LCCbyg is developed by the Danish Building Research Institute (SBi) at Aalborg University (AAU) on behalf of the Danish Transport, Construction and Housing Agency. LCCbyg is developed by: Senior Researcher, PhD Kim Haugbølle, SBi/Aalborg University. Senior Researcher, PhD Nils Lykke Sørensen, SBi/Aalborg University. Software architect Peter Scheutz, Scheutz & Clementsen Design. LCCbyg is a tool that calculates the lifecycle costs for either an entire building or individual building components. LCCbyg helps decision-makers to compare two or more alternatives that have different cost profiles over time. It is difficult to assess whether a solution with high construction costs and low maintenance costs is cheaper in the long run compared to a solution with low construction costs and higher maintenance costs. The tool solves this challenge by calculating the net present value for each of the alternatives based on the types of costs that the decision-maker has chosen to include in the calculation. These two net present values can be compared, and the cheapest long-term solution term can thus be found. LCCbyg makes the work easier by automating calculations since the tool includes a number of default settings and values that caters for most needs. LCCbyg also gives the user the ability to tailor calculations to own purposes by changing a number of parameters, if the default values are not appropriate. For both public and private contractors and developers, the tool can support better long-term choices of appropriate solutions. LCCbyg include relevant costs from the operational phase in the assessments systematically and may, for example, illustrate the difference between different building energy frames. LCCbyg can help public clients in securing documentation for applying the statutory lifecycle costing assessments. The ambition is secure the public better and cheaper construction. Combined with a lifecycle costing strategy LCCbyg can help consultants to conduct systematic reviews for a limited number of alternative solutions and present them in a comparable format to the client. Likewise, contractors can benefit from using LCCbyg for project development or to assess alternative solutions during budget revisions after tendering. Manufacturers can use LCCbyg to define, assess and describe a business case for their products or systems in relation to competing products and systems. Thus, the gains in terms of savings during the operational phase can be made clear to customers. Disclaimer: Before using the tool, please consult the disclaimer (in Danish).