Marc C. Diamant

Marc C. Diamant



Trusted advisor on high-volume commercial real estate transactions. Deep understanding of all facets of the real estate timeline. Regularly handles complex transactions involving ground-up development with public finance elements.

Marc Diamant thrives in the ever-changing world of today’s commercial real estate transactions. He has significant expertise in acquisitions, financing, development work, leasing and loan workouts. Handling a high-volume of real estate transactions means Marc has experience working on deals of all sizes and complexities including portfolio and real estate financing transactions. This results in unmatched knowledge of the array of challenges that his clients may face. Marc regularly works with key stakeholders, including public officials and lenders, to proactively identify issues and offer clients business-minded solutions. He brings particular expertise to projects in the mountain west, especially Colorado and Arizona’s booming development markets. 

Significant experience and knowledge of the different provisions of a lease make Marc’s counsel highly valuable in today’s current business environment. He is working with clients to not only respond to lease and loan issues that have arisen as a result of the COVID-19 pandemic, but to put provisions in place to be better prepared for future events. His ability to quickly pivot his expertise into a relevant service for his clients during a time of great need speaks to both his skill and experience.

A trusted advisor to his clients, Marc is also an advocate in the community volunteering on the board of directors for the Boys & Girls Clubs of Metro Denver. 

Representative Matters

Recent Experience

  • Represented Alberta Development Partners, LLC in all aspects of redevelopment of Southglenn Mall to create a new, mixed-use center called The Streets at SouthGlenn, including the eminent domain process, public and private financing, creation of governing documents with Sears and Macy's and leasing of more than one million rentable square feet of retail, office and residential space to national and regional retailers such as Whole Foods, Dick's Sporting Goods, Best Buy, Staples, 24 Hour Fitness, Ross and eCollege.

  • Represented Alberta Development Partners, LLC in the development and financing of Cornerstar, a new mixed-use center containing 158 acres of retail and residential space in Aurora, Colorado. Brownstein handled the leasing and selling of portions of the center to national and regional retailers such as Target, Dick's Sporting Goods, Best Buy, Office Depot, 24 Hour Fitness and Sunflower Market.

  • Represented Writer Square 08 A, LLC in the acquisition of Writer Square, a mixed-use retail and office property located in downtown Denver.

  • Represented CCA, Inc., a holding company which owns and operates a network of radio stations, in the refinance of a multi-million dollar term loan with United Western Bank.

  • Represented Shea Homes Limited Partnership in the acquisition of various real estate assets and entity interests related to the development of both commercial and residential property in Denver and Arapahoe Counties.



  • J.D., 1999, University of Colorado Law School
  • B.S., 1995, University of Colorado, Business Administration, magna cum laude


  • Colorado
  • Arizona


American Bar Association

Colorado Bar Association

Denver Bar Association

Community Involvement


Board Member, Boys & Girls Clubs of Metro Denver

Former Board Member, AIPAC

Allied Jewish Federation of Colorado

Former Member, Ronald McDonald House Charities of Denver



Best Lawyers in America, 2023-2024

Colorado Super Lawyers, Rising Star, 2009