Chimney Breast Removal Hammersmith and Fulham

A first-floor breast in a W6 or SW6 terrace takes up roughly 0.6 square metres, the difference between a wardrobe fitting and not fitting. Removing it, and the one below, opens both rooms up. We appoint the structural engineer, install the beam that carries the retained stack, and give you the drawings for the party wall notice you serve on the adjoining owner.

In Hammersmith and Fulham, 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 Hammersmith and Fulham.

How the job runs

1. Free site survey at your Hammersmith and Fulham 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 Hammersmith and Fulham 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 Hammersmith and Fulham

Most of the borough's bay-fronted terraces still carry their original chimney breasts in the reception rooms and bedrooms, and because the breast helps support the masonry stack above, it cannot simply be hacked out. We begin every job with a structural engineer's assessment of what is bearing on the breast, so the retained stack is never left unsupported once the lower section is gone.

On the lower floors the stack that remains goes onto a steel beam bearing on padstones, sized by the engineer we appoint; gallows brackets are used only where the engineer and building control both accept them. In many W12 and SW6 houses where the stack runs full height and the flues are long redundant, we more often remove the whole stack and make good the roof, which frees floor space on every level.

Housing in Hammersmith and Fulham

About 95,080 homes are listed for Hammersmith and Fulham, and the mix is 23% houses to 77% flats, with 34% built after 1945, 9% in 1919 to 1939 and 56% earlier. Since most homes here are flats, a chimney breast in a flat in Hammersmith and Fulham often supports the breasts in the flats above, so removal needs the freeholder's licence and designed support.

Chimney stacks and the roofline in Hammersmith and Fulham

Removing a breast inside the house is building regulations work. Taking the stack down above the roof is a different decision, because it changes a roofline that neighbours and the street can see. Hammersmith and Fulham has 44 conservation areas covering about half of the borough, and on a terrace where every house has kept its stacks, one missing stack interrupts a repeated pattern. So before any stack comes down to roof level we check whether the address sits in a conservation area, and where it does we treat the stack as a possible planning matter and ask the council before scaffold goes up.

The option that avoids the question is to leave the stack in place and carry it on steel inside the house. The street elevation stays exactly as it was, and outside a listed building what remains is the party wall and building control side. Hammersmith and Fulham Council's planning guidance strongly recommends following the Party Wall Act 1996 before starting any work affecting party walls, and a breast built against the party wall is that kind of work. Any notice you serve as building owner should include the engineer's drawing of the retained stack, so the adjoining owner can see how the shared masonry above is carried.

Party wall and building control in W6

Across Fulham, Hammersmith and Shepherd's Bush the terraces are built wall-to-wall, so the chimney stack almost always sits within the party wall shared with the house next door. Removing the breast or cutting a beam bearing into that shared wall is notifiable under the Party Wall Act, so you serve notice on the neighbour before any work begins.

The structural support is notifiable under the Building Regulations, and Hammersmith and Fulham Council's building control signs off the beam, not the planning department. We coordinate the lot: the engineer's calculations, safe removal and propping, capping any redundant flue with ventilation to prevent damp, and replastering so there is no trace the breast was ever there.

Back-to-back flues and the neighbour's side

In the borough's terraces the stack is usually shared, with your flues and next door's rising back to back in the same block of brickwork. That matters when a breast comes out, because the party wall between the two sets of flues can be as little as a half brick, and a careless demolition breaks through into a flue that is still in use on the other side and belongs to someone else entirely.

The consequence is not theoretical. A hole into a working flue lets smoke or, worse, combustion products from a neighbour's gas appliance find their way into your rooms. We take the brickwork back to the withes carefully, seal any breach in a shared flue with solid masonry rather than expanding foam, and check from the loft that what is left is intact. If a flue on either side is still live, the engineer's detail allows for it and the neighbour is told what we found.

Getting the room ready before we arrive

The week before we start is yours, and what you do with it decides how smoothly the job runs. The room wants to be genuinely empty rather than cleared to one side: furniture out, pictures off the walls of the adjoining rooms as well as this one, curtains and blinds down, and anything fragile elsewhere in the house moved away from the shared walls, because breaking out brickwork carries vibration further than people expect.

Carpet is worth lifting yourself if you intend to keep it, since it will not survive being rolled against a wall under brick dust. Tell us about a cat that bolts, a shift worker sleeping in the day, or a home office that cannot be moved, and we plan around it. In the borough's converted flats we also ask you to warn whoever lives below, because the noise travels down through the structure far more than it travels sideways.

• Making good, plastering and reinstating the wall line
• Flue capping with ventilation to keep the stack dry
• Soot and debris contained with screens and sheeting

VOA Council Tax stock of properties, March 2025, for all 25 statistical areas in Hammersmith and Fulham. Counts rounded by the VOA.

Once the chimney breast removal work in Hammersmith and Fulham is scoped, people usually go on to read home renovation in Hammersmith and Fulham, our Hammersmith and Fulham area guide, builders across London, party walls and chimney breasts, chimney breast removal anywhere in London and Chimney Stack Repair.

Why Hammersmith and Fulham Homeowners Choose GS Renovation

Hammersmith and Fulham homeowners choose GS Renovation because we treat chimney breast removal as the structural job it is. You get a steel beam designed by the engineer we appoint, building control handled end to end, the drawings your party wall notice needs, tidy working in an occupied W6 or SW6 home, and a replastered result signed off by building control, 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.