Chimney Breast Removal Bishop's Stortford
Chimney breast removal with steel beam support in Bishop's Stortford, 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
Removing a chimney breast means supporting whatever is left above it, or taking the stack out completely, and proving that support to building control. We appoint the structural engineer for the calculations, whether the design uses a steel beam, or gallows brackets where the engineer accepts them. In the Bishop's Stortford Conservation Area there is a planning question first, and it is an unusual one. This page explains it.
For Bishop's Stortford, 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 Bishop's Stortford.
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 Bishop's Stortford 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.

Chimneys are the one thing the Bishop's Stortford direction controls wherever they sit
The householder Article 4 direction qualifies every withdrawn class with the words: to elevations or areas facing or visible from a highway, open space or waterway, except Class G. Class G is the installation, alteration or replacement of a chimney, flue or soil and vent pipe on a dwellinghouse.
Because Class G is carved out of that qualification, it is the single class withdrawn without the visibility test. It applies to a rear or hidden stack as much as to a front one. A chimney at the back of a house in the conservation area is not outside the direction simply because nobody can see it from the road.
Housing in Bishop's Stortford
The stock in Bishop's Stortford runs to roughly 20,560 dwellings, 20% of them flats and 79% houses, built 12% before 1919, 7% between 1919 and 1939 and 81% after 1945. A breast in a detached house in Bishop's Stortford needs building control but no party wall notice, and 30% of homes here are detached.
The council says the same in its own words, and the district plan sets the test
East Herts states on its conservation areas page that, with the exception of chimneys, works that would not be visible from the public realm are not affected by the Bishop's Stortford Article 4 directions. Chimneys are the stated exception, not an edge case somebody has read into the wording.
District Plan Policy HA4 supplies the test that is then applied. It states that development proposals, including minor development under an Article 4 direction, will be expected to preserve surviving architectural features identified as being significant to the character or appearance of the area.
The appraisal names chimneys as a feature it wants kept
It records that selected chimneys, windows and other architectural detailing could in some cases only be protected by removing permitted development rights through an Article 4 direction. Prominent chimneys with pots are described as a recurring character feature of the town's 19th and early 20th century houses.
The appraisal even records individual losses. At nos. 56 to 60 Warwick Road, described as three detached 20th century houses, it notes that the chimney has been removed from no. 56 while its two neighbours keep theirs. That level of detail is a fair warning about what an application here is judged against.
- Soot and debris contained with screens and sheeting
- Ventilated caps and airbricks to disused flues
- Full chimney stack removal and roof making good
VOA Council Tax stock of properties, March 2025, for all 5 statistical areas in Bishop's Stortford. Counts rounded by the VOA.
The GS Renovation Difference in Bishop's Stortford
A chimney breast removal in Bishop's Stortford is a planning question before it is a building one, because the chimney class in the Article 4 direction applies whether or not the stack can be seen from the road. That gets settled first. The structural route is then decided by the engineer we appoint: usually a steel beam on padstones, with gallows brackets only where the engineer and building control accept them. We build to those calculations, coordinate the building control application and the inspections, and make good afterwards. GS Renovation Ltd is fully insured, registered in England, company number 14611254, and rated 4.9 from 31 reviews on MyBuilder.
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…
He was very very good. He just got on with the job and we was beey pleased with the result. He Also cleaned everything away when he finished. Will…
Punctual, worked hard, and did exactly what he was asked and what he said he would do. Overall, a very high quality job. Will use again.
FAQ
Frequently Asked Questions about Chimney Breast Removal Bishop's Stortford
What drives the cost of chimney breast removal in a Bishop's Stortford home?
What sits behind the walls moves the price of chimney breast removal in Bishop's Stortford far more than the address does, within £2,200 to £3,250 for one floor on a beam (London-derived). In practice removing one floor or two decides the support, and that is only settled at the CM23 survey. Older Bishop's Stortford stock adds making good and awkward access adds labour, so both are itemised. Ring 07472 424 226 before comparing figures.
Can the breast come out on the ground floor with the stack above left alone?
Structurally yes, with the retained breast carried on a support the engineer designs. On the planning side the question narrows to whether anything happens to the chimney or the flue itself. Leaving the stack, the pots and the flue untouched keeps the work outside the Class G control, because that class bites on installation, alteration and replacement. Where the stack comes down as well, it is a different conversation with the council. We fix which of the two you want at survey.
The stack is shared with next door. What happens to their flue?
It has to stay supported, weathertight and working, and that is designed rather than improvised. A shared stack is a party structure, so notice under the Party Wall etc. Act 1996 comes before the work. The conservation area appraisal picks out tightly knit terraces such as Sidney Terrace, where houses share fabric of exactly this kind. The engineer we appoint designs the support for what remains, and the roof and flashing detail is agreed before anything is opened up.
Taking the stack down means patching the roof slope. Is that a separate control?
It can be. The householder direction withdraws Class C, any other alteration to the roof of a dwellinghouse, on elevations or areas facing or visible from a highway, open space or waterway. A patch on a front slope therefore raises a question that a patch on a hidden rear slope may not. Matching the slate or tile matters to how it is judged. We set out which slope is affected, and what the making good will look like, with the quotation.
You want a wood burner once the breast is out. Does the new flue need permission?
Assume it does until it has been checked. Class G covers the installation of a chimney or flue on a dwellinghouse, not only its removal, and the visibility limit that qualifies the other classes does not apply to it. A twin wall flue on a rear wall is caught by that wording as much as one on the front. The appliance and the flue also need building control involvement. Both are answered before the room is finished, not after.
Is a chimney breast removal notifiable, and who carries out the inspection?
Yes, because the support for whatever remains above has to be checked by someone independent. East Herts does not run its own building control service. It is delivered by Hertfordshire Building Control Limited, owned by East Herts with seven other Hertfordshire authorities, and staffed by 48 surveyors, 36 of them professionally qualified. We make the application and book the visit while the beam or brackets and their bearings are still visible.
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