Dr. Barth has worked for the City of New York since 1981. She held many positions at the Department of City Planning, including directing the development of the Consolidated Plan for Affordable Housing Funding for New York City. From 1999-2001, she served as the Special Assistant to the New York City Housing Authority Chairman. Her work at NYCHA also included Acting Director of Development 2003-2004; Director of Planning 2004-2006; developed the Local Law 11 Division in 2008, among other positions. She has been an active in the National APA, NY Metro APA Chapter, and the APA Planning and Women Division since 1981, organizing panel discussions and events at the National and Local venues.