改造以提高弹性（英）

Radical retrofitSupported byAdapting cities for a resilient future© Economist Impact 2025Radical retrofit: adapting cities for a resilient future2Contents3 JLL foreword5 About the research6 Executive summary and key findings8 Chapter 1: Introduction: retrofitting for urban resilience10 Chapter 2: Building for resilience: what is driving retrofitting progress?20 Chapter 3: Behind the brick wall: why retrofitting momentum lags23 Chapter 4: Race to renewal: building retrofitting momentum to 203030 Conclusion32 Acknowledgements33 References© Economist Impact 2025Radical retrofit: adapting cities for a resilient future3JLL forewordWhat’s in a skyline? More than a backdrop to life, every building plays its part in how our cities function. From offices where we craft ideas and factories where machines make and move the goods we depend on, to hospitals where we care for one another, campuses where we share wisdom, and sports venues where we redefine what it means to be human—today’s buildings make our lives possible. But in our rapidly growing cities, many of these buildings are showing their age. We know that roughly half of all global workspace will require substantial investment soon—it could take upwards of US$1.2trn1 in capital expenditure to bring those workplaces up to today’s standards. And that’s just the office sector.Today’s leaders across government, business, real estate and sustainability stand on the verge of key decisions over the real estate we see today—and the vision we hold for the spaces of tomorrow. The key question to explore: how can our built environment shape more livable cities with safe, sustainable, and climate-resilient infrastructure, while also supporting business imperatives? In a word, retrofitting. New research makes a powerful case for ‘radical retrofitting’ across the globe. Led by Economist Impact and supported by JLL, this report shows how momentum is growing for demand-driven retrofitting, but adoption is far from where it needs to be. Cynthia KantorCEO, Project & Development Services, JLL1 JLL Research, “Opportunity through Obsolescence”, November 18th, https://www.jll.com/en-uk/insights/opportunity-through-obsolescence 2024© Economist Impact 2025Radical retrofit: adapting cities for a resilient future4Demand for high-performance buildings consistently outpaces supply worldwide, propelled by escalating energy costs, changing building regulations, and economic forecasts pointing to higher future resource prices.Strategic retrofitting extends asset lifespan and delivers measurable ROI. In fact, even moderate retrofits can result in energy cost reductions of between 30% and 60% along with significant rent premiums. Upgraded properties attract prize tenants and talent looking for productive environments, while awarding investors and lenders with a reduced risk profile. Building upgrades represent not just incremental improvements but a transformation in how we conceive, value, and utilize built environments across the