If the new home is one in which the previous owner had a dog, it is a good idea to have it thoroughly cleaned so that your dog will not smell the odors of the previous owner's dog and want to mark this new territory for himself. Show your dog where his food, water, and bed will be. Let him freely roam the new house and do not let him outside unsupervised. As long as you and your furniture are there, your dog will adjust quickly. If your new home does not have a fenced yard you have a wonderful opportunity to teach your dog the boundaries beyond which you do not want him to go.
Boundary training takes patience and time.
Do not let your dog roam freely outside. Instead, each day walk him on a leash around the perimeter of your new property. Continue this several times a day for several weeks. To test him, attach a long, light nylon line to his collar, throw a ball over the boundary line and see if he goes across to fetch it. The line should be just long enough to let him get to the boundary.