Diana Marsh, AICP, specializes in design and planning practices for walkable, compact, and sustainable communities. Her interests lie in the interaction between land use patterns, urban design form, and transportation planning and travel behavior. For over 20 years, she has worked on a wide variety of projects at all scales, from individual sites to entire regions, with a special focus on urban infill, transit-oriented development, and redesign of suburban areas for more efficient and pedestrian-friendly development. She has worked at Calthorpe Associates, EDAW (now AECOM), Phillips Preiss Grygiel Leheny Hughes, and the Cecil Group (now Harriman), and has collaborated with staff at ARUP and other firms.

She has worked on and managed numerous projects in California, the New York / New Jersey / Connecticut Tri-State region, and Massachusetts and New Hampshire. Her work includes downtown revitalization plans, station area plans, corridor plans, redevelopment plans, suburban area plans, citywide master plans, vision plans, regional plans, parking studies, development review, zoning codes, and design guidelines. She has extensive experience working both for municipalities, helping to ensure that new development enhances the public realm; and for developers, helping to maximize yield while creating a high-quality project that benefits the local community. She has expertise in LEED, green building, green streets, new urbanism, and transit-oriented development (TOD).

Ms. Marsh also specializes in the use of Geographic Information Systems (GIS) for analysis of alternative land use development scenarios and regional planning, and SketchUp software for  modeling of massing and building form alternatives. Ms. Marsh has a strong background in public infrastructure, water resources, and environmental resources planning. She draws upon these multidisciplinary skills in her efforts to improve the livability and sustainability of the built environment.

Some of her projects are listed below. Unless otherwise noted, most of these were done for Phillips Preiss Grygiel, LLC:

  • Claremont, New Hampshire: downtown parking study to identify usage patterns and boost efficiency and supply while maximizing infill and redevelopment (for The Cecil Group)
  • Concord, Massachusetts: downtown Wayfinding Study (for The Cecil Group)
  • Facade Design Guidelines for historic Clinton, Massachusetts (for The Cecil Group)
  • Woodbridge, New Jersey: Downtown Vision Plan (2016)
  • Woodbridge, New Jersey: Avenel Redevelopment Plan for a mixed-use arts district and multi-family housing next to NJ Transit station (now under construction)
  • Plainsboro, New Jersey: Hospital Redevelopment Plan (now under construction)
  • Morristown, New Jersey: Rehabilitation Plan for Morristown’s Epsteins Area, on the Town Green and near a train station (now built)
  • Fort Lee, New Jersey: Redevelopment Plans for Area 5, high-rise residential, a retail cluster, structured parking, and open space
  • Wallington, New Jersey: two redevelopment plans for apartments near a NJ Transit station
  • Cranbury, New Jersey: Redevelopment Plan for the Cheney / Hagerty / Kushner Tract, residential townhouses and mixed-use retail/apartments with open space (under construction)
  • Sea Bright, New Jersey: Downtown Master Plan to strengthen downtown retail, improve pedestrian safety and comfort, and allow for limited infill
  • Montvale, New Jersey: design, site, and architectural guidelines for a new 7-Eleven store (now built)
  • Islip, Long Island: draft Heartland Town Center Master Plan, a 450-acre site of former Pilgrim State psychiatric hospital, proposed for a series of residential neighborhoods, a retail core, an office district, various open spaces, and a walkable network of streets
  • San Mateo, California: Rail Corridor TOD Plan for a large area between two Caltrain Stations (for EDAW)
  • Fullerton, California: design guidelines for a large new neighborhood of single-family homes and a retail area, Amerige Heights at Sunny Hills (for Calthorpe Associates) (now built)
  • Numerous yield studies, site plans, and design guidelines for private developers