Park Ventures, the building complex constructed by Thai Obayashi, a subsidiary of Obayashi Corporation, has been awarded LEED® （Leadership in Energy & Environmental Design） Platinum for Core & Shell* by the USGBC （U.S. Green Building Council）.

LEED evaluates and grades buildings with superior energy efficiency and sustainability in terms of planning , design, construction, operation and maintenance. The categories of the evaluation point of LEED are "Sustainable Sites", "Water Efficiency", "Energy and Atmosphere", "Material and Resources", "Indoor Environmental Quality", "Innovation ", and "Regional Priority Credits". With environmental issues being a focus point in construction, more than 130 countries around the world are currently working to achieve LEED certification.

Obayashi Group owns Webcor Builders, a U.S. subsidiary, who has more than 120 LEED-APs (LEED Accredited Professional）.

Obayashi Corporation is currently learning about LEED and development of LEED-AP from Webcor, who has a plenty of experience as LEED consultants. Utilizing the asset of the subsidiary, Obayashi is working to achieve LEED certification in all fields, including planning, designing, and construction.