Conservation areas

Can you alter or remove a chimney in a conservation area?

Plain re-roofing keeps its permitted development in a conservation area, but a chimney is treated differently. Here is what to ask, who to ask, and how to check.

The short answer

Not without asking the council first. The permitted development rule for roof alterations, Class C, does not cover work that consists of or includes altering or replacing a chimney, wherever the house stands. A conservation area then adds Article 4 directions that can take further rights away, and a listed home needs listed building consent for work touching its character.

4 min read · Part of Chimney repairs

A hipped red-tile roof on a white-rendered bungalow — A row of brick stacks above a terrace

What a conservation area changes for a roof

A conservation area is article 2(3) land under the permitted development order. That status takes Class B, the dormer class, out of play, so a dormer in the area has to go through planning. It does not remove Class C, which covers other alterations to a roof, and that is why ordinary re-roofing is normally still permitted development inside the boundary.

Two things can still tighten the position. The first is an Article 4 direction, which GOV.UK describes as a direction under article 4 of the order letting the Secretary of State or the local planning authority withdraw specified permitted development rights over a defined area. The second is the home itself: a listed building follows its own consent rules, set out below.

Chimneys sit awkwardly in all this because Class C has an exclusion of its own. It stops short of any roof alteration that involves a chimney, flue or soil and vent pipe being put in, changed or replaced. So the chimney question does not begin with the conservation area at all. The conservation area is a second reason to ask, on top of the chimney rule itself.

Which council to ask and what it publishes

The district council decides, and each one publishes something different, so check the right one for your address.

Conservation area information by council
Council	What it publishes
Folkestone & Hythe	An interactive map; no count given
Dover	57 conservation areas; Article 4 areas named on its heritage page
Canterbury	97 conservation areas; Article 4 areas on a map
Ashford	43 conservation areas, on an interactive map
Rother (Rye and Camber)	Check with Rother District Council

None of these pages says what a given Article 4 direction removes for chimneys, so the council has to tell you for your street. Send a short email with a photograph of the stack and your postcode, and ask whether the property is in a conservation area or under an Article 4 direction, and whether the job you are planning needs planning permission.

Keep the reply. It is the record you will want if the house is sold. If a neighbour shares the stack, tell them what the council said, since the work may reach their side.

Listed homes and shared rules

Listed homes keep Classes B and C, yet section 7 also requires listed building consent for works in any manner which would affect its character as a building of special architectural or historic interest. That is the wording of section 7 of the Planning (Listed Buildings and Conservation Areas) Act 1990. A chimney stack helps give such a house its outline, so taking one down or changing its pots is the sort of change that consent covers. Canterbury City Council puts it directly: you will need listed building consent for any changes which affect the building's character.

Do not assume that like for like means exempt. If your home is listed, tell the council what is on the roof before you decide what to repair, and ask whether the repair needs consent. Written confirmation from the council is worth having before scaffolding goes up, because it is far easier to ask before the work than to put a stack back afterwards.

Flats and maisonettes have no permitted development rights at all, so a chimney serving a flat goes to the council whatever the area. Our planning permission guide sets out the wider rules, and the page on chimney breast removal covers the Building Regulations side.

What we put in writing for the council

When a chimney job might need the council's say, the survey gives you what the council needs to answer quickly. The council makes the planning decision, so the aim is a clear note, not a guess.

The survey note covers:

photographs of the stack from the roof, the pots and the flashing
what is wrong with the stack, in plain words
whether the work puts back what is there or changes its height, shape or pots
whether the stack stands on a party wall, which brings in a neighbour's notice

Repairs that leave the stack as it stands are a different question from altering or removing it, and the planning team can confirm which one yours is. Where the answer is that no permission is needed, we go ahead on the written price you agreed, and the survey photographs go in your file. Where permission is needed, nothing starts until it is in your hands, and the written quote reflects the route chosen. See stack rebuilds if the stack must come down, and our chimney repairs page for the rest.