Chimney Breast Removal Cheshunt
Chimney breast removal with steel beam support in Cheshunt, the beam sized by the engineer we appoint and the work signed off by building control.
- Rated 4.9 from 31 reviews on MyBuilder
- Guide from £2,200 (London-derived)
- Free site survey, itemised quote
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 the structural engineer we appoint designs the support first: usually a steel beam on padstones, with gallows brackets only where the engineer and building control accept them. You serve any party wall notice as building owner, we give you the drawings and programme it needs, and we coordinate the building control inspections.
For Cheshunt, 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; Hertfordshire work generally runs below that. GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Cheshunt.
Price guide
| Work | Indicative range |
|---|---|
| One floor, steel beam (the usual route) | £2,200 to £3,250 |
| One floor, gallows brackets where the engineer and building control accept them | £1,500 to £2,500 |
| Two floors | £3,000 to £5,000 |
Indicative London ranges (MyBuilder and Checkatrade, 2026), not a quotation. Hertfordshire work generally runs below the London figures; your price follows a site visit. Prices checked September 2026. Full breakdown: Chimney Breast Removal Guide.
How the job runs
- Free site survey at your Cheshunt address: which floors the breast runs through, a shared stack, any live flue.
- The engineer we appoint designs the support, and the work is registered with Hertfordshire Building Control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
- The floor above is propped and the breast comes down in courses from the top; what remains sits on the support the engineer specified.
- Building control inspects the support before it is covered. We make good, and the completion certificate follows.

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.
Housing in Cheshunt
Count the homes in Cheshunt and you get about 18,660: 84% built since 1945, 9% between the wars and 6% before 1919, with flats at 25% and houses at 75%. Terraced houses make up 41% of homes here, and a terrace breast in Cheshunt usually sits on the party wall, so removal needs a notice.
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 a steel beam bearing onto padstones, or on gallows brackets bolted into the party wall only where the engineer and building control accept them.
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 you serve notice as building owner 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 supported on a steel beam, now the usual route since LABC withdrew its standard gallows detail in 2024, is £2,200 to £3,250, or £1,500 to £2,500 where gallows brackets are accepted. 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.
- Steel beam support on padstones for a retained stack above
- Programme planned around party wall notice periods for a shared stack
- Making good, plastering and reinstating the wall line
VOA Council Tax stock of properties, March 2025, for all 6 statistical areas in Cheshunt. Counts rounded by the VOA.
Why Choose GS Renovation in Cheshunt
Chimney work turns on one decision, a steel beam, or gallows brackets only where the engineer and building control accept them, and that decision is not ours to guess at. We appoint the engineer, give you the drawings you need to serve the party wall notice as building owner, 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.
Reviewed jobs near Cheshunt
3 MyBuilder reviews from Waltham Cross, with each customer's own job title:
- Kitchen Restoration, Waltham Cross, 7 Jan 2023 (5 out of 5)
- Kitchen refurbishment, Waltham Cross, 3 Sep 2021 (5 out of 5)
- Medium sized bathroom refurb, Waltham Cross, 9 Oct 2017 (5 out of 5)
Read all 31 on our reviews page.
We loved working with George and Ibrahim and would highly recommend them. They have done splendid job on our new kitchen refurb which including new…
What can I say!!! George is an extremely lovely man his workmanship is second to none, he has an excellent eye for detail and nothing was to much…
George did a great job on our new bathroom. He is a really friendly and helpful guy and always ready to discuss any issues or concerns and come up…
FAQ
Frequently Asked Questions about Chimney Breast Removal Cheshunt
How do you price chimney breast removal in Cheshunt?
The method for pricing chimney breast removal in Cheshunt is deliberately dull: measure, scope, itemise, then compare with £2,200 to £3,250 for one floor on a beam (London-derived). Nothing is quoted over the phone, because a blind figure changes later. GS Renovation allows for the post-war suburban construction at EN8 and prices Hertfordshire Building Control approval of the steel carrying the retained stack as its own line.
Do you need planning permission to take the stack down above the roof?
For a house outside a conservation area and not listed, taking a stack down is permitted development, so no planning application is needed. No Article 4 direction for Broxbourne is recorded on the national planning data register, but that register is incomplete, so we check the council's own Article 4 list for the address before relying on permitted development. Churchgate is the only Broxbourne conservation area inside the Cheshunt built-up area, and external changes there are controlled. Building regulations still apply, whichever side of that boundary the house sits.
Can a chimney breast be removed in a purpose built Cheshunt flat?
Only with the freeholder's consent, and with support for whatever remains above, because a breast in the flat above sits on the one being removed. At the 2021 census, 20.6 per cent of Cheshunt households lived in a purpose built block of flats. The lease governs alterations, the design has to account for the flat above, and building control inspects the support before it is covered. Access upstairs is arranged for the engineer's inspection.
Does taking out a chimney breast change the load on the foundations?
Yes. It removes a concentrated weight, and the breast has its own footing under it. The bedrock under every part of Cheshunt tested by the British Geological Survey is London Clay, which BGS calls very susceptible to volume change. Unloading part of a wall on shrinkable clay is a structural change, so the engineer looks at what stays as well as what goes, including the wall any retained support would bear on.
What paperwork proves a chimney breast was removed properly when you sell?
The completion certificate from Hertfordshire Building Control, the body that inspects Broxbourne work, together with the structural engineer's calculations for the support. A buyer's solicitor asks for both, and a removal with neither is a point raised in conveyancing. Where a party wall notice was served, the acknowledgement or award belongs in the same file. We hand that paperwork over at the end of the job.
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