Environmental justice is a critical framework to engage with when working within urban communities, as all work done in the built environments directly impacts both people and the natural environment. New practices are still being established within urban planning, community development, and community organizing to support effective and meaningful environmental justice efforts. This research seeks to understand how urban communities can work towards environmental justice by increasing access to green space in historically underinvested communities without contributing to gentrification and resulting displacement. In order to answer this question, I made an annotated bibliography for 10 sources related to environmental gentrification and displacement prevention and conducted 7 expert elicitation interviews. The interviews were 45 minutes long, conducted over Zoom with professionals in the Puget Sound area who had expertise in park planning, community development, community organizing, and environmental justice. The interviews were recorded and transcribed, and then qualitatively analyzed through a grounded approach to thematic analysis by creating codes for recommended practices which were then used to extrapolate overarching themes, as well as important individual perspectives. Between the sources and the interviews, 4 recommended practices to mitigate environmental gentrification were identified: intentional community engagement during the park design process, collaboration across city departments, joint development of parks and affordable housing, and investment in neighborhoods beyond greenspace. This research both supports the understanding of environmental gentrification as an environmental justice issue, and presents practices for community organizations, park designers, city departments, and urban planners that can help mitigate environmental gentrification and displacement. It is important to note that environmental gentrification is very nuanced, complex, and context dependent, so the findings of my research will not be universally applicable. The findings of this research are primarily meant for Lake City Collective (LCC), a community organization in North Seattle, by providing them with information that can support them in ensuring that their environmental justice work directly benefits the people they serve and does not have unintended consequences.