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.
Pentre
Pentre is a town, neighborhood as well as electoral ward near Treorchy in the Rhondda valley, dropping within the area district of Rhondda Cynon Taf, Wales. The town's name is taken from the Welsh word Pentref, which equates as homestead, though Pentre is called after a big farm that controlled the area prior to the resulting industrialisation. The area takes in the adjoining town of Ton Pentre. Two of one of the most notable organisations to have actually existed in the Rhondda were both developed in Pentre; the Pentre Breweries and also the Rhondda Engine Works. Population 5,232 (2011 ).