In many cases planning permission will not be required for a conservatory, however if your house is a listed building or you are in a conservation area then you will need to apply. If it is required we will handle this for you by preparing the plans, completing the application, and corresponding with the local authority where necessary.

The following points can be used as a general guide, however if you are at all unsure please contact us.

Under present legislation, you will NOT need to apply if:

1.) Detached and semi-detached houses
The conservatory does not increase the overall volume of the original house by whichever is the greater - 70 cubic metres or 15% of the volume up to a maximum of 115 cubic metres. (Scotland has its own regulations on this.)

1a.) Terraced or end-of-terraced houses
The conservatory does not increase the overall volume of the original house by whichever is the greater - 50 cubic metres or 10% of the volume up to a maximum of 115 cubic metres.

The wording 'original house' means the house as it was first built or as it stood on 1st July 1948 if it was built before then. If extensions have been built since, then those extensions count against the allowance.

2.) No part of the conservatory projects further forward than the existing front wall or higher than the highest point of your roof line.

3.) No part of your conservatory comes within 2 metres of your boundary if its more than 4 metres above the ground.

4.) It does not cover more than half of the original garden area.

Neither can it be used as a separate, independent dwelling.

© Castle Conservatories Ltd 2006
Castle Conservatories Ltd, 48 Kingsley Road, Northampton, NN2 7BL
Company Registration Number: 5486414          With thanks to Discus Group