To map the existing range of tools and to facilitate building energy efficiency improvements, this working paper presents an overview and categorization of current tools, as well as offers a decision tree, illustrating the types of tools policy and project development in the field of energy efficiency in buildings. This working paper aims at guiding local policy-makers, technical experts and other relevant stakeholders through the key steps of the policy and project development process through utilisation of publically available tools, helping them to navigate among various information sources on energy efficiency in buildings.