GS Renovation removes chimney breasts in Cheshunt houses, on one floor or through the full height. Whatever is left above has to be supported before anything below it comes out, so an engineer decides between gallows brackets and a steel beam first. You serve any coordinate the building control inspections.
Which Cheshunt houses still have breasts to remove
Older stock is where chimney breasts survive, and Cheshunt has a defined pocket of it rather than a spread. Only 15.1 per cent of the town's council tax properties were built before 1940, and 3.5 per cent before 1900. In the Cheshunt South area, 28.2 per cent predate 1940 and 16.6 per cent date from 1930 to 1939, the highest interwar share of the six Cheshunt areas.
Those figures come from the VOA council tax stock table at 31 March 2025. They show where older fabric is concentrated, not what is inside any one house. We survey the breast, the flue and the floors above before quoting, because a ground floor breast with two more above it is a different job from a single storey removal.
Flues with nothing left to do
A breast is worth removing once its flue no longer serves anything. At the 2021 census, 78.4 per cent of Cheshunt households had mains gas as their only form of central heating, which leaves original fireplace flues with no working purpose. Where a flue is redundant, the breast is floor area you are heating, paying for and not using.
Capping and ventilation still matter after it goes. Any stack that stays needs support, and any flue left in place needs ventilating so it does not trap moisture. Where the stack above is retained, it is carried on gallows brackets bolted into the party wall or on a steel beam, and the engineer's inspection decides which of the two is acceptable.
Breasts on a shared wall
A chimney breast on a party wall makes the removal your neighbour's business too. At the 2021 census, 65.8 per cent of households in the six Cheshunt middle layer super output areas lived in a terraced or semi-detached house, which means a shared party wall. Cutting into or bolting into that wall is notifiable under the Party Wall etc. Act 1996, so notice is served before we begin.
Where the two houses share the stack, your neighbour's flue is part of the same masonry. That is why the engineer inspects both sides of the arrangement where access allows, and why gallows brackets are never assumed to be acceptable until the wall itself has been checked and the load path is understood.
Building control and what it costs
Chimney breast removal is notifiable structural work, so an application goes in before it starts. Hertfordshire Building Control takes applications for Broxbourne work on 01438 879990 or at building.control@hertfordshirebc.co.uk, and applications can also be routed through the Planning Portal. The inspector wants to see the support arrangement before it is plastered over, so making good waits until that visit has happened.
Indicative costs run as follows. A chimney breast on one floor with gallows brackets accepted is £1,500 to £2,500, and £2,200 to £3,250 where a steel beam is needed. Two floors is £3,000 to £5,000. Those are indicative London ranges, MyBuilder and Checkatrade, 2026. Your quotation follows a site visit, and it is free with no obligation.
- Making good, plastering and reinstating the wall line
- Roof tiling, flashing and leadwork made good
- Flue capping with ventilation to keep the stack dry
- Gallows bracket support for a retained stack above
- Skirting, cornice and picture rail matched back in
Why Choose GS Renovation in Cheshunt
Chimney work turns on one decision, gallows brackets or a steel beam, and that decision is not ours to guess at. We appoint the engineer, serve the party wall notice on your neighbour, and hold the making good back until building control has seen the support. You get a written quotation before anything starts and the completion certificate at the end. Fully insured, rated 4.9 from 31 reviews on MyBuilder.
- Aftercare and snagging support once the job is finished
- Free, no-obligation quotations
- Party Wall Act notices served for stacks in a shared wall
- Cornice, skirting and picture rail matched back in
- Gallows brackets fixed only into sound party wall brickwork
- Paperwork and certificates handed over for when you sell