Cities with unaffordable homes a global trend
Quantitative easing has skewed property markets as those who qualify for low mortgage rates price out the ones who don't

Hong Kong has very pricey real estate. For the uninitiated (or the ignorant, if you happen to be local), most, i.e. 99 per cent of the 7 million-plus population reside in some form of high-rise apartments, be these public rental housing, public assisted ownership housing, or private ownership housing, ranging from the very basic to the very plush.
The 99 per cent of the remaining 1 per cent reside in some form of townhouse or semi-detached unit. Only perhaps 1 per cent of the 1 per cent can afford to have a detached house. Wooden huts on the hillside do not count, although these are now rare too.

So why are there such increases? The simple answer is quantitative easing, which means low mortgage rates, which in turn means the "qualified" households can take advantage of them, and which on the other hand means the "unqualified" households are priced out of the market.
You can imagine the societal grudge, whether rightly or wrongly - which is not the point here anyway - circulating in some quarters of the population, especially among the non-homeowners.
Even homeowners could find upgrading immensely difficult if not impossible.