We went and viewed a house in Frensham today and fell in love. It was by accident because the realo had forgotten the key to the place we actually wanted to see. Turned out very well.
We had a guy come over to give a very rough quote on a drive and garage from the back of our property. He said it was possible but quoted £10-£18k for the garage alone.
Also, a very rude old man set us straight about what we were allowed to do as far as the council is concerned.