BCA was the restoration consultant for the 1993 restoration of the interior. The Ed Sullivan Theatre, located in Midtown Manhattan's Theater District, is famous for hosting the The Ed Sullivan show and several CBS Late Night shows such as "Late Night with David Letterman" and the current "The Late Show with Stephen Colbert". The building, Originally known as the Hammerstien Theatre was built from 1926-1927 in the Neo-Gothic Style by Herbert J. Krapp is listed on the National Register of Historic Places and the interior is a Designated New York City Landmark. The building features terrazzo floors, vaulted plaster ceilings, marble, bronze, and cast iron.

BCA was the conservation consultant to the architect for interior restoration of decorative plaster, stained glass, marble wainscoting, and decorative metals. Because of the interior landmark status of the theater, BCA documented all existing conditions and architectural features before work began, including on-site identification of finishes and paint colors.