Do You Need Permission to Remove a Chimney?

People say remove the chimney and mean two things. The stack is the part you can see over the roofline, with its pots and cap. The breast is the part inside the house, the projection from the wall that held the fireplace and runs up through the bedrooms and loft. You can have one taken down and leave the other, and the rules differ.

Removing only the stack is mostly a roof job. The brickwork comes down to below the slope, the flue is closed off, and the gap is filled with new battens and tiles to match. The breast beneath then stays, with a cap that lets it breathe. Removing the breast too is structural work indoors, because the breast carries the stack above it and sometimes steadies the floors and walls beside it.

Checkatrade's October 2026 chimney removal guide gives around £260 to £340 per metre for a stack, about £1,800 for a whole project, and around £2,500 for a breast with the stack left. Those are a national yardstick only. Our page on chimney stack removal walks through the stack job.

Under section 55 of the Town and Country Planning Act 1990, works that leave the look of the outside of a building essentially unchanged are not counted as development at all. Whether taking a chimney off changes the look of a house enough to count is a judgement for the council, and a stack that frames a terrace is judged differently from one at the back of a bungalow.

Permitted development is the other route. Class C of the General Permitted Development Order covers other alterations to a roof, but its limits name chimneys, flues and soil pipes, so do not assume it settles your case. Flats and maisonettes have no permitted development rights of this kind, because the Order's word dwellinghouse excludes buildings containing flats.

Nothing lets you assume a chimney removal is exempt, so the safe step is a short email to the council's planning team before you commit. For a Crawley home that means Crawley Borough Council; elsewhere, use the council named for your town. File the council's reply with your house papers, since it can save questions when the home is sold.

A conservation area counts as article 2(3) land, where some permitted development rights are cut back. Class C itself has no article 2(3) exclusion, but an Article 4 direction can remove rights across a defined area, and the council can tell you whether one covers your road. A chimney on a street of matching rooflines is the kind of detail a conservation area exists to protect, so plan on asking first.

A listed home needs more care. Listed building consent is needed before anything alters the character that earned the building its listing, and the chimney stack is very often part of that character. Authorisation has to be in hand beforehand, so consent comes before the work, never after it, and a roofer cannot sort it out on the day. If the property is listed, put the question to the conservation officer before a roofer gets near it. Our page on chimney repairs on listed buildings covers like-for-like repair, which is treated differently from removal.

Inside the South Downs National Park, the National Park Authority itself handles planning for the parts of the Park that sit within Horsham, Mid Sussex, Lewes and Wealden. Building control there still stays with the district council.

The Planning Portal puts it plainly: Building Regulations approval is always needed when a chimney breast is taken out, since the breast is part of the building's structure. That is a separate approval from planning, and it covers the support that replaces the breast, usually a steel member or a bracket carrying the stack that stays above, plus the floors and walls around it.

You apply to your building control body. In Crawley that is Crawley Building Control, the council's own service. Other places differ, and each council's website names theirs. A structural engineer normally sizes the support, and the building control surveyor inspects it before it is covered up.

Two other points are worth settling early. If the flue served a gas appliance or a boiler, that appliance needs a safe route for its fumes before the flue is closed. And a shared stack on a semi or terrace involves your neighbour, who should hear about the plan early. For the paperwork on the breast, see our answer on chimney breast removal and Building Regulations. The chimney repairs hub shows how the roof side is dealt with. We cover the roof work; the structural calculations belong to an engineer.