You may need planning permission if you are planning a larger extension. All extensions will need building regulations approval. An architect can assist with this and if planning permission is required. A reputable contractor will also be able to advise you if this is needed as well.
Llandeilo
Llandeilo is a community and neighborhood in Carmarthenshire, Wales, situated at the going across of the River Towy by the A483 on a 19th-century rock bridge. Its population was 1,795 at the 2011 Census. It is adjacent to the westernmost point of the Brecon Beacons National Park. The community is served by Llandeilo railway station on the Heart of Wales Line. A selecting ward in the same name exists. This ward stretches south from the confines of Llandeilo with a total population of 2,971. The community is bordered by the communities of: Manordeilo as well as Salem; Dyffryn Cennen; Llanfihangel Aberbythych; and also Llangathen, all being in Carmarthenshire.