Chimney Breast Removal Southwark

Approval under the building regulations is required for this work whether the house is a Georgian townhouse near Borough Market or a Victorian terrace out towards Peckham Rye. We make the application and book the inspections, and building control issues the completion certificate at the end. The steel supporting the retained stack is specified by a structural engineer.

In Southwark, 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 (indicative London ranges, MyBuilder and Checkatrade, 2026). GS Renovation Ltd, a building contractor based in Potters Bar, does the work in Southwark.

How the job runs

1. Free site survey at your Southwark address: which floors the breast runs through, a shared stack, any live flue.
2. The engineer we appoint designs the support, and the work is registered with Southwark Council building control or an approved inspector. On a shared wall you serve the party wall notice as building owner; we supply the drawings.
3. The floor above is propped and the breast comes down in courses from the top; what remains sits on the support the engineer specified.
4. Building control inspects the support before it is covered. We make good, and the completion certificate follows.

Removing a chimney breast in Southwark

Most of Southwark's period homes still carry their original chimney breasts, and in the borough's tightly packed Victorian and Georgian terraces the flues are shared with the neighbouring house through the party wall. Because the breast helps carry the masonry stack above, we begin every removal with a structural engineer assessing exactly what sits on top of it before anything is taken down.

On the lower floors the retained stack is usually carried on a steel beam on padstones designed by the engineer, with gallows brackets only where the engineer and building control accept them. In the taller SE21 and SE22 townhouses, where a stack runs the full height of the house, we more often remove the whole stack and make the roof good rather than leave a heavy stack to be carried on steel.

Housing in Southwark

Southwark's housing, as the Council Tax list records it, is about 149,990 homes: 19% houses, 81% flats, with 25% pre-1919, 7% interwar and 64% built since 1945. Post-war blocks in Southwark rarely have breasts, so one in a flat is checked by the engineer first, which matters here because most homes are flats.

Chimney stacks in Dulwich Village and along Tooley Street

Removing a breast inside the house is a building regulations job, but in Southwark's older conservation areas the stack above the roof is a separate question. The Dulwich Village Conservation Area was designated on 7 September 1968 and was one of the first to be designated in Southwark. In a conservation area, the stacks are part of the roofline seen from the street. If a removal plan includes taking the stack down below the roof, raise it with Southwark planning before the scaffold goes up, and keep the stack if there is any doubt.

Southwark's Tooley Street conservation area appraisal says further roof extensions and changes to the basic roof form are generally unacceptable. Taking a stack down alters the roofline, so treat it as covered by that sentence until Southwark planning says otherwise. For a flat or house near Tooley Street, the practical answer is usually to take the breast out inside and carry the retained stack on steel designed by the structural engineer we appoint. The roof stays as it is and needs no scaffold. A breast on the wall shared with next door is still notifiable work under the Party Wall Act, and you as building owner serve that notice.

Party wall and building control in Southwark

Because Southwark's terraces share a party wall, the chimney stack almost always sits within it, so removing the breast or bearing new steel into it is notifiable under the Party Wall Act. You serve the party wall notice as building owner (or your surveyor does); we give you the drawings and programme it needs and build to any award. In Bermondsey's converted warehouses the flues may sit differently, and any structural change there needs the freeholder's licence to alter.

The structural support is a Building Regulations matter, so Southwark Council's building control signs off the beam, or the brackets where they are accepted, not the planning department. We manage the lot: the engineer's assessment, safe removal and propping, capping and ventilating any redundant flue to prevent damp, and replastering so the room is left clean and level.

What we salvage and what gets recycled

A Victorian breast in a Peckham or Camberwell house is built from London stock bricks that are worth keeping. They clean up and are far better matched to the house than anything you can buy new, so we set aside the sound ones for reuse in the parting face, a garden wall or a future repair, and only the frogged rubbish goes for crushing. Cast iron fireplace inserts and stone surrounds are lifted out whole wherever the fixings allow.

The rest is segregated rather than mixed. Brick and mortar rubble, timber, metals and plasterboard all go to different streams, and plasterboard in particular cannot go to landfill mixed with general waste. We use licensed carriers and keep the transfer notes, which is the part of the duty of care most homeowners never see but which sits with you as well as with us. It costs nothing extra to do it properly on a job this size.

Measure the gain before you commit

A chimney breast in a Southwark terrace projects a few hundred millimetres into the room and takes a metre or so of wall width away with it. Written down like that it sounds small. The honest test is to mark the outline on the floor in masking tape, then put the wardrobe, the sofa or the bed roughly where you imagine it going and live with the tape for a week before deciding anything at all.

Owners are regularly surprised in both directions. In a narrow Peckham or Camberwell bedroom the gain is the difference between a double bed against the right wall and one jammed under the window, and it is obviously worth doing. In a large through reception near Dulwich Park it sometimes turns out the alcoves were more useful than the extra floor, and the money would be better spent on joinery instead. We would far rather you worked that out with a roll of tape than after the brickwork has gone.

• Hearth removal and floor structure reinstatement
• Gallows brackets only where the engineer and building control accept them
• Chimney breast removal on one floor or on every floor

VOA Council Tax stock of properties, March 2025, for all 34 statistical areas in Southwark. Counts rounded by the VOA.

If this is your first project in Southwark, these are worth a look: home renovation in Southwark, our Southwark area guide, how building control signs off a chimney breast removal, party walls and chimney breasts, how we handle chimney breast removal across London and Chimney Stack Repair.

Why Southwark Homeowners Choose GS Renovation

Southwark homeowners choose GS Renovation because we treat chimney breast removal as structural work, never a quick knock-out. You get an engineer-designed support solution and any freeholder consent handled, Southwark building control sign-off, tidy working in an occupied home and a signed-off result, backed by our founder's 30+ years on the tools.

Checked by Abdelaaziz Saaid, founder and director of GS Renovation Ltd (Companies House no. 14611254). Structural design is by the consulting engineer appointed to your project.