Chimney breast removal with gallows bracket or beam support in Potters Bar. Trusted, professional, 30+ years' hands-on experience.
Removing a chimney breast frees up floor area on one or both floors, and it takes support away with it. GS Renovation removes breasts in Potters Bar to a structural engineer's design, whether that turns out to be gallows brackets or a steel beam. Indicative London ranges, MyBuilder and Checkatrade, 2026: one floor with gallows brackets accepted, £1,500 to £2,500; one floor where a steel beam is needed, £2,200 to £3,250; two floors, £3,000 to £5,000.

Building regulations approval. Hertfordshire Building Control names removing chimney breasts as a structural alteration to an existing building that needs it. Whatever is left above has to be supported or taken down as well, and that decision belongs to the engineer.
Hertfordshire Building Control states that structural calculations should be designed or checked by a Chartered Structural Engineer, MIStructE, and that an additional fee of £75 plus VAT may apply if its consultant engineers have to review them. Whether gallows brackets are accepted or a beam is required follows from that design, which is why we settle it before the price is fixed.
Changing one needs planning permission. An Article 4 Direction covering The Royds Conservation Area was confirmed in July 2015, and inside that area planning permission is required for changes to any chimney, including its removal. Hertsmere's Royds design guide asks owners to retain original chimney stacks and pots, and calls them a distinctive feature of the Hicks house designs. It states that proposals resulting in the loss of an original stack will not be supported.
There is a cost to the application now. Applications made because of the Royds Article 4 Direction were originally free of charge, but Hertsmere Borough Council states that the government removed that exemption on 17 January 2018 and a fee is now payable. For a Royds address, that is the first thing to check.
Because the conservation area documents single it out. The Royds appraisal lists tall brick chimney stacks among the typical features of the estate's houses. The same list includes Tuscan columns and oriel bay windows on the larger bungalettes, brick quoins, neo Tudor half timbered elements on front facing gable ends and peg tile roofs. The appraisal records the lowering of the original brick chimney stacks as one of the changes that has negatively affected the architectural cohesiveness of the estate.
Darkes Lane (West) tells the same story in render. There are sixteen two storey houses around the two private communal greens on Heath Drive, numbers 5 to 21 odd and 8 to 22 even. They share rendered walls, hipped concrete tile roofs, rendered chimney stacks, red tile window sills and central exposed brick porches. Taking the breast out internally while leaving the stack supported above is one route, and it is a structural decision as much as a visual one.
Two questions get answered before we quote, not after: what holds the stack up, and whether the change needs planning permission as well as building regulations approval. Inside the Royds the chimney itself is controlled, and everywhere the removal is a structural alteration requiring building regulations approval. We appoint the structural engineer, build to their design, and coordinate the application and inspections. Free, no obligation quotations, and GS Renovation Ltd is fully insured.
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FAQ
No, because everything foreseeable is on the quotation already. Chimney breast removal in 1930s and interwar housing around EN6 occasionally reveals something behind plaster, and when it does we stop, cost it, and get your agreement before continuing at the Potters Bar property. GS Renovation carries the same approach across Potters Bar. Quotes are free and carry no obligation, whether the EN6 property sits in Potters Bar or the wider Hertfordshire, and the written figure follows within days. 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.
Two areas are designated, and both have named boundaries. The Royds, designated in 2000, covers all the houses in Oakroyd and Elmroyd Avenue and Close, together with numbers 48 to 86 and 53 to 63 Baker Street. Potters Bar, Darkes Lane (West) covers The Avenue, Heath Drive, Manor Way and Mountway to the west of Darkes Lane. Whether a chimney is controlled turns on which of those two lists includes your address.
It is a separate question from planning permission, and it is asked of Hertsmere Borough Council. Hertsmere states that within conservation areas no building, or principal part of a building, can be demolished without first seeking conservation area consent, subject to certain exceptions. Where a stack is coming down rather than staying up, we put the demolition question to Hertsmere alongside the planning one rather than treating either as covered by the other.
Expect them to. Hertfordshire Building Control says a completion certificate will probably be required on the sale or a future sale of the property. It asks that the final inspection is booked within five days of completion, and issues the completion certificate at no extra cost after a satisfactory inspection. We keep the file open until the certificate is issued and hand it over with the rest of the paperwork.
It changes what the breast is carrying. The original Hicks brochure records five principal house types on the Royds estate, one of them detached semi bungalows with two or three rooms upstairs. Where rooms sit within the roof, floor and roof structure may bear near the stack, which is what the engineer inspects before deciding between gallows brackets and a beam. The house type is the starting point, not the answer.
No. The Royds appraisal records no listed buildings and no locally listed buildings within the conservation area, so listed building controls are not what applies there. Control comes from the conservation area designation and the Article 4 Direction over it instead. A house with no national designation of its own can still sit inside an area designation that controls what happens to its chimney.
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Free, no-obligation quote for chimney breast removal in Potters Bar. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.