oven extractor hood

[jenrid]

Does anyone know how much it would be to fit a full hood extractor fan over an oven space? Its position would be backing onto another house (terraced) but the kitchen is at the back of the house so the vent would need to stretch about 2meters to the right to get out the back of the house. The walls are quite thick. Im guessing we would need a builder/electrician perhaps plasterer??? But not really too sure about these things? Any advice??