My masterwork is a vertical public space using a cooperative model, which draws on the fundamental principles of commoning, such as considering knowledge as an inexhaustible resource, sharing reproductive work and realising the significance of transitional spaces. The Hive is a community initiative that follows the principles of sharing economy. I raise this issue based on my thesis research, where I explored the evolution of the roles and functions of urban public spaces. The quality and quantity of public spaces and the say we have in how they are designed may lead to significant social changes, and, optimally, may strengthen local communities. I propose a design programme that can catalyse, together with architectural measures, the development of a collective system. The programme fits in the urban fabric of Újpest, where the suburban area, the housing estate and the industrial zone are closely connected. The location is the warehouse of the former Chinoin pharmaceutical company, which has been abandoned for 30 years. The 7-storey, monolith reinforced concrete structure will be brought back to life and filled with industrial, gastronomical and cultural functions.