Contractors are expected to present their sustainability work in connection with procurement. But what is required is not always clear. The client could for example ask what the contractors are doing to contribute to environmentally or socially sustainable development. This pre-study surveys how the clients set requirements for sustainability work in procurement today and how the contractors respond to these requirements in their tenders, but also how the contracting companies work with sustainability in practice. The contractors hope that the concepts and requirements used in sustainability work will be clearer, more rigorous and easier to live up to so that they can truly contribute to a sustainable society. They would like to see it as a long-term work where they build up skills and routines in many projects instead of just a few pilot projects. Based on the results, the need of new tools or better use of existing tools to strengthen the work on sustainable construction projects were identified. The pre-study is carried out mainly through interviews with representatives from 15 companies as well as analysis and discussion of the answers during one workshop.