Chimney Breast Removal
in London.
Structural design to remove a chimney breast safely. One support design covers the breast through all floors — a second separate breast can be added at booking.
Turnaround
- Site visit within 3 working days
- Design package within 48 hours of visit
- Pay now, pick your slot in your portal
- Greater London coverage
£900
Per chimney breast — one support design covers all floors. A second separate breast is £1,300 in total.
What is a chimney breast removal?
Removing a chimney breast is structural work. Once a breast is taken out, the masonry left above it — including the stack in the roof — has to be properly supported.
Site visit and design: £900 per chimney breast. A structural engineer visits, designs the support (gallows brackets or a beam), produces the structural calculations, and provides everything Building Control needs to approve the work.
The price is per support design, not per floor. A chimney breast needs one support, fitted at the highest level you remove it from — and that one support carries everything above it, so the breast can come out on every floor below. Removing the breast from the second floor all the way down to the ground is still one design: £900.
One thing to plan for: it does not work the other way around. If you remove only the ground-floor section now, the support sits just above the ground floor — taking out the section on the floor above later means a second support and a second design. If you think you will ever want the full height gone, do it in one go.
A second, separate chimney breast is a second support. If your property has another breast or stack elsewhere — a different room, a different wall — that is its own design: £1,300 in total for both, covered in the same site visit. The diagram below shows the difference.
More complex work, such as a full stack removal or a chimney breast combined with wider alterations, is quoted before any design starts.
The design is the deliverable, sent as a PDF, so there is no separate report. You can hand it straight to your builder and Building Control.
Everything in the £900.
- Site visit by a structural engineer
- Support design per chimney breast (gallows brackets or a beam)
- Structural calculations
- Building Control submission support
- Delivered as a PDF, ready for your builder
Common situations.
- Removing a chimney breast on one floor or through several floors
- Opening up a room or reclaiming floor space
- Building Control requires calculations for the removal
- Your builder needs a support design before starting
Not sure if this is the right service?
020 8004 9060What’s not included.
- The removal work itself — this is the design package your builder works from; we can introduce trusted contractors
- Party wall agreements — if the breast sits on a wall shared with a neighbour one may be needed; the engineer will flag this at the visit
- Full stack removals or removals combined with wider alterations — these are quoted before any design starts
Common questions about
chimney breast removals.
Count the separate chimney breasts, not the floors. One breast running through several floors is still one breast — it needs one support design, so it is £900. A second, separate breast or stack somewhere else in the property is its own support design: £1,300 in total for both, covered in the same site visit. If you are not sure, book for one — the engineer will confirm on site and the price is adjusted if it turns out to be two.
You can, but it costs more in the long run. The support is designed at the highest level you remove the breast from. Take out only the ground-floor section and the support sits just above it — removing the floor above later needs a brand-new support and design. Remove from the top level down in one go, and a single design (£900) covers every floor below.
Yes. Removing a chimney breast is structural work and needs Building Control approval, which requires structural calculations and a support design. This package includes both.
£900 covers the site visit, the support design, the structural calculations, and Building Control support for one chimney breast, delivered as a PDF. A second separate breast brings the total to £1,300, covered in the same visit. More complex work — a full stack removal or a breast combined with wider alterations — is quoted before any design starts.
No — this is the design package: the drawings, calculations, and Building Control support your builder needs to do the work safely and legally. We don't carry out the removal itself, but if you'd like help pricing the building work we can introduce trusted contractors from our network.
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Ready to book your
chimney breast removal?
£900 fixed price. Site visit within 3 working days. Design package within 48 hours of visit.