This toolkit has been developed during the implementation of Urban Green Belts (UGB) project (Interreg, Central Europe) which main objective was to improve planning, management and decision-making capacities of the public sector related to urban green spaces, thus creating integrated sustainable UGS planning and management systems. Special attention was given to functional urban areas (FUA), a functional economic unit characterised by densely inhabited “urban cores” and “hinterlands” whose labour market is highly integrated with the cores. Following a comparative situation analysis, the partners jointly designed innovative methods and tools to facilitate sustainable UGS management. Presented toolkit has been primarily developed as a Model for a Community Involvement. The presented methods and tools for community building were tested in three pilot studies conducted in Maribor (Slovenia), Krakow (Poland), and Budapest (Hungary).