I recently moved to a new house as well. I took Duchess to the new home before I moved in and honestly she probably thought she was just visiting. She wasted no time in christening it though
took a dump right on the living room carpet
......but other than that, she was not stressed at all.
One of the things I did was showed her where her potty pad was going and where her food bowls will be. I thought I would have to potty trained her again but I didn't have too. One of the things I did was take a soiled potty pad and put it in the new home and fortunately for me, she took right to it without me having to retrained her
I don't think he will be to stressed. They adjust really fast. If Duchess was stressed, she did a good job of hiding it. Within a few hours of moving in, she was chasing the cat around the house and "helping" me unpack. In fact I think she was actually excited, there was a fenced in dog across the street she could bark at, there were little bunny rabbits every where and the occasional stray cat she could bark at......I'm guessing she loved her new home.
When you do move, just be sure to give her a "tour" of the house, making sure he knows what spaces he is allowed to go in. I just closed the doors to the rooms Duchess was not allowed in until I was sure she would use her potty pads consistently. But I think we stressed more than they do worrying about if they will be stressed. As long as I was around to help with the transition, Duchess was fine during the move and has adjusted quite well.