The megacity growth inherently entails large-scale redevelopment and renovation projects. For cities to develop sustainably, such projects have to chime with a spatial development strategy. Thus, the existing legislation must be reassessed and harmonized. It is essential not only to coordinate the stance of authorities, private sector and civil society on this matter, but also to update the regulatory framework, boosting the efficiency and significance of law making in metropolitan development. ? How can legislation facilitate seamless and integrated metropolitan development? ? How do legal models adapt to meet today's urban development challenges? ? How to elaborate a regulatory framework for urban changes and a concerted legal position on urban development?