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.
Winscombe
Winscombe is a large village in North Somerset, England, close to the settlements of Axbridge and also Cheddar, on the western side of the Mendip Hills, 7 miles (11 kilometres) southeast of Weston-super-Mare and 14 miles (23 km) southwest of Bristol. The Parish of Winscombe and also Sandford, centred on the Parish Church of Church of St James the Great, includes the villages/hamlets of Barton, Hale, Oakridge, Nye, Sidcot and Woodborough. Historically part of Somerset, Winscombe has a few stores as well as businesses concentrated in the centre of the village, along Woodborough Road as well as Sandford Road. There is a doctor's surgery in the town, a veterinarian and also 2 dental experts. West of the town is limit Bog biological Site of Special Scientific Interest.