The issue is the side of my house to the side of their house is like maybe 15-20 feet. It's very difficult to "watch" my side w/o capturing theirs. They were already concerned with me putting in motion activated flood lights. I will certainly speak to them
If you have a fence between properties putting a camera on a fence post looking in can work well. This setup works particularly well if the camera on the property edge is in the view of another camera.