About Us


Mack Real Estate Group was founded in 2013 by William, Richard and Stephen Mack whose family experience in commercial real estate dates back several decades. Headquartered in New York City, MREG is an integrated developer, operator, investor and lender with offices and affiliates across major markets of the United States.


Over the course of more than 60 years, the Mack family has capitalized on emerging trends in real estate by adapting its investment activities decade by decade — pioneering the development of suburban office campuses in the 1970s and 1980s; being an early-mover in the real estate private equity fund business in the early 1990s; and forming a specialized real estate credit management business in 2014.

Mack Real Estate Group seeks to combine institutional-quality best practices with the cultural and reputational heritage of a family office. Our goal is to be a collaborative, interdisciplinary real estate investment platform with outstanding responsiveness to and partnership with our stakeholders across the real estate sector including investors, borrowers, joint venture partners and lenders.

Early 1960s

The Mack Company is founded to invest and develop distribution & industrial property in the New York City metropolitan area


William Mack co-founds Apollo Real Estate Advisers, later named AREA Property Partners, a private equity real estate investment management company, and Richard Mack joins as one of the initial employees

1970s to 1980s

William Mack pioneers the development of prominent corporate office campuses for the pharmaceutical and telecom industries, establishing a portfolio of more than 20 million square feet


Apollo Real Estate Advisers is a first-mover in the mezzanine debt fund management business


Mack-Cali (NYSE: CLI) is formed via a merger and contribution of Mack Company office assets, making CLI one of the largest public real estate companies at the time. Although CLI is not affiliated with MREG, William Mack continued to serve as its Chairman until 2020


MREG establishes a development program that quickly grows to 5,000+ Class-A apartments in primary U.S. coastal cities including New York, Miami, Los Angeles, Seattle and Portland

MREG launches Mack Real Estate Credit Strategies, L.P. (MRECS), a diversified real estate debt platform


The Mack family sells its interest in the AREA business and forms Mack Real Estate Group (MREG), a diversified real estate company focused on management and development


MRECS surpasses $13 billion in loan originations, co-originations and acquisitions, with investments across the real estate credit spectrum including first mortgage, mezzanine, CMBS, and preferred equity