In this article from The Construction Specifier, Timothy R. Hughes and Ela W. Kapusta explain the major changes introduced in LEED 2009, the updated Leadership in Energy and Environmental Design rating system developed by the U.S. Green Building Council. The article notes that LEED 2009 was designed to rationalize and harmonize the various LEED programs into a more cohesive system, with greater emphasis on credit alignment, credit weighting, and regionalization. The authors explain that the revised system shifted more points toward categories such as sustainable sites, water efficiency, and energy performance, while reducing emphasis on categories viewed as less critical to environmental impact. LEED 2009 also introduced a new approach to regional priority credits, allowing projects to earn additional points for addressing environmental concerns specific to their geographic area. The article further explains that LEED 2009 added new prerequisites, increased the number of points available for energy efficiency and water reduction measures, and sought to provide more consistent guidance across the different LEED rating systems.

The article emphasizes that the legal and practical implications of LEED certification extend far beyond environmental goals. Hughes and Kapusta explain that developers, landlords, tenants, contractors, lenders, and property owners increasingly incorporate LEED requirements into contracts, leases, and permitting obligations. Because of this, a failure to achieve the expected certification level can create disputes involving cost overruns, redesign expenses, construction delays, rent obligations, warranties, and default provisions. The article highlights why anyone involved in a green building project must understand both the technical requirements of LEED 2009 and the legal risks associated with failing to meet those standards.