A group of people who purchased condominiums to be converted from the athletes village for the Tokyo Olympics and Paralympics have taken the developers to court, saying they will incur additional costs due to a prospective one-year delay in the handover of the properties.

In the lawsuit filed with the Tokyo District Court on Friday, the 29 plaintiffs are demanding that Mitsui Fudosan Co. and the other developers of the condominiums hand over the properties by March 2023, as stipulated in their contracts, or pay them a total of ¥80 million in compensation.

The properties are part of the Harumi Flag complex being developed on an artificial island in Tokyo Bay. With more than 20 apartment buildings, a shopping facility and schools, the 13-hectare reclaimed site is expected to have a population of 12,000.