Dream Office Real Estate Investment Trust : REIT Achieves Five-Star Rating in its Inaugural 2021 GRESB Real Estate Assessment

DREAM OFFICE REIT ACHIEVES FIVE-STAR RATING

IN ITS INAUGURAL 2021 GRESB REAL ESTATE ASSESSMENT

FOR IMMEDIATE RELEASE

TORONTO, OCTOBER 18, 2021, DREAM OFFICE REIT (TSX: D.UN) ("Dream Office" or "the Trust") today announced its five-starrating achievement in the 2021 Global Real Estate Sustainability Benchmark (GRESB) real estate assessment. Dream Office is proud to have achieved a score of 91/100, which is one of the best first year scores in the GRESB real estate assessment, placing it in the top 20% of the global benchmark. GRESB is an industry-drivenorganization that is committed to assessing the environmental, social, and governance (ESG) performance of real estate portfolios around the globe.

"As one of the highest first year scores according to GRESB, we are especially proud of our impressive results. We believe this achievement reflects Dream's commitment to creating a better community for our tenants and residents through how we develop and manage our properties while also generating impressive market returns. We will continue to lead with our Environmental, Social and Governance framework to generate the impact the world needs," said Gordon Wadley, Chief Operating Officer of

Dream Office REIT.

Participation in the GRESB assessment gives Dream Office the opportunity to receive a third-party assessment of our progress towards reaching our ESG goals and the latest score validates the Trust's accomplishments to date.

"Generating positive sustainability, ESG and impact outcomes is an integral part of how we approach and manage our business across the Dream group of companies. For over two decades, we have been working to make our communities better and deliver impact through our assets while maximizing returns to investors. We recognize that being a leader in sustainability, ESG and impact investing is an ongoing commitment, and we expect to build on our momentum as we continue to integrate best practices across our portfolios and challenge ourselves to deliver more," said Michael Cooper, Chief Executive Officer of

Dream Office REIT.

About Dream Office REIT

Dream Office REIT is an unincorporated, open-ended real estate investment trust. Dream Office REIT is a premier office landlord in downtown Toronto with approximately 3.5 million square feet owned and managed. Dream Office has carefully curated an investment portfolio of high-quality assets in irreplaceable locations in one of the finest office markets in the world. For more information, please visit our website at www.dreamofficereit.ca.

About the Global Real Estate Sustainable Benchmark

The Global Real Estate Sustainable Benchmark (GRESB) is a mission-driven and industry-led organization providing standardized and validated Environmental, Social and Governance (ESG) data to financial markets. Established in 2009, GRESB has become the leading ESG benchmark for real estate and infrastructure investments across the world, used by 140 institutional and financial investors to inform decision-making. For more information please visit: www.gresb.com.

For further information, please contact:
Michael J. Cooper	Jay Jiang
Chairman and Chief Executive Officer	Chief Financial Officer
[phone]	[phone]
[e-mail]	[e-mail]