The ownership of these properties are definitely weird. I turn onto what would appear to be my property to get to my garage.. It is about 2/3 ways up to the garage door that the property becomes mine. The side of my home without windows borders on the sidewalk which runs down the windowed side of their house. If that driveway was mine, their lanai, etc would open on to my courtyard. That would not leave me with much privacy.
If you are questioning whether to buy one,don't let this somewhat of a none issue change your mind. Come here and enjoy your home.