Sean C. Cahill is vice president of development for Property Group Partners and oversees development activities in the Washington metropolitan area. Before joining the company in 2004, he was the chief operating officer at Horning Brothers where he supervised daily operating aspects of large development projects. Mr. Cahill is a member of the Urban Land Institute, Washington Real Estate Group, Montgomery County Chamber of Commerce, National Association of Industrial & Office Properties and the International Development Research Council. He has a bachelor of science degree in architecture from Catholic University of America.

Active in developing green standards in Washington, Mr. Cahill is a LEED AP, a member of the Mayor’s Green Buildilng Advisory Council and a member of the USGBC. He successfully guided the recent construction of two Property Group Partners office buildings that qualified for the first LEED Gold and LEED Platinum certifications in the District. He is a board member of the District of Columbia Preservation League, the DC Building Industry Association and Casey Trees, a community tree planting program.