Last week, voters in San Francisco voted against a measure to compel the city to set aside $30 million for affordable housing. Opponents of the proposal argued that "the city already has spent more than $200 million on affordable housing in the past several years, and is building more units - some affordable, some not - than anytime in recent history." (1) San Francisco is not alone; government at all levels seeks to provide housing assistance for the poor.
But at the same time, government zones and rezones property to protect "property values" (2) - in other words, to cause home prices to increase over time rather than decrease. So government makes housing expensive with one arm while trying to provide affordable housing with the other.