Annexes, often called Granny Annexes can be in detached outbuildings or added as extensions to existing properties. Granny Annexes are useful because they can provide vital, additional accommodation for an elderly relative or a younger member of the family who is still at home. The annexe or extension forms part of the original home boundary and ownership but may have a separate entrance.
While an outbuilding can sometimes be undertaken through permitted development, in many cases it will require planning permission. A permitted development extension or outbuilding will be limited by the scale, materials and use.
The important point to note is that whether you extend the original dwelling or add an additional building in the garden for occupation, you should seek either planning permission or a Lawfulness Development Certificate from the local planning authority.
The proposed use of an annexe is important in determining whether it is classed as ‘incidental’ or ‘ancillary’ use (just another room in the house or self-contained).
The definitions and arguments that determine whether an annexe is incidental or ancillary are complex, so obtaining professional advice before undertaking any work is vital.
At Plande, we assist with your annexe or outbuilding projects and can guide you through the process. We advise on options and limitations, as well as managing the application.
