Akasaka Green Cross

A 28-floor ZEB-certified office tower completed in May 2024 in Akasaka, Tokyo. Developed jointly by Sekisui House and Nippon Life Insurance, it brings next-generation environmental performance to the heart of the city.

Use

Office tower

Area

Minato City

Completed

2024

Floors

28 above ground

Developer

Sekisui House / Nippon Life Insurance

A Green Benchmark in the Heart of Akasaka

In May 2024 a new 28-floor office tower joined the skyline of Akasaka, one of Tokyo’s most densely connected business districts. Akasaka Green Cross was developed jointly by Sekisui House and Nippon Life Insurance, two companies that rarely share a development address. The building’s name signals its ambition: “Green” for environmental performance, “Cross” for the intersection of ideas and people it aims to host. A dedicated sky lounge on the top floor is available exclusively to tenants — a rarity that speaks to the premium tier the project targets.

ZEB Certification and the Push for Greener Offices

The building holds ZEB (Net Zero Energy Building) certification, one of the most demanding green-building standards applied to commercial office towers in Japan. Achieving ZEB requires combining high-insulation envelope systems, high-efficiency mechanical and lighting installations, and on-site renewable energy generation to reduce net energy consumption close to zero. In a district where prestige traditionally means central location and floor size, Akasaka Green Cross adds environmental credibility to the scorecard.

The address — 2-4-6 Akasaka, Minato City — places the building within walking distance of Tameike-Sanno and Akasaka-Mitsuke stations, connecting riders to the Ginza, Namboku, and Marunouchi lines. Neighbours include Akasaka Intercity AIR and Akasaka Biz Tower, testament to how thoroughly this stretch of Akasaka has reinvented itself as a Grade-A office corridor over the past two decades.

Summary

Akasaka Green Cross, completed in May 2024, stands 28 floors in Minato City’s Akasaka district. Developed by Sekisui House and Nippon Life Insurance, the tower combines a ZEB-certified environmental specification with a tenant sky lounge and strong transport links. It is a marker of the direction Tokyo’s premium office market is heading — toward buildings that earn their place not just by height and location, but by how lightly they tread on the grid.