The aim of the article is to understand more about the potentials of citizen participation in planning. The research project in focus was conducted in a stigmatized Swedish context and was participatory in approach, including local interaction activities, case-based participant observation and key informant interviews. The project aim was to develop knowledge about the interplay between top-down invitations for dialogue and bottom-up citizen initiatives. Two cases are discussed in relation to previous research on participation. The participatory process was shown to influence how ‘socially responsible public procurement’ of a construction project was carried out, and hence the article concludes that citizen participation in design can influence systems and procedures. The question of how such knowledge and awareness can develop the planning profession ends the article