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follow Patrick 2018 May 1, 8:15pm
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A 2016 academic analysis by David Albouy, Gabriel Ehrlich and Yingyi Liu estimated that, in general, rents decrease by 3 percent for each 2 percent increase in the housing stock. ...If our goal is to reduce the average market-rate apartment rent to 27.5 percent of median household income (the midpoint between the 25-30 percent range that is normal), that means reducing the rent from $43,200 to $24,895, a 42.4 percent reduction. Using our ratio of a 2 percent housing stock increase leading to a 3 percent decrease in rents, that means, keeping all else equal, the Bay Area would theoretically need to increase the number of housing units overnight by 28.3 percent. (Let’s round up to 30 percent to make the subsequent calculations more intuitive).In reality, of course, housing is not built overnight. It will take many years for the Bay Area to make up its housing deficit, so we need to take into account the underlying trend growth of the U.S. population over the intervening period.For example, if it takes 20 years to make up our housing deficit, and underlying trend growth for the U.S. population is 0.7 percent per year (15 percent over 20 years), and the average household size remains 2.3 persons, then the Bay Area will need to grow households 30 percent more than the amount of households needed to accommodate trend U.S. population growth (i.e. 30 percent more than the underlying 15 percent population growth), for a total growth of housing stock of approximately 50 percent over 20 years.
Why can't the hobos live in multi-story buildings, too? The hobos are not pooping on the street just to annoy other people, they do not have anywhere to go
Why can't the hobos live in multi-story buildings