PROBLEM TO BE SOLVED: To control a group of seismic isolated buildings having high seismic resistance, which suppresses fatal damage such as collapse against a huge earthquake and keeps the response level repairable, targeting a block in a city where low-rise to high-rise buildings are densely packed. Provide a method for designing seismic isolated buildings. SOLUTION: In a seismic isolation building group 10, a first seismic isolation member 11 installed on a first ground G, a second ground 2 supported by the first seismic isolation member 11, and a second ground 2 are placed. It is characterized by including a second seismic isolation member 31 installed and a plurality of buildings 4 supported by the second seismic isolation member 31. [Selection diagram] Fig. 1
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