Philippa's choice: SIDE-RETURN EXTENSION

Love Philippa’s side-return extension, but unsure about planning permission? Here’s what you need to know

- KAREN WILSON

Side-return extensions are a tried-and-tested way of reworking little-used outdoor space to create a bigger, more light-filled kitchen. Even just a couple of metres can make a big difference to the layout.

Do I need planning permission?

Since permitted development (PD) allows a single-storey structure up to 4m high, with a width of up to half the original house, many side-return extensions won’t require planning permission. However, if the extension is within 2m of the boundary, the eaves height will need to be under 3m. Even if PD does apply, it’s sensible to apply for a Lawful Development Certificate.

Are there exceptions?