Kenpeiritsu


Kenpeiritsu (建蔽率) – the legally allowed ratio of building area to land area. Note that the “building area (kenchiku menseki; 建築面積)” is not the sum total of the floor area, but can be roughly defined as the shadowed area created by the sun when directly above the building. Having said that, balconies are allowed to protrude up to 1 meter past the outer wall without being counted. See the first row of percentages in the image below. The second is the floor space index.

Kenpei_Youseki

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