Sustainability
Environmental Certifications
CASBEE
The Comprehensive Assessment System for Building Environmental Efficiency, or CASBEE, is a Japanese government certification that evaluates and rates buildings’ environmental performance based on their energy and resource efficiency, recycling activity, environmental load, and aesthetic appeal.
CASBEE-certified buildings are scored for their environmental performance in five categories and receive a total environmental performance ranking (from highest to lowest): S, A, B+, B.
Tradepia Odaiba
S Rank
Ichigo Kakyoin Building
S Rank
Ichigo Hakata Ekimae Square
S Rank
Ichigo Kichijoji Ekimae Building
A Rank
Ichigo Akasaka Village (formerly Ichigo Akasaka 317 Building)
A Rank
BELS
The Building-housing Energy-efficiency Labeling System, or BELS, is a Japanese government evaluation system that assesses the energy efficiency of buildings. A third-party organization evaluates both new and existing buildings using a Building Energy Index based on Japan’s national energy-efficiency standards. Until March 2024, BELS ranked energy efficiency from five stars to one star, with buildings receiving two or more stars classified as energy efficient buildings under 2016 standards. From April 2024 onwards, the energy efficiency ranking has widened to seven stars, with buildings receiving one or more stars classified as energy efficient buildings according to 2024 standards.
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Ichigo Kakyoin Building
5 Stars★★★★★
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Ichigo Hakata Ekimae Square
5 Stars★★★★★☆
ZEB
A ZEB-certified building aims to maintain a comfortable indoor environment while reducing annual primary energy consumption to net zero. This is achieved through high performance insulation, energy-efficient equipment, and the integration of renewable energy sources. Under the BELS framework, ZEB certification is categorized into four levels (from highest to lowest): ZEB, Nearly ZEB, ZEB Ready, and ZEB Oriented.
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Ichigo Kakyoin Building
ZEB Oriented
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Ichigo Hakata Ekimae Square
ZEB Oriented