It is a house built in a corner of a suburban residential area. In general suburban houses, small and difficult-to-use gardens often remain. Here, we propose how to create an urban cityscape in a residential area by separating the courtyard and terrace as an extension of the living space and the garden to be shown as a part of the street space by a clear exodermis. Inside the exodermis are two regularly arranged courtyards and three terraces. This exodermis has two functions. The first is a security function that physically prevents intruders by closing the doorway, and the second is a function that controls the line of sight. The expanded metal door blocks the line of sight from the outside during the day, while allowing you to see the outside from the inside. On the contrary, at night, the indoor light leaking through the curtains illuminates the streets, giving a sense of security to those who pass by. We believe that active communication of the line of sight will improve the perceived security in residential areas.