Chimney breast removal with gallows bracket or beam support in High Wycombe. Trusted, professional, 30+ years' hands-on experience.
Removing a chimney breast means supporting whatever the breast was carrying, whether that is the stack above it, the floor joists bearing into it, or both. The support is either gallows brackets, where the remaining brickwork can take them, or a steel beam. The structural engineer we appoint decides which. This page covers the consent route for a chimney breast removal in High Wycombe.

Buckinghamshire Council runs its own building control service. The team covering the former Wycombe district area, which includes High Wycombe, can be reached on 01494 421 403.
Taking a breast out on one floor leaves the stack above it needing support, so the work is notifiable whichever method the engineer specifies. We make the application, appoint the engineer, and arrange for the opening and the support to be inspected before either is closed up. You get one point of contact for all of it.
Buckinghamshire Council states that where work has already been started or completed without approval, the route back is an application for a regularisation certificate. That is the application to make when a chimney breast has already gone and there is no certificate behind it.
An unsupported stack left in a loft is a structural problem and a conveyancing one at the same time. We can open up, have the engineer inspect what is carrying the remaining brickwork, install proper support where it is missing, and put the work to building control. Where the existing support proves adequate, the engineer's inspection is the evidence that goes with the application.
A chimney breast removal is a small structural job with a large downside if the stack above is left unsupported. We appoint the structural engineer, build to whether they call for gallows brackets or a steel beam, and never make that decision ourselves. The building control application for a High Wycombe address goes to Buckinghamshire Council's own building control service, and we make it, coordinate the inspections and hand you the certificate at the end. Where a breast has already gone without approval, we can pursue regularisation instead. GS Renovation Ltd is fully insured, registered in England, company number 14611254, and rated 4.9 from 31 reviews on MyBuilder.
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FAQ
Only a survey answers that honestly. Two High Wycombe houses of the same size can differ once chimney breast removal is scoped, so we look at the HP10 property first, then price the structure, the trades and the Buckinghamshire Council approvals as separate lines you can compare. That written quotation is what GS Renovation stands behind across High Wycombe and Beaconsfield. Nothing is owed for the HP10 survey if you decide against going ahead with chimney breast removal in High Wycombe. As a rough guide, chimney breast removal in London costs roughly £1,500 to £2,500 for a single floor where gallows brackets are accepted, or £2,200 to £3,250 where a steel beam is needed, which is the more common route now that LABC has withdrawn its standard gallows detail; two floors run £3,000 to £5,000 (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.
It can, because a stack above the roof is an external change and conservation area designation is a planning control. The High Wycombe Conservation Area was designated on 14 September 1970. Policy CP11 of the Wycombe District Local Plan commits the council to use Article 4 directions where the identified character of a conservation area is at risk from permitted development. We establish the designation and any direction covering the address before pricing.
It does not decide whether the breast can come out. The national planning register records AQMA No.2 (High Wycombe) over part of the town, which is an air quality designation the council monitors. Whether a replacement appliance can be installed, and on what terms, is a question for Buckinghamshire Council rather than something to assume. The removal itself is structural work, judged on how the retained stack is supported.
48 hours after Buckinghamshire Council has received the application and the payment. The council also requires at least 2 working days notice before you intend to start work. A chimney breast is a short job, so the notice period rather than the building is what sets the start date. We apply, pay the fee, give the notice, and book the scaffold and the skip around the date that follows.
Settle it with Buckinghamshire Council's online checker before anything is lifted. The checker returns whether the work needs building regulations approval, and whether the route is a full plans application, a building notice or a regularisation certificate. Where brickwork is cut into rather than taken out, the answer turns on what is carrying the load above the opening. We survey that first and have the engineer confirm it.
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Free, no-obligation quote for chimney breast removal in High Wycombe. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.