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.
Grantown-on-spey
Grantown-on-Spey is a community in the Highland Council Area, traditionally within the county of Moray. It was founded in 1765 as a planned negotiation on a reduced plateau at Freuchie beside the river Spey at the north edge of the Cairngorm hills, about 20 miles (32 km) south-east of Inverness (35 miles or 56 km by roadway). Originally called just Grantown after Sir James Grant, on Spey was added by the burgh council in 1898. The town is twinned with Notre-Dame-de-Monts in the Vendée, Pays-de-la-Loire, France. Because 2011, Grantown-on-Spey has actually been house to Shinty club Strathspey Camanachd.