John D. Lesak, AIA, FAPT, LEED AP, is a Principal with Page & Turnbull and manager of their Los Angeles area office. With an interdisciplinary education in architecture, engineering, and materials science; John has been able to specialize in the preservation, rehabilitation, repair, reuse, and maintenance of historic structures since 1993. During the course of his career, he has been privileged to serve as a historic architect on a number of award-winning preservation projects - including the exterior rehabilitations of the Wisconsin State Capital & Los Angeles City Hall, the relocation of the Cape Hatteras Lighthouse, and the restoration of the spire at the Frank Lloyd Wright designed Marin County Civic Center. He has co-authored published papers and lectured on seismic impacts, deterioration mechanisms and restoration of historic cladding systems. Concerns over the socio-cultural impact of environmental degradation lead John to co-found and serve as past US-chair of Association of Preservation Technology International (APTi’s) Sustainable Preservation Technical Committee. John has written and/or lectured on the relationship between green building and historic preservation for the APTi, Traditional Building magazine, the National Trust for Historic Preservation, the California Preservation Foundation, and the Municipal Green Building Conference and Expo. John is the Past-President of the Western Chapter of APTi; recently served as Chair of APTi’s Annual Conference in Los Angeles; is a mayoral appointee to the South Pasadena Cultural Heritage Commission (serving a Chair in 2008-9); is a Director with the South Pasadena Preservation Foundation; and serves on the Los Angeles Mayor’s Design Advisory Panel.