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Chimney Breast Removal Hemel Hempstead

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.

A propped structural opening in a period terrace, carried out by GS Renovation, with the original timber lintel exposed
Acrow props on sole plates carry the floor while the original head is exposed. A Georgian terrace is visible beyond.

Sign off comes from Hertfordshire Building Control, not the council

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.

Written authority for demolition in the conservation area

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.

Stacks and flues on a frontage

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.

  • Flue capping with ventilation to keep the stack dry
  • Making good, plastering and reinstating the wall line
  • Skirting, cornice and picture rail matched back in
  • Building control notification and inspection sign-off
  • Ground floor removal with the upper stack fully supported
Service areaHemel Hempstead · HP1, HP2 and HP3
Local authorityDacorum Borough Council
Part ofHertfordshire · about 12 miles from our base
Typical homesNew Town corporation estate housing built neighbourhood by neighbourhood
Also covered nearbyBerkhamsted, St Albans, Harpenden, Watford and Rickmansworth

Why Hemel Hempstead Homeowners Choose GS Renovation

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.

  • Neighbours given notice before the noisy stages
  • Free, no-obligation quotations
  • Hearth and floor structure reinstated where the breast is removed
  • Roof, flashing and leadwork made good where a stack comes down
  • Materials priced at options, so you choose the finish
  • Straight advice on what is and is not worth spending money on
30+ YearsFounder's experience
Fully Insured5 year guarantee
4.9 / 531 MyBuilder reviews
Building ControlCompliant
Free QuotesNo obligation
Reviews

Rated 4.9 / 5 by our clients

★★★★★ 4.9 average from 31 verified reviews on MyBuilder

★★★★★
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…
archeryWaltham Cross · via MyBuilder
★★★★★
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…
manders_53St Albans · via MyBuilder
★★★★★
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…
desiree14189Harlow · via MyBuilder
Read all 31 reviews

FAQ

Frequently Asked Questions about Chimney Breast Removal Hemel Hempstead

How much should chimney breast removal in Hemel Hempstead cost?

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.

When does the inspector need to see the support before the ceiling is boarded?

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.

What happens to the roof where the stack was, in the Old Town?

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.

Can the stack be capped and left in place instead of taken down?

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.

Can the breast come out in the bedroom only, leaving the one downstairs?

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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