Abstract Urban environments, such as parks, play a crucial role in shaping the health of their residents. However, the relationship between parks and health remains inconclusive. This workshop will present findings from the Physical Activity and Redesigned Community Spaces (PARCS) Study that examined the community health impacts of the Community Parks Initiative (CPI), a citywide park equity initiative of the New York City Department of Parks and Recreation (NYC Parks) that led to citywide park redesign and renovation across 67 low-income neighborhoods in NYC. Using a quasi-experimental design with socio-demographically matched control parks, we evaluated longitudinal changes in park use, physical activity, and psychosocial well-being as a result of CPI. There will be a total of 3 presentations. The first presentation will focus on the impact of CPI on park use before and after park renovation, relative to control parks, using data collected from the System for Observing Play and Recreation in Communities (SOPARC). Results showed that CPI led to a significant net increase in park use, especially among adults. The second presentation will report on changes in perceived stress pre- and post-renovation among adults. Results showed that a greater decrease in perceived stress was associated with a sustained high or increased park use frequency in the context of high-quality CPI intervention parks. In contrast, the same association was not found in lower quality control parks. The third presentation will showcase a study that demonstrated a significant increase in children’s physical well-being, a dimension of quality of life, at CPI vs. control sites. The analysis also showed that children in the lowest socio-economic group might have benefited the greatest from CPI. PARCS is one of the largest intervention studies on the effects of park renovation on health. This workshop will engage participants in considering how these insights can be translated into actionable programs and policies in service of community health and health equity. Findings from PARCS will help inform future public health and urban planning interventions in the use of the built environment to promote population well-being. Key messages • Urban park renovations may contribute significantly to community health, demonstrating a vital link between the built environment and public health. • Investments in green spaces may enhance the physical and mental well-being of low-income urban communities, promoting social equity.