This is advanced planning and research work in the field of historic preservation. An employee in this class serves as an expert in Philadelphia’s historic architecture and construction methods. An employee in this class leads a team of planners engaged in the design review of applications to the Philadelphia Historical Commission to alter, add to, and demolish historic buildings, structures, sites, and objects and the construction of new buildings in historic districts. Work includes nominating newly-defined cultural resources, participating in historic site surveys, identifying cultural resources eligible for National and Philadelphia Registers, performing research, and preparing appropriate nomination forms. Work includes advising property owners and community leaders on historic preservation methods, techniques, and tax incentives. An employee in this class consults with city agencies and others on compliance with federal, state and local legislation. Creating and presenting educational programs on historic preservation and the history of Philadelphia is a significant aspect of the work. Work includes assigning and reviewing the work of lower level employees and supervising all Philadelphia Historical Commission staff in the absence of the Historic Preservation Director. Work is performed under the supervision of the Historic Preservation Director.