MICHAEL D°ONOFRIO, principal
Michael D'Onofrio has over fifty years of experience in the restoration and rehabilitation of historic residences in the Philadelphia Main Line. His fine craftsmanship or goût du travail bien fait derives from a family line of European mechanics and artisans. Traveling extensively throughout Europe, Asia, and Central America, he has cultivated a discerning eye for scale, color, and texture. Michael is a recognized local expert in diagnosing roofing pathologies and personally oversees all restoration projects. He is also a preservation scrounger, like James Garner in The Great Escape, with an extensive network of contacts, suppliers, and architectural salvage yard proprietors; and can easily locate replacement parts and traditional building materials that most contractors would otherwise replace with something from Home Depot.
MARK D°ONOFRIO, director of conservation
Mark D’Onofrio is a materials conservator, an architectural historian, and a preservation technologist. Educated in archaeology at the University of Vermont, and later in architectural conservation and urban design at PennDesign, where he received both a Master of Science in Historic Preservation and a Master of City Planning, Mark manages daily operations for MDHR and has personally directed the conservation or rehabilitation of hundreds of residential estates, historic townhouses, objects, vernacular structures, and archaeological sites in the Philadelphia Main Line; as well as co-founded Passenger Pigeon X, a modernist-inspired international branding / graphic design collective in Philadelphia, Nantes, and Genoa; and Main Line Francophone, an urban oenology retreat / wine consultancy for which he serves as an urban guide during the summer months.
Mark is currently interested in the preservation of both modern heritage and the more indigenous and organic Architecture without Architects; a member of several preservation organizations, including ICOMOS, Docomomo, the Association for Preservation Technology (APT), the American Institute of Conservation (AIC), the Society for Industrial Archaeology (SIA), and the Society of Architectural Historians (SAH); a tinkerer of aerial drone technology for remote building diagnostics and site surveys; and, as a third-generation Philadelphia Main Line roofing contractor and long-time member of the National Slate Association, a traditional roofing expert.