespoke vanity units and storage
  • Downstairs cloakroom and WC installation
Service areaChelsea · SW3 and SW10
Local authorityThe Royal Borough of Kensington and Chelsea
Part ofCentral London (Inner London)
Typical homesGeorgian and Victorian townhouses near the King's Road, most of them now flats (79% of homes)
Housing stock57% built before 1919, 11% interwar, 31% post-war; 79% flats, 19% terraced, 1% semi-detached or detached
Also covered nearbySouth Kensington, Knightsbridge, Belgravia, Pimlico and Battersea

VOA Council Tax stock of properties, March 2025, for Chelsea Manor & Royal Hospital, Chelsea Riverside East and Chelsea Riverside West. Counts rounded by the VOA.

Why Chelsea Homeowners Choose GS Renovation

Chelsea homeowners choose GS Renovation because we get the hidden essentials right, the tanking, drainage and ventilation, as well as the finish. With our founder's 30+ years on the tools, we design space-saving en-suites and wet rooms, arrange electrics certified by a registered electrician, install underfloor heating, and work carefully in listed and occupied homes across the borough.

30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
Saiid did a complete refurbishment of our small bathroom. This involved ripping out the existing bath/shower, basin, toilet, pipework, and tiles and…
mr52782Barnet · via MyBuilder
★★★★★
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…
jessbeanWoodford Green · via MyBuilder
★★★★★
George always kept to commitments and arrived on time. He offered helpful suggestions during his initial visit and promptly provided a reasonably…
scomtottIslington, London · via MyBuilder
Read all 31 reviews

FAQ

Frequently Asked Questions about Bathroom Renovation Chelsea

What is included in your bathroom renovation price in Chelsea?

A GS Renovation price for bathroom renovation in Chelsea 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 SW3 property is flagged before starting rather than added later.

Can you fit an en-suite into a bedroom in my Chelsea townhouse?

Usually, yes. Chelsea's townhouses are tall and narrow, so we often create en-suites by borrowing space from a bedroom or converting a boxroom. The key is tanking the area fully, arranging proper drainage and ventilation, and routing the pipework sensibly. We arrange the electrics, certified by a registered electrician, and help with any listed building consent, delivering a compact, watertight en-suite that suits the period home.

How long does a bathroom renovation in a Chelsea home take?

A complete refit here runs 10 to 15 working days. Sequence governs it: clear the room, lay pipes and fix the gradient on the shower waste ahead of the tray, board, let the tanking cure, tile, and only then connect taps and sanitaryware. On an upper floor of a tall house, carrying materials up and waste down the stairs is part of that programme, and protecting the staircase comes first.

Why is the shower weak on the top floor of my Chelsea house?

Usually because it is fed by gravity from a tank in the roof, just above it. With so little height difference there is almost no pressure. A pump helps, but replacing the system with an unvented cylinder, or a combi for a smaller home, fixes the cause. The change reroutes pipework, so it is decided before first fix and the ceilings are closed.

Can a bathroom extractor vent through the wall of a listed Chelsea building?

Part F requires the extraction to be ducted to outside, but cutting a new hole through the external wall of a listed building needs listed building consent. So the route is planned with that in mind: sometimes along a ceiling void to an existing opening, sometimes up to the roof. It is settled with the Royal Borough of Kensington and Chelsea before the ceiling is closed.

Can the toilet move to a different wall in my Chelsea flat?

That depends on the route back to the communal stack, since the pan's outlet needs a continuous downhill run. Joists pointing along that route let the pipe hide in the floor; joists across it force a plinth or boxing. Relocating sanitaryware in a flat is normally something the lease reserves for the freeholder's written approval, and access to the stack connection may involve the flats above or below.

Can original bathroom fittings be removed from a listed Chelsea house?

Modern fittings, generally yes; original ones need checking first. Listing protects the whole building, inside and out, so a Victorian tiled floor, a panelled bath surround or original joinery in a bathroom may be part of what is protected. The borough has over 4,000 listed buildings. Photograph and record what is there, and ask the Royal Borough's conservation team before the strip out, because once historic fabric has gone into a skip the question cannot be reversed.

Can a level walk-in shower be formed in a post-war Chelsea flat?

Sometimes, but the floor decides it. Homes built after 1945 are 31% of Chelsea's stock, and where a block has concrete slab floors, a flush tray or wet room former cannot simply be sunk into the floor. Cutting a recess is structural work on the slab over the flat below, so it needs the engineer's check and the freeholder's consent, and may not be allowed. The fallbacks are a low-profile tray on a slightly raised floor, or a raised bathroom floor with a step at the door. Decide which before tiles and door heights are chosen.

Should old lead pipes be replaced during a Chelsea bathroom refit?

Yes, if any are found. In buildings from before 1919, which are 57% of Chelsea's homes, lead supply pipes can survive under floors and behind panelling even where the visible pipework is copper. With the bathroom floor up, trace the supply back towards the stopcock and replace any lead run within reach. Lead in a shared supply may belong to the freeholder or run through a neighbour's flat, so raise it with the managing agent rather than cutting in at the boundary.

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