Singapore's density seems to be comparable to that of Hong Kong. But their model is quite different.
"Hong Kong’s housing is the most unaffordable in the world. Median income households have to spend 20 years of their earnings to buy a 60 square metre flat at an average cost of $US1.24 million. But sadly, it is the only choice for many households. In 2016, nearly 100,000 households with over 200,000 people resided in SDUs"
The living space of SDUs is tiny and cramped. The median per capita floor area of accommodation was 5.3 sq m in 2016.
In addition to limited living space, other issues such as fire safety, environmental hygiene, water seepage and messy electrical wiring also add to the substandard living conditions of SDUs.
