This report summarises the results of all four trialogues in the "Participation in housing construction" series. The description of urban conflicts and the analysis of current participation practices in Berlin are followed by an outline of the necessary framework conditions for participation in housing construction and concrete proposals for the organisation of informal participation in housing construction. On this basis, guidelines for participation were formulated for the state-owned housing associations. Following their public presentation, the guidelines will be trialled and evaluated in a one-year pilot phase.