The construction and destruction of buildings amounts to approximately 40% of the world's total carbon footprint. Our communities, limited by space, will choose to tear down buildings and pave over wildlife. Over 4 billion people–half the world’s population–live in urban environments, and urban sprawl is only increasing. In many countries, housing prices are skyrocketing. With the repurposing of infrastructure, these issues can be reduced: empty factories and closed down power plants will become new parks, clean energy hubs, and affordable housing. Instead of building outward, communities can build up, constructing sustainable cities and aiding in the success of SDG 11. 

 

Repurposing abandoned spaces, however, is not always easy and affordable. Many of these locations are brownfields, meaning they contain old industrial chemicals that increase costs for repairs. Additionally, legal battles come with the inspection of old infrastructure, as building codes are outdated, and structures are unsafe. It takes time and labor to convert an old warehouse into an apartment complex–which many cities simply do not have.

 

The future of cities worldwide should prioritize the better use of existing structures, in order to achieve climate goals and create liveable environments. Delegates will identify issues within their countries, propose realistic solutions, protect communities, and collaborate to allow all countries to develop with people in mind.