Green buildings represent a major global investment opportunity, with buildings making up the largest segment of the US$ 231 billion energy efficiency market. In the European Bank for Reconstruction and Development (EBRD)’s countries of operations, buildings also represent a challenge. Currently, building renovation rates and practices in these countries are far below Paris Agreement targets. Furthermore, most of these efforts are not cost-optimal due to capacity and supply-chain limitations, as well as regulatory and policy constraints. Combining a decade of green finance experience with technical assistance and policy dialogue, the EBRD’s Green Economy Transition (GET) approach aims to turn green building challenges into solid investment opportunities with clear economic, environmental and social benefits.