To provide closely located buildings that ensure, even if a plurality of buildings are closely located, sunlight and wind coming through from the side on which the buildings face one another.

A land for sale in lots 11 located between roads R1 and R2 extending in the same direction is divided by a first boundary L1 into sections, some on one side of the road and the others on the other side, and is further divided along the roads R1 and R2 by a second boundary L2 into multiple sections. As a result of these division, the land for sale in lots 11 has 4 plots 12a, 12b, 13a and 13b, and free-standing houses 22a, 22b, 23a and 23b are densely built on each plot. The houses 22a, 22b, 23a and 23b have respective depressed corners along the first boundary L1, creating outside public space A at the center of the land for sale in lots 11.