Chimney breast removal with gallows bracket or beam support in Hemel Hempstead. Trusted, professional, 30+ years' hands-on experience.
GS Renovation removes chimney breasts in Hemel Hempstead, on one floor or through the house, with whatever remains above properly supported. Nothing is cut until a structural engineer has designed that support, whether it is gallows brackets or a steel beam. We coordinate the building control side from the first notice to the final inspection.

Dacorum Borough Council does not run its own building control service. Building control for the borough is provided by Hertfordshire Building Control, contactable on 01438 879990. Removing a chimney breast is notifiable work, because you are taking out something that is carrying load and leaving the rest of the stack above it. The engineer's design and the inspections both run through that route, and we handle the application and the appointments.
Whether gallows brackets are accepted or a steel beam is required is not a decision we make on site. It follows from the engineer's assessment of the load above and the condition of the wall the brackets would fix back to. We price both routes at quotation stage, so the figure does not move once the design comes back.
It applies inside the conservation area boundary. In a Dacorum conservation area, written authority is needed to demolish or partly demolish a building larger than 115 cubic metres in volume, including some garden walls and chimneystacks. The Hemel Hempstead conservation area was originally designated on 7 October 1968, with an adopted boundary amendment on 21 January 2014, so the boundary is worth checking rather than assuming. Where a stack is coming down above roof level there, we establish the position with the council first.
Those need planning permission inside the conservation area. In the Hemel Hempstead conservation area, installing, altering or replacing a chimney, flue or soil vent pipe on a wall or roof slope that fronts a highway and forms the principal or side elevation requires planning permission. A breast removal that ends with the stack taken down and the roof made good changes what is visible from the street, so we raise it at survey rather than when the scaffold is already up.
On chimney work the sequence is planned before anything is broken out: engineer first, support designed, the stack above held, then demolition in stages from the top down. That order is what keeps a partial removal safe and keeps the rooms above intact. We are fully insured, we sheet and clean as we go in an occupied house, and you have one point of contact from survey through to the completion certificate. Quotations are free and carry no obligation.
Really happy with the quality of remedial works carried out by George in putting other previous tradesman work right. He was very helpful, honest and…
George is a very hard working builder, and has done a fantastic job on replacing my Bathroom. His attention to detail was great and I wouldn't…
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…
FAQ
Only a survey answers that honestly. Two Hemel Hempstead houses of the same size can differ once chimney breast removal is scoped, so we look at the HP1 property first, then price the structure, the trades and the Dacorum Borough Council approvals as separate lines you can compare. That written quotation is what GS Renovation stands behind across Hemel Hempstead and Berkhamsted. Nothing is owed for the HP1 survey if you decide against going ahead with chimney breast removal in Hemel Hempstead. 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.
Before it is covered, with the visit booked in advance. Hertfordshire Building Control requires commencement to be notified through the Submit a Plan portal before building work begins, and requires 24 hours notice for a final inspection. Brackets, bearings or a beam carrying the retained stack have to be visible when the inspector calls. We sequence the plastering and making good after that visit, so the completion paperwork is not waiting on a second appointment.
It is closed up in the covering that is already there. The character statement records handmade red clay tiles and natural slate as the roof coverings of the Old Town, so salvaged or matching materials are what the conservation team expects to see. Inside the conservation area, a roof alteration that would protrude more than 150mm beyond the plane of the original roof requires planning permission, which is worth checking where a new vent is proposed.
Yes, and it is a different scope from a full removal. A retained stack still bears on whatever is left below it, so the engineer designs that support either way, and the flue is capped and ventilated so the brickwork can dry. Dacorum Borough Council does not run its own building control service, so the work is inspected by Hertfordshire Building Control on 01438 879990, exactly as a full removal would be.
Yes, and it is the more straightforward of the two arrangements, because the breast below can carry the support. The engineer designs what holds the remaining stack, whether that is brackets fixed back to sound masonry or a beam, and nothing is cut until that design is issued. The work is notifiable, and Hertfordshire Building Control on 01438 879990 inspects it, since Dacorum does not run its own service.
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The same trusted team, 30+ years' hands-on experience and free, no-obligation quotes apply to every GS Renovation service in Hemel Hempstead. Explore what else we do locally:
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We carry out chimney breast removal across Hemel Hempstead and the surrounding areas. Explore a nearby location:
Free, no-obligation quote for chimney breast removal in Hemel Hempstead. Rated 4.9 from 31 reviews on MyBuilder, fully insured, and building control handled for you.