Following her early professional experience at the Washington, D.C. offices of Skidmore, Owings and Merrill and Keyes, Lethbridge, and Condon, she established her Washington, D.C.-based architectural practice both independently and in partnership with John McCartney FAIA. A fellow of the American Institute of Architects, Ms. Lewis has been the recipient of numerous design awards from the AIA as well as civic groups; her work has been published in such periodicals as Washingtonian magazine, Custom Home, Mid-Atlantic Country, and Builder and has been featured on HGTV. From 2003 to 2008, she served as a professional architect member of the District of Columbia Historic Preservation Review Board.