Boston Properties Earns Top ESG Rating in 2019 GRESB Assessment

Ranked Within the Top 4% of Worldwide Participants

Boston Properties, Inc. BXP, the largest public developer, owner and manager of Class A office properties in the United States, today announced that it has ranked in the top quadrant of the 2019 Global Real Estate Sustainability Benchmark (GRESB^®) assessment, earning an eighth consecutive "Green Star" recognition and the highest GRESB 5-star Rating. Overall, the Company ranked among the top 4% of 964 worldwide participants.

"I am proud that BXP continues to be recognized for our commitment to sustainable development and operations. In addition to making a material contribution to the health of our environment, our leadership position in these ratings is increasingly significant to shareholders, customers, employees and community stakeholders important to BXP," said Owen Thomas, CEO of Boston Properties. "Our ESG success is the result of the passion and commitment of our entire team to execute our strategy and to promote our growth in a sustainable and responsible manner."

Since 2008, the company has certified over 21 million square feet of our current in-service portfolio at the highest LEED certification levels of Gold and Platinum. The Company has publicly announced sustainability goals, and has implemented energy conservation projects and other measures in actively managed office buildings that have reduced site energy use intensity by 24% and greenhouse gas emissions intensity by 39% over the last 10 years.

"GRESB is the leading ESG assessment for real estate, covering a comprehensive set of ESG performance indicators," said Ben Myers, Director of Sustainability at Boston Properties. "Our 2019 top rating is validation of the collective attention and action across the company to monitor and continually improve social and environmental performance indicators."

About Boston Properties
Boston Properties BXP is the largest publicly-held developer and owner of Class A office properties in the United States, concentrated in five markets -Boston, Los Angeles, New York, San Francisco and Washington, DC. The Company is a fully integrated real estate company, organized as a real estate investment trust (REIT), that develops, manages, operates, acquires and owns a diverse portfolio of primarily Class A office space. The Company's portfolio totals 50.9 million square feet and 193 properties, including 12 properties under construction. For more information about Boston Properties, please visit our website at www.bostonproperties.com.

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