William M. Collins has more than 30 years of commercial real estate experience focused primarily in the sale of commercial real estate office buildings and land in the Washington metropolitan area.

Bill works actively with institutional owners in the consultation and disposition of their real estate assets. During the past ten years, he has successfully completed more than $30 billion in investment property sales.

Areas of Specialization

• Investment Sales

• Finance, Debt, and Equity

• Land Acquisition & Disposition

A founding principal of Stonebridge, Douglas Firstenberg directs firmwide strategic planning, oversees landmark development projects, and plays a key role in major transaction negotiations. Under his leadership, Stonebridge has developed several of the region’s most innovative and successful urban mixed-use properties, including breakthrough transit-oriented developments and public/private initiatives.

Mr. Firstenberg has more than thirty-five years of real estate industry experience, leading complex development projects totaling more than 10 million square feet and $4 billion in value. Mr. Firstenberg started his career with K.S. Sweet Associates, a Philadelphia-based real estate and investment firm where he was named partner. In 1993, he co-founded Stonebridge Associates in Washington, D.C., and led the transformation of the firm into an urban infill mixed-use developer. Mr. Firstenberg graduated from Duke University with a Bachelor of Arts and currently serves in leadership roles of several industry and charitable organizations.

Monica Dalwadi is the Managing Partner of Baker Tilly’s Washington, D.C. metro region. She provides leadership, management and strategic direction for the D.C. market, including providing insight and advice to client engagement teams, fostering employee development and recruiting and driving growth. Prior to her Managing Partner role, Monica lead the D.C. risk, internal audit and cybersecurity (RIAC) practice, where she consistently distinguished herself through exemplary service to clients and colleagues and oversaw RIAC team members, assisting in budgeting and developing new business for the practice. Monica serves on Baker Tilly's National Diversity & Inclusion (D&I) steering committee and was a founding leader of Baker Tilly’s initial D&I efforts (SOAR - Supporting Opportunity, Advancement, and Recognition for all). Further, she serves on Baker Tilly’s Growth and Retention of Women committee and is a member of Ascend (Pan-Asian Leaders in Finance and Accounting).