Chimney Breast Removal Windsor

Removing a chimney breast frees floor space, and it also removes something that was carrying weight. Whatever is left above has to be supported, usually on a steel beam bearing on padstones, or on gallows brackets only where the engineer and building control accept them. That is the structural engineer's decision, and we appoint the engineer and build to the calculations issued. This page covers what a chimney breast removal in Windsor involves, including what the council charges to sign it off.

For Windsor, on London-derived ranges removing a breast on one floor typically costs £2,200 to £3,250 on a steel beam, and £3,000 to £5,000 across two floors; Berkshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Windsor.

How the job runs

1. Free site survey at your Windsor address: which floors the breast runs through, a shared stack, any live flue.
2. The engineer we appoint designs the support, and the work is registered with Royal Borough of Windsor and Maidenhead building control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
3. The floor above is propped and the breast comes down in courses from the top; what remains sits on the support the engineer specified.
4. Building control inspects the support before it is covered. We make good, and the completion certificate follows.

The Royal Borough charges a set fee to sign off a chimney breast removal

Chimney breast removal falls into the council's building control charge category C3, which covers structural alterations of a single beam or chimney breast removal. From 1 April 2026 that is £300.00 on a full plans application or £345.00 on a building notice, both inclusive of VAT. We make the application and book the inspections, and we tell you which route we intend to use before you accept a quotation.

If a breast was taken out without approval, there is a separate figure. The council's charge for regularising structural alterations of a single beam or chimney breast removal already carried out is £431.25 inclusive of VAT, under the same category. Regularisation means opening the work back up so it can be inspected. We survey and set out what that involves before you commit.

Housing in Windsor

Take the 16,960 or so homes the valuation list gives Windsor: 34% flats, 66% houses, 22% from before 1919, 8% interwar and 68% post-war. Terraced houses make up 30% of homes here, and a terrace breast in Windsor usually sits on the party wall, so removal needs a notice.

Which conservation area you are in changes the consent question

Four of the Royal Borough's 27 designated conservation areas are in Windsor: Windsor Town Centre, Inner Windsor, Trinity Place and Clarence Crescent, and Mill Lane covering Clewer Village. A removal that stops at ceiling level inside the house is one thing. Work that takes the stack down through the roof changes the outside of the building, and inside a conservation area that is a question to settle before the scaffold goes up.

The roofline is part of what those designations protect. The council's Inner Windsor appraisal records parapet divisions between dwellings on the terraced roofs of the area, with chimneys sitting along the roof slopes. We confirm with the council whether the external part of your job needs a planning application, and we put the answer in writing before we quote.

Houses at Dedworth Drive carry their chimneys in the middle of the roof

The Windsor Neighbourhood Plan design guide records the Dedworth Drive houses as red brick laid in stretcher bond, with steep pitched tiled roofs, hipped roofs and prominent central chimneys. A central stack in a hipped roof is supported differently from a stack on a party wall, and whatever remains above the removal still has to be held by something. Whether it goes on a steel beam, now the usual route since LABC withdrew its standard gallows bracket detail in 2024, or on gallows brackets where the engineer and building control accept them, is the engineer's call, made on the structure in front of them rather than on the house type. We open up, get it surveyed and then price the work that follows.

• Ground floor removal with the upper stack fully supported
• Flue capping with ventilation to keep the stack dry
• Full chimney stack removal and roof making good

VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Windsor. Counts rounded by the VOA.

People planning chimney breast removal in Windsor may also want home renovation in Windsor, chimney breast removal in Slough, builders across London, the Party Wall Act for a breast in a shared wall, how we handle chimney breast removal across London and Building Regulations Explained.

The GS Renovation Difference in Windsor

A chimney breast removal is two questions and we answer both before quoting. The first is structural: how what remains is carried, usually on a steel beam, or on gallows brackets only where the engineer and building control accept them. That is settled by the structural engineer we appoint, and we build to the calculations issued rather than deciding it on site. The second is consent, because taking a stack down through the roof of a house in one of Windsor's conservation areas changes the exterior. We coordinate the building control application and the inspections, and you have one point of contact throughout. GS Renovation Ltd is fully insured, and quotations are free and carry no obligation.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.