Trust is an essential if often implicit aspect of co-design particularly when working in community-based, political and sensitive settings. Current co-design literature, however, remains fairly limited focusing on interactions between people as primary agents of trust. Drawing on research conducted with a poverty alleviation charity based in the UK, we illustrate how trust and distrust can also be mediated through material resources used in the codesign process. The paper highlights the significance of materials in negotiating the interdependencies of trust, in how distrust can be leveraged and trust can be supported through sensitive sociomaterial exchange conducted with resource limited community organisations.