The Christian Science Plaza was designed in the 1970’s by I. M. Pei & Associates. The Church added new concrete structures and landscaping to existing historic church buildings to create a unified complex. One of these buildings, 177 Huntington Avenue, or the Plaza's Administration Building was built in 1972. This Modernist building is constructed of concrete and is a listed Boston Landmark.

BCA performed cleaning tests, including methods of removing coatings, supervised mockups and developed methodologies for concrete repair and patching for the Administration Building. BCA produced specifications and bid documents for the restoration work at 177 Huntington and provided construction administration in coordination with Boston Landmarks Commission.