Retrofit at Scale

Retrofit at Scale, developed by Gensler and Opportunity London, presents a comprehensive strategy for scaling retrofit across London’s built environment. Drawing from multidisciplinary collaboration, the guide identifies five core pillars critical for change: Design & Delivery, Education, Policy, Behaviour & Attitudes, and Value & Demand. Each pillar outlines current barriers—such as fragmented data, lack of policy clarity, and skills gaps—and proposes solutions to mainstream retrofit as a viable, attractive alternative to new build.

The report advocates for stronger data ecosystems, retrofit-specific finance models, policy alignment, and public engagement. It calls for defining retrofit as a distinct asset class, rethinking value through ESG and lifecycle metrics, and shifting cultural perceptions. By addressing systemic inhibitors—through improved regulation, education, transparency, and incentives—the guide aims to create market confidence, unlock investment, and reduce carbon emissions. Its overarching message is clear: retrofit must become the default strategy if London is to meet its climate and urban development goals.