Planning Permission in a Conservation Area

How living in a conservation area affects your planning rights, what extra restrictions apply, and how to navigate the planning process.

Conservation areas are designated by local councils to preserve and enhance areas of special architectural or historic interest. Living in one brings additional planning restrictions that you need to understand before carrying out any work.

What Is a Conservation Area?

A conservation area is an area of special architectural or historic interest, the character or appearance of which it is desirable to preserve or enhance. There are approximately 10,000 conservation areas in England, covering everything from historic town centres to Victorian suburbs and rural villages.

How It Affects Your Permitted Development Rights

In a conservation area, some permitted development rights are restricted or removed:

Side extensions - not permitted development; you need planning permission
Rear extensions of more than one storey - not permitted development
Cladding - stone, timber, tile or render cladding is not permitted development
Roof alterations - dormers on the principal or side elevations require permission
Satellite dishes - on a chimney, wall, or roof facing a highway: not permitted development
Outbuildings - between the side wall of the house and the boundary: not permitted development; also limited to 10 sqm total in designated areas

Rear extensions of a single storey and within the normal size limits remain permitted development in most conservation areas.

Additional Controls

Demolition

You need planning permission to demolish a building or structure (including walls over 1 metre high, or 2 metres if not next to a highway) within a conservation area. Demolition of an unlisted building in a conservation area requires planning permission from the council.

Trees

All trees in conservation areas are given a degree of protection. You must give the council 6 weeks' notice before carrying out any work on a tree (cutting down, pruning, topping, lopping). The council may respond by making a Tree Preservation Order (TPO) to protect the tree permanently.

Article 4 Directions

Many councils issue Article 4 Directions in conservation areas, removing additional permitted development rights. Common examples include requiring planning permission for:

Replacing windows (e.g. timber sash to UPVC)
Changing the front door
Altering boundary walls or railings
Painting the exterior a different colour
Installing solar panels on front-facing roof slopes

Check with your council whether any Article 4 Directions apply to your property.

Making a Planning Application

When you do need to apply for planning permission in a conservation area, the council will pay particular attention to:

Design quality - does the proposal preserve or enhance the character of the area?
Materials - appropriate materials that match or complement the existing buildings
Scale and proportions - is the development in keeping with the surrounding buildings?
Impact on views and setting - how does the proposal affect the overall character of the area?

Tips for Success

Speak to the conservation officer early - they can guide you on what is likely to be acceptable
Use traditional materials - timber windows, natural slate, matching brickwork
Respect the existing character - a sympathetic design that enhances the area is far more likely to be approved than one that contrasts dramatically
Prepare a thorough application - include a heritage statement explaining how your proposals preserve or enhance the conservation area
Look at what has been approved nearby - this gives you a sense of what the council considers acceptable