Chimney Breast Removal Paddington

Once the breast is out, the flue left behind has to be capped at the top and ventilated at the bottom, or damp and stale air follow. That is the detail people forget. Across the converted stucco terraces of W2 near Little Venice we finish it properly: vent fitted, wall reinstated flush, plastered and ready for decoration.

In Paddington, 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 Paddington.

How the job runs

1. Free site survey at your Paddington 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 Westminster City 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 Paddington's period homes

Most of Paddington's period townhouses still carry their original chimney breasts, and in these tightly built W2 terraces the flues are usually shared through the party wall with the house next door. Because the breast helps support the masonry stack above, we always start with a structural engineer's assessment of exactly what the wall is holding up.

On the lower floors we support the retained stack on a steel beam bearing into the party wall, or on gallows brackets bolted into it only where the engineer and building control accept them. In these tall Victorian townhouses the stack often runs the full height of the building, in which case we more often remove the whole stack and make good the roof rather than leave it hanging.

Housing in Paddington

Roughly 11,790 dwellings sit on the valuation list for Paddington. 8% are houses and 92% flats, and by age 47% predate 1919, 11% are interwar and 42% post-war. Since most homes here are flats, a chimney breast in a flat in Paddington often supports the breasts in the flats above, so removal needs the freeholder's licence and designed support.

Chimney breasts in Paddington terraces and converted flats

In Paddington, 8% of homes are terraced houses and 0% are semi-detached or detached, so a house here is almost always part of a terrace. It has a party wall on at least one side, and on both unless it is an end house. A breast on a shared flank wall is in a party wall, and a Paddington house can have breasts on both sides, each carrying its own stack and each with a neighbour whose flues may share the same brickwork. Before we plan a removal, the flues on both sides are traced from the roof, because the stack above your breast may be one your neighbour still uses. Where breasts come out on both sides, each gets its own support design.

Flats are 92% of Paddington homes, and in a flat the stack matters even more. With 47% of homes here built before 1919, a breast in a converted townhouse flat can sit in a vertical run, where the breast in your flat supports the breasts in the flats above, owned by other people. Taking yours out means a beam carrying their masonry, so the design has to account for every floor above, and each owner above needs to know before work starts. We ask the freeholder early which flats still have working fireplaces, because a live flue above changes what can be removed below.

Party wall and building control in W2

As Paddington's terraces sit shoulder to shoulder, the chimney stack almost always lies within the shared party wall, so removing the breast or bearing a beam or brackets into it is notifiable under the Party Wall Act. You serve notice on the adjoining owner as building owner before any work begins, using the drawings we supply, which keeps relations with the neighbour straightforward.

The structural support is controlled under the Building Regulations rather than planning, and Westminster City Council's building control signs it off. We manage the lot: appointing the engineer who produces the 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.

Breast, stack and flue explained

Three words get used interchangeably and they mean different things, which matters when you are agreeing what is actually coming out. The breast is the block of brickwork projecting into the room. The flue is the shaft inside it that carried smoke. The stack is the part standing above the roof with the pots on it. A W2 townhouse may have four breasts in a vertical run, all feeding flues within one stack.

The distinction decides the scope. Removing a breast on one floor leaves the flue and stack above needing support. Removing the whole run from lower ground to roof means no support is needed, but the roof has to be made good. Removing the stack alone, leaving breasts in place, is occasionally done where the pots have become unsafe. We agree in writing which of these you are buying before the engineer is instructed, so there is no ambiguity later.

Doing it before you move in

The easiest chimney breast we ever take out is one in an empty flat. Nothing has to be covered, nothing has to be carried round, the dust goes nowhere that matters and the plaster dries out while you are still living somewhere else. If you are buying in Paddington and the survey has already flagged the breast you want gone, the window between completion and moving your furniture in is the cheapest time to do it.

It takes a little forward planning, because the engineer's visit and the approvals cannot really begin until you own the place, and that is the part with lead time attached rather than the building work itself. We will survey and have everything ready so work starts the week the keys change hands. In the converted W2 townhouses around Little Venice, where lifts are rare and the stairs are narrow, an empty flat also makes the waste route far quicker.

• Ceiling and joist support where the breast carried them
• Soot and debris contained with screens and sheeting
• Building control notification and inspection sign-off

VOA Council Tax stock of properties, March 2025, for Paddington & St George's Fields and Bayswater East. Counts rounded by the VOA.

If you are weighing up chimney breast removal in Paddington, it may help to read home renovation in Paddington, chimney breast removal across Westminster, how building control signs off a chimney breast removal, party walls and chimney breasts, our London chimney breast removal page and Building Regulations Explained.

The GS Renovation Difference in Paddington

Paddington homeowners choose GS Renovation because we treat chimney breast removal as the structural job it is. You get an engineer-designed support solution and Westminster building control handled end to end, tidy working in an occupied W2 home, and a fully certified, squared-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.