Homeowner Guide June 5, 2026 2 min read
Is My House in a Conservation Area? What It Means for Your Plans (2026)
How to check if your home is in a conservation area, what changes for extensions, trees, and demolition, and why it matters before you design.
The short answer
A conservation area is an area of special architectural or historic interest, designated by the local planning authority under the Planning (Listed Buildings and Conservation Areas) Act 1990. If your home is in one, the council controls change more tightly to protect the area's character. Several permitted development rights are reduced or removed, demolition and tree works are controlled, and the design bar for any application is higher. Being in a conservation area does not stop you extending or altering your home, but it changes what you can do without permission and how a proposal is judged.
You can check whether your property is in a conservation area on your council's website, usually on its interactive policies map. A Homeowner Planning Review confirms this and the other designations on your home for £249 before you design.
What changes inside a conservation area
- Reduced permitted development. Conservation areas are designated land (Article 2(3) land) under the General Permitted Development Order 2015. Side extensions, two-storey rear extensions, and roof enlargements such as dormers (Class B) are removed, and other rights are tightened.
- Article 4 directions. Many conservation areas carry an Article 4 direction that removes further rights, for example over windows, doors, cladding, or front boundary walls. Where one applies, work that would be permitted development elsewhere needs a planning application.
- Demolition is controlled. Demolishing an unlisted building, or a substantial part of one, in a conservation area generally needs planning permission.
- Trees are protected. You must give the council six weeks' written notice before most works to trees in a conservation area, giving it the chance to make a Tree Preservation Order.
- A higher design bar. National policy in the National Planning Policy Framework requires the council to give great weight to conserving the area's significance, so design, materials, and detailing matter more.
It is not the same as a listed building
A conservation area protects the character of an area. A listed building protects an individual building, inside and out, and needs listed building consent for most alterations. A property can be both: a listed building within a conservation area. The two regimes are separate, and a building can sit near a listed building without being listed itself, which still affects what is acceptable.
What you can usually still do
Plenty of work remains possible. Rear extensions within the standard permitted development limits are often still allowed, repairs and like-for-like maintenance usually need no permission, and sensitively designed alterations are frequently consented. The point is to design with the area's character in mind from the start, and to confirm which rights survive on your specific property before you commit.
Check before you design
Conservation area status, any Article 4 direction, and nearby listed buildings all shape what is realistic, and they are easy to miss. A Homeowner Planning Review checks them for £249 in 48 hours and explains what they mean for your plans. See also our guide to planning permission for extensions and permitted development rights explained.
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