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Bathroom Renovation Windsor

Luxury bathroom and wet-room refurbishment in Windsor. Trusted, professional, 30+ years' hands-on experience.

A bathroom is a small room with a great deal in it: drainage, water supply, ventilation, electrics, waterproofing and finish. Built in the wrong order, it gets opened up twice. We run it as one programme with one point of contact, and where the job moves a soil pipe, alters a floor or reaches into the roof, we deal with the approvals side too. This page covers what that involves for a Windsor property.

Bathroom renovation by GS Renovation, London
A full refit with a walk-in shower, fluted panelling and a freestanding bath.

Thames Water is the undertaker for both water and sewerage here

Thames Water is the statutory undertaker for both water supply and sewerage across the Royal Borough of Windsor and Maidenhead. That matters when a bathroom moves rather than being replaced where it stands. A new soil connection, a change to a below ground drain, or work close to a public sewer brings Thames Water into the job alongside the council. We check what the existing drainage does before we price a new layout, because the fall on a waste run is not negotiable.

In a listed building, a bathroom is more than a fit out

There are 177 individual properties and features listed within the Inner Windsor Conservation Area, forming 36 list entries. In the Trinity Place and Clarence Crescent Conservation Area there are 58 individual properties and features listed, forming 28 list entries, all at Grade II. That area is approximately 9.7 hectares in size and contains around 163 individual properties.

The Inner Windsor Conservation Area covers terraced rows on Sheet Street, Kings Road, Alexandra Road, Helena Road, St Mark's Road and Queen's Road, the villas and mews of Osborne Road, and the workers dwellings at Prince Consort Cottages. Where a property is listed, internal alterations can need consent in their own right, and that is settled before the first tile is ordered. We tell you which category your property falls into at survey, and we do not begin work that needs a consent nobody has applied for.

Where the bathroom sits in the house decides the difficult part

The council's appraisal describes buildings in the Trinity Place and Clarence Crescent area as three storeys in height, or two storeys with attics and basements. A bathroom two or three floors above the drain has a longer and less forgiving waste run, and the route it takes is a design decision rather than an afterthought. We set the pipework out before the room is stripped.

Occupancy affects it too. The Inner Windsor Conservation Area contains around 1,150 individual properties and over 1,500 individual address points, so a number of those buildings hold more than one address. Where a bathroom sits above or below someone else's rooms, access, noise, acoustic separation and the consequences of a leak all change how the work is planned. We agree that with you, and with whoever else is affected, before first fix starts.

  • En-suite creation in bedrooms and loft rooms
  • Niches, benches and recessed storage formed in the wet area
  • Bespoke vanity units and storage
  • Full plumbing, drainage and waterproofing (tanking)
  • Pressure and leak testing before any tiling starts
Service areaWindsor · SL4
Local authorityRoyal Borough of Windsor and Maidenhead
Part ofBerkshire · about 23 miles from our base
Typical homesGeorgian and Victorian townhouses with interwar and postwar suburbs
Also covered nearbySlough, Staines-upon-Thames, Maidenhead, Beaconsfield and Weybridge

Why Choose GS Renovation in Windsor

A bathroom goes wrong in the parts you cannot see: the fall on the waste, the tanking behind the tile, the extract that vents outside rather than into a void. We build those first and we do not cover them up before they have been checked. One point of contact runs the plumbing, the electrics, the tiling and the making good, and where the work is notifiable we coordinate the building control application and the inspection dates. Where the property is listed or sits in a conservation area, we settle the consent position before anything is stripped out. Quotations are free and without obligation, and GS Renovation Ltd is fully insured and registered in England, company number 14611254.

  • Site left safe and secure at the end of every day
  • Pipework pressure and leak tested before tiling starts
  • Structural engineer instructed and coordinated on your behalf
  • Materials priced at options, so you choose the finish
  • Full tanking behind tiles and across shower floors
  • Fully insured, with cover in place on every site
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

★★★★★
George was brilliant. Lovely bloke, very reasonably priced and a perfectionist to boot. He completed our small kitchen renovation with care and great…
OscarCrofton Park, London · 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
★★★★★
Very friendly and I am very pleased with the work he has done, also very clean worker and enthusiastic about his work. Can not fault this company!!!!…
natalie89391Stevenage · via MyBuilder
Read all 31 reviews

FAQ

Frequently Asked Questions about Bathroom Renovation Windsor

How do you price bathroom renovation in Windsor?

By surveying first and writing it down afterwards. A Windsor property is measured, the structure is confirmed, and the bathroom renovation scope is agreed before GS Renovation puts a figure to it. The quotation then splits into structure, services and finishes, with the Royal Borough of Windsor and Maidenhead fee visible rather than bundled. Homeowners around SL4 can hold us to it, because it is in writing. Ring 07472 424 226 or email info@gsrenovationltd.co.uk to book the SL4 visit. 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.

The bathroom has no outside wall. Where does the extractor vent?

Outside, and never into a loft or a void. The council's Inner Windsor appraisal describes the minor side streets as two storey terraces with narrow frontages, where an internal bathroom can sit a long way from any external wall. That means a duct run with as few bends as the plan allows, a fan sized for that length, and an agreed outlet position. We set the route before the ceiling is closed and tiling begins.

Can a shower room go in the cellar?

Yes, with a pumped waste, because the drain it discharges into sits above the new floor. Grove Road is described in the council's appraisal as a long terraced row of small dwellings with small basements, and cellars of that kind were not drained for sanitary ware. Tanking, ventilation and a power supply for the pump come with it. We check the drain invert level at survey before the room is designed.

Will an upstairs floor take a freestanding bath?

That is checked rather than assumed, because a filled bath with someone in it is a concentrated load. The council's Inner Windsor appraisal dates the dwellings on the minor streets to between the mid to late nineteenth century and the First World War, with rows such as Grove Road earlier. Joists of that age may already have been notched for earlier pipework. Where strengthening is needed, the structural engineer we appoint specifies it.

Will a shower on the top floor of a three storey house have enough pressure?

It depends on the system feeding it rather than on the address. The council's Inner Windsor appraisal describes dwellings on major streets such as Clarence Road, Frances Road and Kings Road as three storeys high with cellars. The run from the incoming main to a top floor bathroom is long, and the head above a gravity tank in the roof is short. An unvented cylinder or a pump answers it. We measure the existing flow first.

Every Service, One Team

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