In many families, there comes a time when we need to extend our homes. However, before we can go ahead with our plans, we need to know a few things about home extensions.

Is Planning Permission Needed?

Before you can start your work, you need to know whether planning permission will be required. It is not always necessary. As most extensions are under Permitted Development, commonly called PD.

What are PD Rules?

Bear in mind that extending a detached property by 8m on the rear is prohibited for storey extension. For doubles, the maximum is 3m. Single-storey buildings shouldn’t be higher than 4m on the ridge as well as the eaves. Remember that ridge height can’t exceed the original property.

• Two-storey extensions shouldn’t extend to less than 7m of the rear boundary
• For the single storey, side extensions mustn’t exceed 4m length. The width shouldn’t be over half the original
• Extensions to designated areas and side extensions demand planning permission
• All rear extensions are supposed to be a single storey
• No extension should lead to coverage of more than half of the garden

Permissions are significantly reduced on a conservation area or in a National Park.