National Historic Landmarks Preservation, Conservation, and Restoration

John Canning & Company has had the pleasure and privilege of working on some of America’s most recognizable and prestigious landmarks. We understand that it is imperative to ensure historically accurate conversation in these revered national treasures.


Our principals are Professional Associates of the American Institute for the Conservation of Historic and Artistic Works (AIC). We are guided by the principles of “do no harm,” reversibility of treatments, and documentation.

US Executive Office

Landmarks - EEOB

Louis Kahn Bath House

Landmarks - Louis Kahn Bathhouse

John Canning & Company considers it a privilege to restore and conserve monuments of the past, preserving them for the future and bringing forth to a whole new generation the beauty and glory of ornament and decoration in architecture.