In 2018, the construction sector in Sweden accounted for an emission of 17.7 million ton carbon dioxide equivalents, which corresponds to 21 percent of Sweden's total greenhouse gas emissions. The emissions have a negative effect on the climate due to global warming of the planet. Due to the negative climate impact from the construction sector, a climate law was introduced in 2018, which aimed for the government to present a climate report in the budget bill with the Climate Act. A roadmap was also established and created for the construction and civil engineering sector, which includes various goals for achieving a climate-neutral industry by 2045.This study aimed to investigate how the construction industry works to reach the climate law and the Paris Agreement and to become climate neutral in 2045. The purpose of the study was also to examine how the construction industry works today and what is required in the future to reduce the use of fossil materials and transport, and what obstacles exist. The data collection was obtained through five structured interviews from four construction companies, each of which manufactures construction machinery. The answers were then analyzed and compared, and finally compiled into three different areas, materials, transport, and design.According to the interviews, the companies work in different ways regarding materials and transport. They focus on both production and method changes to reduce climate impact during the process. At the same time, the constructions are optimized and changed by reducing the fossil materials because they have a high climate impact. The companies work continuously to use more fossil free fuels for the transportation to the construction site as hydrogenated vegetable oil (HVO100) and demand that they be used within the company, but also by suppliers and subcontractors.It is noticeable that the companies have different working methods regarding materials, transport, and design to achieve the climate goals and the Paris Agreement. At the same time, some of the work to reduce the climate footprint from the construction industry is very similar between the companies. A common factor for companies is that they mention that the customer's choice of construction is of great importance for how low or high the climate footprint of a building will ultimately be. The companies also set requirements internally in the company where they consider themselves able to influence the climate footprint by using materials with Life Cycle Analyzes (LCA), set requirements for suppliers and build under their own auspices so as not to be affected by the customer's choice of materials in buildings. The study covers companies' working methods with regards to the climate footprint and describes the obstacles that exist to achieving them.