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Conservatory Planning Permission

Around 40% of conservatories will require a Planning Permission application. A conservatory is treated in exactly the same way as a normal domestic extension in terms of Planning Permission.

Planning Permission will be required for your proposed conservatory if any of the following conditions are met:

l. On designated land cladding of any part of the exterior of a dwelling (and extensions conservatories) with stone, artificial stone, pebble dash, render, timber, plastic or tiles is not permitted development. Designated land includes national parks, the Broads, Areas of Outstanding Natural Beauty, conservation areas and World Heritage Sites.

2. On designated land conservatories extending beyond any side wall of the original house are NOT permitted development.

3. Conservatories (including previous extensions) and other buildings must not exceed 50% of the total area of land around the original house.

The term 'original house' means the house as It was first built or as It stood on l July 1948 (if it was built before that date). You may not have built an extension to the house; a previous owner may have done so. Sheds and other Outbuildings must be included when calculated the above 50% limit.

4. Conservatories formed of the principal elevation or side elevation of the original house and fronting a highway are NOT permitted development.
5. Side conservatories must not have a width greater than half the width of the original house.
6. Side conservatories to be single storey with a maximum height of four metres.
7. If conservatory (at side or rear) falls within two metres of a boundary, the maximum eaves height should no higher than three metres to be permitted development.
8. Single-storey rear conservatory must not extend beyond the rear wall of the original house by more than three metres if an attached house or by four metres if a detached house.
9. Single-storey rear conservatory must not exceed a height of four metres.

10. Maximum eaves height should be no higher than the eaves of the existing house.
The highest part of the conservatory should be no higher than the roof ridge line of the existing house.

Sorce: Planning portal

Planning Information

Please read and print our Planning Permssion summary sheet PDF:

We would always advise that if you are unsure if your conservatory needs planning permission, that you contact your local Planning department and confirm if your new conservatory requires a planning application. Always remember to get the answer in writing.

Please click here to find out more about our design services.


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