In early 2000 and during some years forward the transport administrations in Sweden and Norway and several material suppliers as well as authorities initiated and performed works in order to develop handbooks on the use of alternative materials such as waste and by-products. Do the handbooks and guidance documents change the use of alternative materials? Are there technical or environmental issues that need to be further elaborated to either promote or limit the use? Are there any key success factors where the provided guidance has supported the key stakeholders? In this paper the authors give an overview on the work performed upon a Stakeholder opinion assessment. All in all the study indicates that co-operation, communication and information are key factors for a successful use of alternative materials. A key baseline is that the material provides good technical function to the end-user. With good quality assurance of such materials, an improved material supplier perspective on client needs, an open mind to development of new constructions, a developed use of life cycle per-spective in practice and a policy on assessment of hazardous substances and resource aspects is a key for optimizing the future material supply for the built society.