CoStar Group continues to gain recognition for its groundbreaking study on the income premium associated with "green buildings," specifically those that have earned the U.S. Environmental Protection Agency's ENERGY STAR label and/or LEED certification from the U.S. Green Building Council. The American Real Estate Society (ARES) has recognized the study as the "Best Paper Published in the Journal of Real Estate Portfolio Management (JREPM)" in 2008. ARES, whose members include leading global academic and professional researchers, recognizes papers annually that explore the critical issues of applied real estate decision-making.