The Concordia Group offers 50+ years of combined experiences in various facets of real estate development. From providing expertise in a particular phase of development to leading the charge for the entire effort, our experience is a long history of embracing opportunities to create something entirely new.


Our Approach

We come to the table determined to define a clear vision and prepared to transform that vision into reality. The Concordia Group takes full ownership of the task before us, focusing on the many details that will ensure thoughtful planning and intelligent execution. Our unwavering commitment to key goals, our vast experience, and access to capital, instills confidence in all who are invested in the ultimate success of the project.

Our Team

William J. Collins


Will Collins began his real estate career in 1985 as Vice President for Institutional Investment for the Smithy Braedon Company. In 1990, he joined Horning Brothers, working with the family-owned developer building multi- and single-family detached and townhome communities throughout the Washington DC region. The experience he gained with these firms led him to form The Concordia Group in 1999.

Will has developed over 2,600 residential units in infill locations around the Washington Metropolitan Area. In 2015, The Concordia Group expanded into the Philadelphia market and has successfully developed multifamily and for sale communities throughout the Philadelphia region. Throughout his career, Will has acted as a real estate advisor to many non-profits in the Mid-Atlantic region.

Will holds a BA degree from Villanova University and a JD from the Catholic University School of Law. He is a member of the Board of Directors for the District of Columbia Builders Industry Association, the Urban Land Institute and is currently licensed as a licensed real estate broker in Maryland, Virginia, Pennsylvania and the District of Columbia.

Devin Tuohey


Devin Tuohey oversees operations in the Philadelphia market. Prior to joining The Concordia Group, he was responsible for finance and acquisitions for City Interests, a fully-integrated real estate development firm focused on mixed-use, transit oriented development in Washington, D.C.

Devin began his career at Holliday Fenoglio Fowler, LP working in the firm’s New York City and Washington, D.C. offices. There, Devin was an essential figure in the Investment Sales Group and Debt Financing Group, participating in over $1.5 billion of real estate transactions throughout the United States.

Devin holds a BA degree from Colgate University and a JD from Fordham Law School. Devin is a member of the Urban Land Institute, the Philadelphia Builders Industry Association and is a licensed real estate broker in the State of Maryland.

Brian Simpson


Brian Simpson is responsible for the accounting functions and financial reporting requirements of the company. Prior to joining The Concordia Group, Brian was a Senior Manager at CohnReznick and a member of the firms Construction Industry Practice. Brian worked closely with general contractors, subcontractors, homebuilders and developers. He was involved in all functions in audits, reviews, and consulting engagements. Brian holds a BS degree in Accounting from Elon University and is a Certified Public Accountant.

Susan D. Boyd


Susan Boyd has been a part of The Concordia Group team since its inception in 1999. As Office Manager, she oversees all administrative and human resources duties. She also assists with accounting responsibilities for the development project.

Ms. Boyd holds a BS degree in Office Administration from Benedict College and a MBA from the University of the District of Columbia. She is a notary for the State of Maryland and a licensed real estate agent in the District of Columbia, Maryland and Virginia.