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Leadership in Energy and Environmental Design (LEED), created in 1998 by US Green Building Council, is an American green building certification program. The latest version of the label is the V4, launched in 2013.

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Certification operator: US Green Building Council (USGBC), a nonprofit organization founded in 1993.

Date of creation: 1998

Leadership in Energy and Environmental Design (LEED) is an American green building certification program. To be LEED certified, building projects have to meet certain prerequisites and earn points to achieve different levels of certification. The prerequisites and credits differ for each rating system, depending on the type of building (office, school, home …) and the type of project (new, renovation...).

Number of projects: To date, more than 79,000 projects are participating in LEED® across 160 countries and territories, comprising over 15 billion square feet.

Different LEED versions: 


The USGBC released the new v4 version of the LEED certification at the end of 2013. This will be the only version on the market from July 2015


LEED® certification looks at the entire life cycle of a green building, its design, its construction and its operations. 8 issues are covered: Integrative Process, Location and Transportation, Sustainable Sites, Water Efficiency, Energy and Atmosphere, Materials and Resources, Indoor Environmental Quality, Innovation and regional priority.

The USGBC has developed a range of rating systems to customize the requirements for certification to the type and/or phase of the building/project, divided into 5 categories:


LEED Scorecard

LEED points are awarded on a 110‐point scale (still on the BD+C version), and credits are weighted among themselves to reflect their potential sustainability impacts.


Ranking system

Some of the credits are considered as prerequisite and need to be fulfilled to reach the label. For the other credits, the minimum number of points to be LEED certified is 40. Higher levels of compliance are possible leading to different rankings, as shown in the table below.


For more information:

LEED presentation : https://www.usgbc.org/leed-v4

LEED library credits: https://www.usgbc.org/credits

User guide: https://www.usgbc.org/resources/leed-v4-user-guide

Discover which LEED v4 rating system applies to your project: https://www.usgbc.org/discoverleed/

LEED Projects: https://www.usgbc.org/projects 

US Green Building Council: https://www.usgbc.org/


Video : What is LEED (by USGBC) ?