COSCO’s main objective is to develop a new model for out-of-school care, that offers high-quality and usable, inclusive and accessible activities for children and families, and supports transitions between school and leisure for children and between employment and family for parents. To create a service that answers to the needs of local families, we test new methods that are based on the idea of “commons” (e.g. Bravo & De Moor, 2008). Commons (or common-pool resources) can be defined as a social practice of governing a resource, not by state or market, but by a community of users and stakeholders that self-governs the resource through institutions that it creates. New important uses of commons should be tested on ecological and leisure services, especially for vulnerable neighbourhoods. Therefore, we aim to (1) set up new after school networks or ‘commons’ in vulnerable neighbourhoods for improving the work-life balance of families. (2) From these new commons, we will co-create collaborative networks in order to support the after school needs of the families. By co-creating leisure activities for the children and solving the mobility and scheduling issues of the parents, families can self govern their work life balance better in collaboration with the community. (3) In order to make the project results sustainable and applicable in other contexts, we will upscale the developed family oriented methods for neighborhood commons on work-life balance in a handbook, and formulate policy recommendations on the local, regional and European level.