 The current urban renewal guidelines, approved by the City of St. Louis, require that all new construction be built in a style similar to and compatible with the existing architecture.The LaSalle Park Neighborhood enjoys Federal Historic Status with homes that are considered to have neighborhood, city, state and nationwide architectural significance.Plans were filed by Ralston Purina Co. and Landmarks Association of St. Louis, Inc. in 1977 (revised in 1979, 1980, 1982) to establish the historic importance of the neighborhood architecturally.