Can you remove a chimney breast? Usually yes — but never casually. The breast supports the stack above it and, in most London terraces, sits on the party wall, so removal touches Building Regulations, the Party Wall etc. Act 1996 and sometimes planning. Here are the consents you need and the options compared.
The three consents to check
- Building Regulations — always required: the remaining masonry must be properly supported, with structural calculations
- Party wall notice — required when the breast is on or bonded to a shared wall, or you cut supports into it: see chimney breast removal and the Party Wall Act
- Planning permission — only where the external stack goes, in conservation areas or on listed buildings
Support options compared
Steel beams designed by an engineer are the robust default — required by most London councils for anything beyond minor removals. Gallows brackets are cheaper but only acceptable where strict conditions are met (sound stack, limited load, neighbour’s breast intact — a party wall issue in itself). Full stack removal, roof to ground, eliminates the load entirely but costs more and may need planning.
What it costs and what can go wrong
Ground or first-floor removal typically runs £1,500–£4,000 plus structural design; full stack removal more. The classic failure: removing one side of a shared stack leaves the neighbour’s breast unsupported — an instant dispute and exactly what a party wall award and schedule of condition prevent.
Planning a removal?
We serve the notices, agree the award and protect both properties. Call 0204 579 8270 or get a fixed quote.
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