If you sit in a parked car in front of a multi-dwelling building, you only see people walk into and out of the building&#x27;s front door. You don&#x27;t get to see which internal unit each person lives in. It doesn&#x27;t help you to know that I live at 123 Random Street and am not home from 8am-6pm if you don&#x27;t know that I live in Unit #456. You&#x27;d have to first pick me out from the crowd, and then actually follow me into the building to find out which unit I live in.<p>It&#x27;s much easier to case a location that is directly accessible from the street. And easier to break into a door or window for that location, rather than entering a building and then breaking down a door in a hallway with frequent foot traffic.