One-fifth of America. That’s the fraction of the population living in America’s inner suburbs, places that by definition border our largest cities and have a housing stock half or more of which is pre-1970. Many are experiencing social, economic, and environmental decline owing to poor land use planning, aging infrastructure, deindustrialization, and the deconcentration of poverty from city to suburb. This is certainly the case in Baltimore County where NeighborSpace has been working for 20 years. In fact, an entire book has been written chronicling the decline of the County’s inner suburbs. This decline has provoked calls for “retrofitting” the inner suburbs, redesigning existing communities into more sustainable places. In this workshop, we will show how open space figures prominently into this debate, a discussion in the forefront currently because of the County’s decennial update of its Master Plan and related laws and regulations. NeighborSpace has been a key player in the current debate, owing to the depth of expertise among its board and staff in the areas of design, planning, and law. We have argued that for retrofitting to succeed, County laws, policies and budgets must evolve to embrace open space as an organizing, networking, and place-making element that shapes and enhances communities and has good equitable access for all. This workshop will highlight specific principles, policies, and practices necessary to achieve this vision and the benefits of doing so.