This toolkit is designed as a first step in helping countries, cities and experts in developing, adopting and implementing their codes. In its present form, this toolkit is set out as a useful reference, but also as a means of assessing the potential of such information to help governments and other stakeholders. The toolkit covers five main topics: guidance for cities and jurisdictions that are just getting started, and tools that can provide inspiration and knowledge regarding code development, adoption, implementation and evaluation. However, this toolkit is also a research aide, helping understand where there may be gaps in information content or form. It can also be used to test the potential for scaling up of building energy code deployment using simple, replicable types of information sharing.