East Tower is one half of the prestigious twin-tower complex Otemachi First Square, a landmark development situated at the prominent intersection of Hibiya and Eitai streets in Tokyo‘s central Otemachi district. Completed in May 1997 as the second phase of the project following the West Tower‘s completion in 1992, the 23-storey steel-framed structure serves as a world-class business hub, directly connected to one of Tokyo's most extensive underground networks .

The building operates as a mixed-use commercial complex with office floors occupying the upper levels and a variety of retail and dining establishments on the lower floors. The tenant mix includes numerous domestic and international corporations, with the building offering a highly functional workspace environment featuring zoned air conditioning, security gates, and rental conference rooms. The commercial concourse, known as “Grand Age,” provides restaurants, retail stores, and a convenience store, supporting the daily needs of office workers and visitors alike .

Connectivity is truly exceptional. The tower is directly linked via underground passage to Otemachi Station, which is served by five different subway lines—the Tozai, Marunouchi, Chiyoda, Hanzomon, and Toei Mita lines . Additionally, Tokyo Station on the JR lines is just a five-minute walk away, providing access to the Shinkansen bullet train network and further enhancing the building‘s status as a premier business location.

Otemachi First Square East Tower is a single ownership Commercial Building with offices available for rent.

Flex and serviced office solution is available from Regus operating in this building. Click Here for rates and promotional packages.