In many cities, housing has become so unaffordable that large segments of the population, particularly young adults and low-income families, are unable to buy or even rent adequate accommodation. What are the causes of this problem? What measures could be taken to solve it?

• ・Should governments build more social housing, or encourage the private sector to increase supply?
• ・Is foreign property investment a primary driver of housing unaffordability in major cities?
• ・How does housing affordability affect a country's economic productivity and social cohesion?