 BETHESDA, Md.--BUSINESS WIRE--JBG SMITH NYSE: JBGS, a leading owner and developer of high-quality, mixed-use properties in the Washington, DC market, achieved a five-star rating from the Global Real Estate Sustainability Benchmark GRESB in the 2021 Real Estate Assessment for both its operating portfolio and development pipeline. JBG SMITH was ranked second of twelve in its sector, achieving five stars, the highest rating available in this assessment. In the development assessment, JBG SM 