Any wall above one metre height beside a public road or two metres high free-standing requires planning permission. For a robust and sturdy garden wall, the foundations should not be deeper than 30cm (12 inch). A raised bed with plants at the foot of an unsightly wall may help hide it. Garden walls may hold back soil to create a terraced area or prevent a steeply sloping bank from falling. Building rules do not apply to fences, walls, or gates. Despite the lack of building regulations, the structures must be sturdy and well-maintained. Natural stone is by far the most expensive option, with prices varied by region. The materials used to create your house, as well as the materials used in nearby buildings and walls, are other factors to consider. If you select a design, be sure you have the proper mortar on available. To build a brick building, you'll need to practice cutting bricks.