What types of basement conversion are there?

There are three main types: a half basement, which converts or extends a partially below-ground space such as an existing cellar; a garden basement, built out beneath the garden with lightwells or a sunken courtyard; and a full basement, excavated beneath the entire footprint of the house. The right option depends on your property, how much space you need and your budget. Our basement conversion process guide covers each in detail.