Collaborative governance or, in the context of this paper, cross-sectoral collaboration between the water and urban planning sectors, is about sharing information, activities, capacities, resources and decision making between multiple actors to realise a set of outcomes that would be difficult to achieve separately. Establishing such collaborations is a complex task. This paper offers some guidance for designing cross-sectoral collaborations to deliver water sensitive solutions. It highlights some of the key elements that need to be considered, as well as provides some tools or tips to assist with this.