The defensible space theory is applicable to any type of planned space. From low density housing to high rises, the key is the development of a communal area in which residents can “extend the realm of their homes and the zone of felt responsibility.” Circulation paths and common entry are important aspects of defensible design as well. Residents must also feel a need to extend their protective attitudes to locations where property and urban streets and surroundings connect. The interfacing between private property and community space should be protected similarly.