This paper deals with the formation process of neighboring boundary.
Kyoto had a variety of neighboring boundaries at Edo period. This paper classified the neighboring boundary into three kinds based on fixation. The main current was vague neighboring boundaries, and bending neighboring boundaries without boundary devices, before urbanization of the 17th century. The block changed a vague neighboring boundary to a lucid device, by the process of modenization. The neighboring boundary with the ruggedness in an architectural scale was maintained as it used to be, or was replaced by a straight line neighboring boundary.
