Accounting for nearly 40% of global energy-related CO2 emissions and sometimes as much as 70% in large cities, buildings and construction are central to the low-carbon transition. Decarbonising buildings, especially the old stock, through energy efficiency improvements and renewable energy use, not only reduces carbon emissions, but also generates co-benefits in health, energy affordability and the labour market.

Accounting for nearly 40% of global CO2 emissions and sometimes as much as 70% in large cities, buildings and construction are central to the low-carbon transition. Decarbonising buildings, especially the old stock, through energy efficiency improvements and renewable energy use, not only reduces carbon emissions, but also generates co-benefits in health, energy affordability and the labour market. Additionally, global mega-trends and the transition to a green recovery from COVID-19 provide impetus for stakeholders to take action. Cities and regions have a key role to play and can leverage prerogatives in regulation, public procurement and stakeholder engagement, while addressing multiple governance, capacity and funding gaps. To accelerate and scale up their action, cities and regions need to work with national governments to create an effective governance mechanism. Drawing on the findings of a dedicated survey of cities and regions of all sizes from both OECD and non-OECD countries, this report explains their significant role, explores sub-national policy measures, identifies key obstacles, and provides policy recommendations and a checklist for both national and subnational governments to drive the decarbonisation of buildings in cities and regions.

With a foreword from Paul King, Chief Executive, UK Green Building Council and Chairman, Zero Carbon Hub As concerns over climate change and resource constraints grow, many cities across the world are trying to achieve a low carbon transition. Although new zero carbon buildings are an important part of the story, in existing cities the transformation of the current building stock and urban infrastructure must inevitably form the main focus for transitioning to a low carbon and sustainable future by 2050. Urban Retrofitting for Sustainability brings together interdisciplinary research contributions from leading international experts to focus on key issues such as systems innovation, financing tools, governance, energy, and water management. The chapters consider not only the knowledge and technical tools available, but looks forward to how they can be implemented in real cities by 2050.

Cities are crucial for national economic, social and environmental performance. A national urban policy (NUP) has been recognised by the international community as an important instrument for harnessing urbanisation to achieve national and global goals. This report, prepared for the United Nations Conference on Housing and Sustainable Urban Development (Habitat III), provides an assessment of the state and scope of NUPs across 35 OECD countries. It also describes how urban policy, and its place in national political agendas, is evolving. This publication has been prepared for the Habitat III conference and builds on existing United Nations Human Settlements Programme (UN Habitat) methodology. It is inspired by the joint work of UN-Habitat and the OECD following their co-leadership of Policy Unit 3 on National Urban Policies during the preparations for the New Urban Agenda. The findings of this report will contribute to the global monitoring process of National Urban Policy, as will the Global Report on National Urban Policy, jointly produced by UN Habitat and the OECD.

This book shows how city and metropolitan regional governments working in tandem with national governments can change the way we think about responding to climate change.

Building on broader OECD work on climate, this report proposes a new OECD territorial climate indicator framework and demonstrates that the potential to mitigate greenhouse gas emissions, adapt to climate impacts and address vulnerabilities vary across different territories, by using a new OECD territorial climate indicator framework.