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.
Newbridge
Newbridge is a village within the church of Kirkliston, to the west of Edinburgh, Scotland. It originally lay on the western side of the area of Midlothian; however, local government reforms in the late 20th century put it within the territory of the City of Edinburgh Council. Newbridge (including Ratho Station) had a total population of 1,074 at the 2011 Census based on the 2010 meaning of the region.