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.
Cromarty
Cromarty is a town, civil parish and previous royal burgh in Ross and Cromarty, in the Highland area of Scotland. In the 2001 census, it had a population of 719. Cromarty is a sea port on the southern shore of the mouth of Cromarty Firth, 5 miles (8 km) seaward from Invergordon on the contrary coastline. Up until 1890, it was the county town of the former region of Cromartyshire. Cromarty gives its name to among the sea locations of the British Shipping Forecast.