The Comprehensive Assessment System for Built Environment Efficiency for Cities (CASBEE-City)

The Comprehensive Assessment System for Built Environment Efficiency for Cities (CASBEE-City) tool (Pilot version for worldwide use (2015)) was released during the United Nations conference on climate change (COP 21) on December 2nd. CASBEE for Cities which assesses the environmental performance of cities around the world. The tool was developed by the committee in Japan's Institute for Building Environmental and Energy Conservation (IBEC) for the development of an environmental performance assessment tool for cities

CASBEE for Cities was initially developed by the Japan Sustainable Building Consortium (JSBC) and the Promotion Council of Future City Initiative (PCFCI) in 2011. The tool was specifically designed for comprehensively evaluating the environmental performance at the city-scale, using a triple bottom-line approach of environment, society and economy. CASBEE-City can also assess the projected effect of city policies by assuming a Business As Usual (BAU) case where no measures are taken and a case where specific measures are taken, and comparing the difference in the two scenarios. This tool could help administrative officers and other stakeholders to share a common understanding of the current state and cooperate together in setting goals and pursuing them in order to create a low-carbon society. Development of the tool started in 2008 and the first version was published in 2011. Revised versions were published in 2012 and 2013, and the tool has recently been used in the “FutureCity initiative” by the Japanese government to monitor the development of Future Cities.

The new tool, CASBEE for Cities (Pilot version for worldwide use (2015)), which was published at COP 21, is a tool that expands the assessment target cities from Japanese cities to entire cities throughout the world.

For more information, please visit CASBEE website and the tool download page


Japan Sustainable Building Consortium