Dream Studio

I've long dreamed of a studio right here at home--but the basement is too dark & in the winter too cold. A small structure built in the backyard would be really cool; but you'd have to run electricity to it & figure out how to heat it. Yesterday a friend suggested adding a room above my garage, which would be really ideal I think--it would even have north light! I have no idea how it could be accessed from inside the house but probably some clever builder could do it. It's great fun to dream about anyway.