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This report uses network analysis to examine 75 policy and finance instruments and 22 barriers to achieving net zero carbon buildings in cities. It identifies financial barriers as the most critical, particularly for residential buildings, and emphasizes that mandates (such as building codes) are central to the transition. The authors argue that capacity development and fiscal instruments must act as systemic enablers to make mandates and financial mechanisms effective.

This research paper by the Climate Policy Initiative serves as a foundational guide for the Cities Climate Finance Leadership Alliance to analyze challenges and priorities for decarbonizing the buildings sector. It outlines the global investment needs, the role of different financial instruments, and the specific regulatory and environmental contexts of Nigeria and Indonesia.