GRESB assesses and benchmarks the environmental, social, and governance (ESG) performance of real asset investments, providing standardized and validated ESG data to capital markets. It has been assessing the ESG performance of properties, funds, and infrastructure assets since 2009, and now represents over $4 trillion in real asset value. GRESB provides two complementary assessments: a fund assessment that evaluates asset management at the fund level, and an asset assessment that evaluates ESG performance at the individual asset level.