Ventures in developing communities often fail because of the disconnect between the designer, the implementer and the end-user. Finding the optimum distribution of time, money and sweat equity to be shared by the communities and partnering organizations is essential to achieving sustainability. This paper discusses the "E-spot" model, which seeks to identify the right players within the venture, define their individual roles, and define what form of equity they might offer towards fulfilling the overarching objectives of the venture, while meeting their own objectives. This exploratory research effort is an attempt to develop the model, and a design space exploration tool based on the model, that enables stakeholders to allocate resources, split equities among them, successfully place technologies on the ground, and optimize opportunities to sustain their projects socially, economically and environmentally. This paper will discuss the model and simulation results for application of the model to infrastructure-based social ventures.