Proximity to Highways

You will need to apply for Planning Permission to add a conservatory to your house in the following circumstances.

You want to build a conservatory, which would be nearer to any highway than the nearest part of the "original house", unless there would be at least 20 metres between your house (as extended) and the highway. The term "highway" includes all public roads, footpaths, bridleways and byways.

Height Limits

You will need to apply for Planning Permission before adding a conservatory to your house if:

The conservatory will be higher than the highest part of the roof of the "original house": or Any part of the extension is more than 4 Metres high and is within 2 metres of the boundary of your property.

You should measure the height of the buildings from the ground level immediately next to it. If the ground is uneven, you should measure from the highest part of the surface.

Volume Limits for Conservatories

You will need to apply for Planning Permission before building a conservatory if:

For a terraced house (including and end of terrace house) or any house in a Conservation Area, National Park or an area of outstanding beauty if the volume of the "original house" will be increased by more than 10% of 50 cubic metres (whichever is the greater).

For any other type of house outside those areas if the volume of the house will be increased by more than 15% or 70 cubic metres (whichever is the greater); and in any case if the volume of the "original house" will be increased by more than 115 cubic metres.

Volume is calculated from external measurements.

If your property has previous extensions or additions their respective volumes will have to be taken into account on the calculations. In simple terms this means that if you have an existing extension that accounts for 25 cubic metres then that figure will come off your permitted development availability before the conservatory volume is calculated.
 

'The Way Forward'

Van Dukes Conservatories has a great depth of experience and knowledge on these important planning issues and the best way forward would be to take advantage of our free consultation process, now by going to the contact page and getting in touch.
 
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