John Canning & Co. is an architectural arts restoration contractor with over 50 years of experience. Working across the country, we are one of the nation’s experts in historic restoration, conservation, and preservation.  John Canning & Co. is a building arts expert specializing in services in the architectural arts and finishes, such as ornamental plaster restoration, plaster stabilization, decorative finishes, gilding, historic woodwork, and stone, as well as exterior services of architectural gilding and selective decorative finishes.