Various tools can be used to promote Green Roofs at the municipal policy level. These include, for example, regulations in specific land-use plans or Green Roof bylaws. Financial and non-financial incentives like Green Roof grants, tax reductions or a density bonus add to the Green Roof Policy Toolkit which, together with public relations, education and research, could provide ideal support for municipal Green Roof strategies. It is also important to set a good example by making the roofs of municipal buildings green. In general the different tools can be assigned to the three major categories “Regulations”, “Incentives” and “Public Relation and Education”. Because the different instruments can support and complement each other an efficient municipal "Green Roof strategy" should consider all three categories. In the following some of the most common Green Roof Policy tools and the Green Roof strategy development process are described briefly.