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Chimney breast removal cost: what it really costs in 2026
Ground floor to full stack.
£3,500 – £8,400
Removing a ground-floor chimney breast starts around £3,500. Both floors runs about £5,950, and the full stack including the roof section £8,400.
Price by spec
| Option | What it means | Typical price |
|---|---|---|
| Ground floor only | Breast out, upper supported | £3,500 |
| Both floors | Through the bedrooms too | £5,950 |
| Full stack | Including the roof chimney | £8,400 |
What actually happens
- Structural engineer designs the support (gallows brackets or steel)
- Building control notified; party wall notices if attached
- Rooms sheeted; breast taken down brick by brick
- Remaining masonry above supported permanently
- Floor and walls made good and plastered
- Roof patched or capped if the stack went too
Popular choices
Full removal for furniture wallsKeeping the stack, opening the recessMedia walls in the alcove space
Regulations to know
- This is structural work: engineer's calculations and building regulations approval are mandatory
- Shared chimneys on party walls need Party Wall Act agreement with the neighbour
- Leaving the upper stack unsupported is the classic cowboy shortcut — building control will check
Tips from the trade
- The engineer's design is a few hundred pounds; a dropped stack is a rebuilt house
- If the neighbour shares the stack, talk to them before the surveyor letters do
Plan this project properly
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Start planning on QomePrices on this page are approximate, region-adjusted guide figures built from cross-checked UK cost data. They exist to inform you, not to bind anyone. Actual prices are whatever you and your tradesperson agree, and a difference between a Qome guide figure and a real quote is not a fault in either.