Thinking about a solution to the housing mess I had been playing with this idea for a while:
Here is one government program to fix the housing crisis: buy and destroy homes.
While I did some math on this, I never wrote about it. Now Fabius Maximus makes the argument.
The core of the housing crisis is overbuilding, which has created an excess supply of housing units (broadly defined).
…
Many vacant homes will be destroyed, the fast track to fixing this
problem. Empty houses get vandalized, destroyed by the owners (spite
or insurance fraud), occupied by squatters or meth labs, or wrecked by
the forces of nature. In regions with net out-migration (e.g.,
Detroit) homes remain vacant for long periods, often abandoned by their
owners (valueless but costly due to taxes and maintenance). As anyone
familiar with the history of the South Bronx knows, empty homes acts as
an infectious blight that can devastate larger areas. After a decade
or two, the result can look like Dresden after the bombing in 1945.
There are excess houses on the market. These houses will decay without occupation and lead to slums. This will be expensive for their owners as well as for the communities, i.e the taxpayers.
Further these excess houses depress prices and they are the reason why the decline of house prices will go much further than necessary. Without supply destruction the prices for houses will be lower after the decline than before they bubbled up because of this excess supply.
So how much would the taxpayer have to invest to get rid of them?
According to the U.S. Census Bureau there are some 130 million houses in the U.S. but only 111 million are occupied. 14.6% are not occupied.
Here are the vacancy rates for rentals and for ‘owner occupied’ units:

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The graph shows how the Rental Vacancy Rate (pink, left scale) jumped from some stable 8% in the 1980s and 90s to 10%. The vacancy rate of ‘owner occupied’ units (blue, right scale) jumped from a long term 1.7% to 2.7%. There are simply too many houses.
To bring the vacancy numbers back to normal levels the excess supply, according to my calculations some 1.1 million of rental units and some 815,000* of ‘owner occupied’ units are excess, will have to be destroyed. (People who can not afford to own, will move back to rental units. So in reality one would destroy 1.9 million ‘owner occupied’ units and the rental excess would be diminished by people moving.)
The U.S. could easily buy the total of 1.9 million units and depose them. It could buy whole suburbs and tear them down. At a $100,000 average price per unit the current owner or mortgage holder would likely make a big loss so there would be no moral hazard.
The total price for the taxpayer would be $190 billion – i.e. small change in light of recent Treasury and Fed operations. Throw in a few billions for the current jobless craftsman who can tear those down and turn the energy wasting suburbs back into fields.
To do this will likely be cheaper than to take care of the consequences of decaying houses and a deeper fall of house prices and rents as necessary.
* numbers corrected – see the first comment