Young people are an important group in the cities, but young people's perspectives are not always included in processes for urban planning. The interdisciplinary research project Planning with youth (2019-2024) funded by FORMAS examines how youth can be involved in the work of planning the city's change by exploring new methods. The aim of the project is to elaborate on meaningful participation, justice and novel ways to engage youths in governance of urban living environments. Scientific literature on spatial planning recognizes diversity of needs and the importance of inclusivity when seeking to make public space safer, secure, and greener. However, young people’s voices are often missing in the planning of our living environments, especially in ethnically and socio-economically diverse communities. Recently, the child convention law promotes planners to involve youth in addition to the normative expectation of having more inclusive planning. In turn, there is a knowledge gap on how different participatory tools allow young people to reflect upon and express their needs, values and preferences about green-blue infrastructure. The project in this position statement seeks to fill this knowledge gap by 1) mapping current challenges and questions planners face in relation to the involvement of youth in planning, 2) testing and comparing participatory tools with different groups of young people, and evaluate if/how they are allow to express their preferences and needs, and 3) creating a framework with recommendations on how to engage youth in the design of green and blue public space, to support planners and other practitioners. This has been done by testing and elaborating on digital gaming activities, artbased activities and creative workshops, and we would like to share the insights from these activities in line with the theme of sustainability and inclusivity.