Japan’s housing and wood products company Sumitomo Forestry has unveiled the concept of the W350 plan to develop a 350m-tall wooden high-rise building in Tokyo.

The structure is slated open in 2041 to mark the 350th anniversary of Sumitomo Forestry.

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Its concept was created at the company’s research and development facility, Tsukuba Research Institute. Sumitomo Forestry aims to create environmentally friendly and timber-utilising cities through the increased use of wooden architecture for high-rise buildings.

The hybrid wood and steel structure will be composed of 90% wood materials, embraced with steel frames for earthquake resilience, wooden interiors and balconies with plants around the exterior.

“Aimed to transform the Japanese capital into an environmentally friendly city, the project will feature a garden roof and plant-filled balconies.”

The mixed-use 70-storey building will span over 6,500m², with an approximated construction cost of JPY600bn ($5.6bn) and use 185,000m³ of timber.

Architectural firm Nikken Sekkei was involved in the development of the building’s design.

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Sumitomo Forestry aims to reduce carbon dioxide emissions and promote reforestation with the extensive usage of wood in the structure.

Wildlife is planned to be introduced into the town as part of the W350 project, along with an increase in the number of wooden structures. This is intended to reduce global environmental burdens.

Aimed to transform the Japanese capital into an environmentally friendly city, the project will feature a garden roof and plant-filled balconies.

Founded in 1691, Sumitomo Forestry offers services for environment and resources, timber and building materials, as well as housing and overseas operations.