Hirooka Terrace

Hirooka Terrace: A prototype building that meets the needs of the local community

Today, the role expected of offices and office buildings as places where people gather and connect is undergoing major changes. Hirooka Terrace aims to increase the openness and fluidity of the workplace, creating a workplace where diverse users can intersect as a collaborative hub and generate new innovations, while also realizing this not just inside, but in an environment where people can feel the natural surroundings outside. In response to Kanazawa's climate, various initiatives, the first of their kind in the region, actively incorporate indoor, outdoor, and semi-outdoor shared spaces, demonstrating the "prototype architecture" that the local community will demand in the future.

① Tenant shared terraces provide a space for interaction and collaboration both inside and outside the building

Hirooka Terrace has fundamentally reconsidered the typical office building configuration of "large private areas and narrow common areas" and "common areas accessed from internal corridors," and created "generous common areas" "both inside and outside the building," thereby expressing the theme of creating a place for interaction and collaboration throughout the building.
The terrace located on the north side of the office (Keyaki Boulevard side) is continuous not only horizontally but also vertically via stairs and an atrium. It is a generous shared space that can be used freely by all tenants, rather than being divided into exclusive areas for each tenant. In typical office buildings, encounters and interactions between tenants only occur in the internal corridors, but in this building, the semi-external terrace also makes the space outside the windows the "outside," creating a structure that generates activity both inside and outside the building.

② Creating new value and a place for collaborative creation through connection with Hokkoku Bank Head Office Building

Furthermore, the building aims to be an architecture that grows alongside the local community, and is also working on a wide range of initiatives to promote sustainability.

・Introducing the largest-ever "MI Deck" and making abundant use of wood from Ishikawa Prefecture
This building uses MI Deck, a reinforced concrete lumber system developed by MEC Industry Co., Ltd. (headquarters: Yusui-cho, Aira-gun, Kagoshima Prefecture), a joint venture established by seven companies ^* including Mitsubishi Estate. This project marks the largest scale to date for the adoption of MI Deck (39.29 m3 of prefectural cedar and 95.87 m3 of southern Kyushu cedar). In addition to the ceilings, the building actively uses Ishikawa Prefecture-grown cypress (exterior wood on the second and third facade) and cedar offcuts (furniture and art), promoting the spread of wood-based architecture and carbon neutrality, while also supporting the recovery of the prefecture's lumber industry, which was damaged in the Noto Peninsula earthquake.

* MEC Industry Corporation: Mitsubishi Estate Corporation, Takenaka Corporation Corporation, Daiho Construction Corporation, Matsuo Construction Corporation, Nankoku Shokusan Corporation, Kentec Corporation, and Yamasa Lumber Corporation established this general lumber company in 2020. The company provides a full range of services from raw material procurement and manufacturing to processing and sales of building materials using wood. Mitsubishi Jisho Design is a member of Mitsubishi Estate Group and actively provides technical support to the company.

Left: Office. The "MI Deck" allows the wood grain to be seen on the underside of the upper floor slab. The vertical ceiling creates a spacious space with a sense of height. Right: Stool. Made from recycled cedar offcuts from Ishikawa Prefecture. *

・The first high-rise office building with a total floor area of over 20,000 m2 to receive Nearly ZEB certification
The semi-exterior terrace that creates the building's distinctive exterior blocks direct sunlight from reaching the interior, and in combination with Low-Eglass, significantly reduces the air conditioning load.The terrace is also equipped with jalousie windows that can be opened and closed by users, creating a well-ventilated space while also implementing a passive design that encourages natural ventilation in the offices.
In addition to these architectural plans, thorough energy conservation was achieved by introducing highly efficient equipment, including a heat source system that uses groundwater, and the building has been awarded the highest rating (five stars) andNearly ZEB by BELS, a third-party certification system based on the Building Energy Conservation Act. This is awarded to buildings that have reduced their primary energy consumption by 75% or less, and is a testament to the building's high environmental performance.

Obtained the highest rating in BELS and Nearly ZEB, achieving an energy reduction rate of 78%

In parallel with the construction of this building, Hokkoku Bank Head Office Building was also renovated to accommodate the organizational Renovation from Hokkoku Financial Holdings to the CCI Group. An open office environment was created, embodying a well-ventilated organizational culture in the form of space. By connecting the two buildings, the head office functions, which were previously limited to banking functions, were supplemented with new communication functions for linking with the local community, completing a setup befitting a "next-generation regional comprehensive company."