For an annexe to my house/flat?
An annexe provides more living space in a home and usually includes an extra bedroom. It can be an extension or a separate building.
Planning permission is required for the following:
- an annexe that will be in a separate building
- an annexe is proposed to a flat
Providing an annexe by extending my house
Planning permission may be required for an annexe that is an extension to the main house. This depends on whether the extra living space is ancillary to the house or independent to it. The examples below set out where the annexe would be:
- ancillary - does not need planning permission for the use
- independent - does needing planning permission for the use
An annexe that has a bedroom and a living room only and has internal access to the main house so that the occupier uses the kitchen and bathroom of the main house.
This is likely to be considered as ancillary to the main house and not require planning permission for the use.
- An annexe that provides a bedroom, living room, kitchen, bathroom, has its own separate entrance, garden and driveway would not be ancillary and would require planning permission for use as an annexe.
- An annexe that has an internal link to the main house and includes a number of bedrooms, possibly with a kitchen. These additional bedrooms could be converted to a kitchen/living room and bathroom and potentially become a separate residential unit. This would not be ancillary and would require planning permission for use as an annexe.
There are many variations between the examples given above of what people want in their annexe. We need to work out whether what is proposed is a separate unit of accommodation that could potentially be occupied, sold or leased separately to the house.
In addition to the question of whether the use as an annexe needs permission, planning permission may also be required for the proposed building, whether it be an extension or building in the garden separate to the house.
If you would like to know whether you need planning permission either for the building or use as an annexe you can submit a 'Do I need Planning Permission for…..?' enquiry to firstname.lastname@example.org fees for which can be found here.
If you already know planning permission is required and would like an opinion as whether it would be granted you can use our pre-application service:
Do I need planning permission?