I understand London has a similar problem.
True... House prices all over the U.K are at insane rates. But it's very bad in London (for the price of a bedsit flat in Central London, you can get a nice Semi where I live. Daft)
A bit like Switzerland really... the Swiss Government(s) lure poor immigrants from wherever is especially poor at the time to do all the dirty jobs, play them poor wages (which given how much things cost in Switzerland is a truely evil thing to do) give them significantly less rights than the rest of the population, make them live in poor housing, never grant them citizenship if they can avoid it... and if there's a recession they deport most of them. Then lure them back later. Often the same people. And so the cycle starts over.