On June 23, Tokyo Organising Committee of the Olympic and Paralympic Games (TOCOG) announced the winning bidders for the tender concerning "Preliminary design of Temporary Overlays IV Makuhari Messe Hall A and other 10 venues." The contract was won by a joint venture consisting of the Institute of New Architecture Inc. (INA) , ACA Sekkei Co. Ltd. and Teshima Architectural Office Co. Ltd. The Joint venture will be responsible for the basic design of temporary overlays at the Makuhari Messe Halls A, B,C; the Tsurigasaki Beach Surfing Venue, Kasumigaseki Country Club, Saitama Super Arena, Satama Stadium, Yokohama Stadium, Sapporo Dome, MIyagi Stadium and additional locations.
| Contract no. | 29-1009 |
| Contract | "Preliminary design of Temporary Overlays Ⅰ New Olympic Stadium, Tokyo Metropolitan Gymnasium, Yoyogi National Stadium, Nippon Budokan " |
| Winning bidders | Institute of New Architecture Inc. (INA) , ACA Sekkei Co. Ltd. and Teshima Architectural Office Co. Ltd. Joint venture |
| Price (incl. tax) | 158.3 million JPY |
Sources: TOCOG, Business Navi 2020