Chuck and Daniel Herriges' are about to release their book, "Escaping The Housing Trap". It's a great delve into the housing crisis in North America, and what's causing it, including the part that's almost never mentioned in the media: car dependency.
You can pre-order a copy now via the links on their website:
On thing Chuck, we can call him that right, mentioned in a recent clip of his, is that some forms of housing finance for rentals create price inflexibility.
Something about interest only loans as I recall. Lower rent devalues their property, putting landlords into financial stress.