Hi, Established magnolias can be very difficult to move because they have extensive root systems and they can be very fussy about transplanting. Since this tree is already right up against your home it would be difficult to move a tree spade into place to move the tree. Also, they only really should be moved in early spring before breaking dormancy. I don't want to sound too pessimistic, but you may be forced to cut this tree down and plant new. You might want to get a tree mover's advice who can see the tree in person, but keep in mind, you can't even move this tree till next March or so.