video1.0<iframe src="https://www.loom.com/embed/05fec7ae1fe64c39a67af1badb031362" frameborder="0" width="1280" height="960" webkitallowfullscreen mozallowfullscreen allowfullscreen></iframe>9601280Loomhttps://www.loom.com9601280https://cdn.loom.com/sessions/thumbnails/05fec7ae1fe64c39a67af1badb031362-06776d37b44406b0.gif205.597This Loom explains the planning and building process for single storey extensions to the side or rear. For semi detached or terraced houses, extensions up to 3 meters into the garden fall under permitted development with no planning or fees, while side extensions are limited to 50% of the existing building. Going 3 to 6 meters into the garden requires prior notification with 21 days of neighbour consultation, taking about six weeks and costing approximately £325. Detached houses allow 4 meters into the garden and up to 8 meters with prior approval, and the director also covers building control submissions, typical steel calculation costs of £400 to £700, and drawing fees of £695 with an initial £235 deposit.