Chimney Breast Removal Amersham

Removing a chimney breast means removing something the rest of the structure may be relying on. In Old Amersham it can also mean altering something the street can see, because the council's own appraisal treats the High Street's chimney stacks as part of its character. We appoint the engineer, build to the calculations, and coordinate building control.

For Amersham, 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; Buckinghamshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Amersham.

How the job runs

1. Free site survey at your Amersham 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 Buckinghamshire Council 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.

Chimney stacks are part of the Old Amersham street scene

The council says so directly. Its Old Town appraisal describes the High Street buildings as mainly Georgian, mostly two storey, with steeply pitched red tile roofs, dominating chimney stacks and mellow red brick walls. Where the stack is visible, what happens above the roof line matters as much as what happens below it.

The Amersham Old Town Conservation Area was designated in 1969 and its boundary was amended in 1992. The council's own conservation area leaflet records 151 listed buildings within it. If your property is listed, listed building consent is a separate matter from building regulations, and it has to be settled first.

Housing in Amersham

Amersham's housing, as the Council Tax list records it, is about 7,670 homes: 78% houses, 22% flats, with 11% pre-1919, 21% interwar and 68% built since 1945. A breast in a detached house in Amersham needs building control but no party wall notice, and 31% of homes here are detached.

The age of the fabric you are cutting into

Old Amersham's stock is old, and the figures are published. The Valuation Office Agency counts 3,250 dwellings in the Old Amersham area, of which 350 were built before 1900. In fabric of that age the breast may be doing more than carrying itself, so the engineer inspects and specifies the support before anything is taken down.

Support, calculations and building control

Whatever sits above the removed breast has to be carried, usually by a steel beam on padstones, or by gallows brackets only where the engineer and building control accept them, and that is the engineer's decision rather than ours. Buckinghamshire Council states that structural or architectural drawings and calculations must be submitted with a full plans building control application. We appoint the engineer, submit, and build to the specification.

Indicative London ranges, MyBuilder and Checkatrade, 2026, put a single floor removal at £2,200 to £3,250 on a steel beam, now the usual route, or £1,500 to £2,500 where gallows brackets are accepted. Two floors run at £3,000 to £5,000. Your own quotation is free and carries no obligation.

• Rubble bagged and carried out rather than dropped inside
• Flue capping with ventilation to keep the stack dry
• Hearth removal and floor structure reinstatement

VOA Council Tax stock of properties, March 2025, for Old Amersham and Amersham-on-the-Hill & Chesham Bois. Counts rounded by the VOA.

Useful next reading for a chimney breast removal project in Amersham: home renovation in Amersham, chimney breast removal in Chesham, how building control signs off a chimney breast removal, party walls and chimney breasts, our London chimney breast removal page and Building Regulations Explained.

The GS Renovation Difference in Amersham

A chimney breast is a structural element and, in the Old Town, a visible one. We do not guess at what carries the stack that remains. We appoint a structural engineer, work to the calculations, coordinate the Buckinghamshire Council application and inspections, and make good so the room reads as though the breast was never there. Fully insured, with free no obligation quotations.

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.