Yes i agree, best to check with your local council. Mine told me that i would have to apply for a change of use, but his should be fine, as it relates to the number of cars coming- and as a therapist i would only be doing one client at a time, with no high noise levels, so they could see no problem. I would also have to pay business rates, and have a special treatments licence, as well as a separate toilet & hand basin for clients.