抄録
Across the world, there is active debate on how to reduce environmental impact, build a society in harmony with nature, and advance the concept of Compact Cities for reorganizing urban communities. In Japan, highly-skilled developers have been increasingly applying such evaluation criteria as CASBEE for interior spaces and SEGES（S ocial and Environmental Green Evaluation System, which focuses mainly on greening） for exterior spaces, in an effort to achieve high-quality interior and exterior environments. Many projects that meet or exceed these criteria have been accomplished. Such high-quality exterior spaces-in particular, the existence effect of green space-not only benefit real estate developers and tenants but also serve as social common capital in the vicinity or an entire city. However, the management of such spaces incurs considerable cost. Who should pay the cost? This is and will continue to be a critical issue. If such spaces are evaluated as capital goods, there would be less hesitation to pay the cost to ensure the permanent value of the real estate. The permanent value of real estate cannot be maintained based solely on goodwill. Thus, regarding spatial attributes that have the potential to significantly benefit the environment, it will be necessary to establish ⅰ the concept of“g reen building value” and ⅱ an objective evaluation framework.
