What is LEED anyway????

Leadership in Energy & Environmental Design (LEED) is an internationally recognized green building certification system, providing third-party verification that a building or community was designed and built using strategies intended to improve performance in metrics such as energy savings, water efficiency, CO₂ emissions reduction, improved indoor environmental quality, and stewardship of resources and sensitivity to their impacts.

LEED has evolved since its original inception in 1998 to more accurately represent and incorporate emerging green building technologies. LEED NCv1.0 was a pilot version. These projects helped inform the USGBC of the requirements for such a rating system, and this knowledge was incorporated into LEED NCv2.0. LEED NCv2.2 was released in 2005, and v3 in 2009. Today, LEED consists of a suite of nine rating systems for the design, construction and operation of buildings, homes and neighborhoods. Five overarching categories correspond to the specialties available under the LEED Accredited Professional program. That suite currently consists of:
Green Building Design & Construction

• LEED for New Construction
• LEED for Core & Shell
• LEED for Schools
• LEED for Retail: New Construction and Major Renovations
• LEED for Healthcare

Green Interior Design & Construction

• LEED for Commercial Interiors
• LEED for Retail: Commercial Interiors

Green Building Operations & Maintenance

• LEED for Existing Buildings: Operations & Maintenance

Green Neighborhood Development

• LEED for Neighborhood Development

Green Home Design and Construction

• LEED for Homes

LEED also forms the basis for other sustainability rating systems such as the Environmental Protection Agency's Labs21.
After four years of development, aligning credits across all LEED rating systems and weighting credits based on environmental priority, USGBC launched LEED v3,^[5] which consists of a new continuous development process, a new version of LEED Online, a revised third-party certification program and a new suite of rating systems known as LEED 2009. In response to concerns that LEED's requirements are cumbersome and difficult to learn, in 2009 USGBC supported the development by BuildingGreen, LLC of LEEDuser, a third-party resource that contains tips and guidance, written by professionals in the field, on applying LEED credits and the LEED certification process.