Between year 1961 and 1975 were about one million homes produced, which today is called the million programme. These homes are now in a great need of renovation as they contain hazardous substances in the materials, unnecessarily high energy use and they are in critical technical condition. Purpose: of the degree project is to identify how we can become increasingly sustainable in ROT-projects within the million programme areas. The degree projects studies among other things how a renovation will be sustainable, materials and waste impact, about the million programme rebuilding needs and rebuilding needs of low-energy houses in the million programme. The method: The degree project is based on a literature study, a questionnaire study and an interview study. The literature study has been carried out to gain an increased knowledge of how a ROT-project works and facts about the million programme. The survey consisted of questions about what the environmental work looks like in various ROT-projects. Entrepreneurs working on ROT-projects, landlords who manage housing in the million programme and tenants who live in the million programmehave participated in the survey. An interview study has been conducted with various ROT-entrepreneurs and landlords to get an overview of how the work of the million programmehas looked environmentally. The result: The million programme leak large amounts of energy and heat. Older have shown that greenhouse gas emissions and energy use have increased, so the need for renovation is becoming more apparent. Sustainable renovation is needed to reduce the negative environmental impact of greenhouse gas emissions and energy gas. In a construction process does material production have a major impact on the environment. When it comes to material selection and waste management is an important aspect for the environment within a ROT-project. In order to be able to work in an environmentally friendly way, it is necessary to plan in detail about various factors when handling the use of materials. The various factors are inventory, waste sorting, ordering materials in the right dimension, choosing materials with regard to the environment and handling the materials well during the construction process. Conclusion: The million programme homes are energyintesive and require among other things trunk replacement, ventilation replacement, replacement of electrical installations, windows, balconies and facades. In order to renovate the million programme homes good knowledge is required about ay hazardous substances in the materials and what measures are required to make the homes more energy efficient.