The number of LEED Accredited Professionals (LEED AP) has increased 20 percent year over year, bringing the total number of LEED APs to 25,000.  Accreditation is received from the USGBC, and the rapid increase in LEED APs is a sign of the trend towards sustainable design, construction, and architecture.

There is an extremely informative website/magazine called Building Design & Construction (BD&C), which audits the number of LEED APs in largest United States design and construction firms. They’ve posted a complete list of their results, and here are the top five.

1. Perkins + Will.
2. Gensler.
3. Hellmuth, Obata, Kassabaum (HOK).
4. Stantec.
5. DPR.

BD&C’s article lists LEED AP numbers for each of the top 100 giant design and construction firms. This information is helpful, especially for companies and developers making their first foray into the green business, because it demonstrates who has the knowledge and expertise to build green.

Green building and sustainable design is a major trend that anyone in the industry should start to realize: real estate agents, designers, engineers, architects, contractors, home builders, developers, owners, REITs, RE management companies, etc.