The Massachusetts State House was designed by Charles Bulfinch in 1787 and completed in 1798. The Annex, designed by Charles Brigham, was added in 1895, and the East and West Wings were designed by Sturgis, Chapman and Andrews and constructed from 1914 to 1917.

BCA performed a comprehensive survey of the interior of the State House buildings and contributed the Historic Value Rankings portion of the 2007 Master Plan. BCA has since worked on several other projects at the State House, including finishes study in the House of Representatives Suite, plaster conservation surveys in the House Chamber and Senate Reading Room, conservation study of the Senate ventilator grilles, and finishes analysis in the Senate Reading Room. BCA also conducted conditions survey, construction documents and project monitoring for the full, comprehensive restoration of the Senate Chamber.

Awards: Boston Preservation Alliance, Mass Historical Commission Award