This Handbook has been prepared to provide local governments and other interested parties with an overview of climate finance mechanisms, both existing and in development, and their relevance to the built environment and the urban context. The objectives of this Handbook are to help raise awareness among local stakeholders regarding climate finance and its potential in the built environment, given the important role that this sector has to play in climate change mitigation. It also aims to help local governments to use climate finance mechanisms as an opportunity to increase the energy performance of their district whilst creating additional revenue, improve resource efficiency and support their wider climate strategies.