Theory of Urban Planning and Development has been open to integrating other models and practices towards the goal of developing better and sustainable cities. In context of this progressive and open assimilatory thinking, this paper discusses the concept of symbiosis and model of eco-industrial park as a resource for enhancing urban-planning discourse. The paper delineates the scientific theories of symbiosis, resource loops, equilibrium, diversity pattern, hierarchy, metapopulation and island biogeography, as the most pertinent resource for drawing lessons on planning a Symbiotic city and recommends further in-depth study for selection of principles that can be directly integrate with and inform the theories and practice of urban planning.