Contact Us

  • 7220 Wisconsin Ave, Suite 402
  • Bethesda, MD 20814
  • p. 301.652.2775
  • f. 301.652.9381
  • e.
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At ECB Commercial, we share a common passion for construction. We are dedicated to delivering a product that is on-time, budget conscience and the superb quality of construction that we are known for. We are proud to be equipped with the finest construction staff including project managers, estimators, superintendents, carpenters, corporate marketing and business development, accounting and human resources. Our dedicated team provides superb service for our clients, overseeing all aspects of the project at hand and providing exceptional service in estimation, on-site management, and scheduling.

Jean Assuncao, LEED AP


Jean Assuncao is an experienced construction professional with over 23 years in the building industry. As Managing Principal of the Firm, she provides hands-on project leadership, which provides clients absolute assurance of the company's total commitment to their project goals. Under her leadership, she has ensured that the unique needs of each project are completely addressed and adequate resources and qualified staff are committed to meet the job demands. Ms. Assuncao came to the construction industry with over 15 years' experience in the financial markets, having worked as a corporate accountant for two major international banks and a financial consultant for a major investment institution. This experience has proven to be extremely beneficial in her role providing overall direction of the firm as well as for business planning and financial controls for the projects. Outside of work, Ms. Assuncao donates her time to various charities benefiting cancer research and education. In her free time, she is a avid road biker and sweats it out at Bikram yoga.

William (Bill) Rambo

Vice President

With over 30 years of experience in the construction industry, Bill has a comprehensive knowledge of every aspect of commercial interior work. His impressive career has taken him to some of the most prestigious building firms and we feel lucky to have his expertise here at ECB Commercial. Bill provides overall direction to project managers, leading them throughout the building process by lending his extensive knowledge cultivated over the past 3 decades. When he gets a free moment, Bill spends time with his wife at their home in Old Town Virginia. They also enjoy going out west to visit their children and getting some time in on the slopes.