2020 SASB Disclosures

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INDUSTRY LEADERSHIP IN SUSTAINABILITY

We continue to be recognized as an industry leader in sustainability. In 2020, BXP ranked among the top real estate companies in the Global Real Estate Sustainability Benchmark (“GRESB”) assessment, earning a fifth consecutive 5 Star rating, the highest rating and recognition for being an industry leader. It was the ninth consecutive year that BXP earned the GRESB
“Green Star” designation, achieving the highest scores in several categories, including: Data Monitoring & Review, Targets, Policies, Reporting and Leadership. BXP was also named one of America’s Most Responsible Companies by Newsweek magazine in 2020. BXP ranked 56th overall out of 400 companies included. It was the second highest ranking of all property companies and the highest ranking of any office REIT. In 2014, 2015, 2017, 2018 and 2019, BXP was selected by the National Association of Real Estate Investment Trusts (“Nareit”) as a Leader in the Light Award winner. Nareit’s annual Leader in the Light Awards honor Nareit member companies that have demonstrated superior and sustained sustainability practices.

BXP has adopted sustainable development and operational practices across its portfolio. BXP became a proud signatory of the We Are Still In pledge after the U.S. withdrawal from the Paris Agreement, and has aligned emissions reduction targets with climate science. The SBTi Target Validation Team has classified BXP’s emissions reduction target ambition and has determined that it is in line with a 1.5°C trajectory, currently the most ambitious designation available. As of the end of 2020, BXP is one of six North American Real Estate companies with this distinction and the only North American office company in that group. We have LEED certified 28.8 million square feet of our portfolio, of which 96% is certified at the highest Gold and Platinum levels. BXP’s master lease form includes green lease clauses that support a more sustainable tenant-landlord relationship. In 2020, BXP was named a Green Lease Leader at the highest Gold level by the Institute for Market Transformation and the U.S. Department of Energy for exhibiting a strong commitment to high performance and sustainability in buildings and best practices in leasing. Through active asset management and tenant engagement, BXP has been a leader in energy efficiency and healthy building practices. In 2020 BXP was recognized by the Environmental Performance Agency (“EPA”) as an ENERGY STAR Partner of the Year for Sustained Excellence. This award is reserved for ENERGY STAR partners demonstrating outstanding leadership, year over year. Partners must perform at a superior level of energy management, demonstrate best practices across the organization and prove organization-wide energy savings. BXP was named a 2020 Best in Building Health award winner. We completed the first Fitwel Design Certified project in the world in 2019 and executed more Fitwel certifications by count and building area than any other company in 2019. BXP has 11 Fitwel Ambassadors among our Sustainability, Development and Property Management teams.

SUSTAINABILITY ACCOUNTING STANDARDS BOARD (“SASB”)

The Real Estate Sustainability Accounting Standard issued by SASB in 2018 proposes sustainability accounting metrics designed for disclosure in mandatory filings, such as the Annual Report on Form 10-K, and serves as the framework against which we have aligned our disclosures for sustainability information. The recommended energy and water management activity metrics for the real estate industry include energy consumption data coverage as a percentage of floor area (“Energy Intensity”); percentage of eligible portfolio that is certified ENERGY STAR® (“ENERGY STAR certified”); total energy consumed
by portfolio area (“Total Energy Consumption”); water withdrawal as a percentage of total floor area (“Water Intensity”); and total water withdrawn by portfolio area (“Total Water Consumption”). Energy and water data is collected from utility bills and submeters and is assured by a third-party, including all SASB 2019 energy and water metrics, which have been assured. During the 2019 calendar year, 45 buildings representing 42% of our eligible portfolio were ENERGY STAR certified. A licensed professional has verified all ENERGY STAR applications.