Cities are key players in minimising the use of resources and in developing the circular model. Generally, municipalities provide utilities and control public services for citizens and businesses that influence the majority of resource and energy use and the production of emissions and waste. Local authorities have the capacity to implement responses at multiple scales. This report analyses both the supply and the demand issues. It is divided into two parts: the first is devoted to how to avoid, prevent and reduce the use of resources; the second addresses reuse, recycling and harvesting.