LK, I know what you are up against. Tract homes built on slabs are rare up here in New England, but there are some. They can be a real challenge to find a location for the panel. I always try to avoid the tub wall. My concern is excess moisture getting to the panel. I also try to go close to the bedroom door. That way you have a chance of the work space not being blocked by furniture. If you have room in the hallway that works well. After you leave no telling what the homeowner will do. Should make for some good discussion for your crew. Hope you can make it work.
Al
