How much of San Francisco's rental stock is on the market at any one time? 1% could represent a very high percentage of it. I'd also be interested in knowing

How much of San Francisco's rental stock is on the market at any one time? 1% could represent a very high percentage of it. I'd also be interested in knowing what the conversion rate is - in other words, if a rental unit becomes vacant, how often does it become an airbnb rental unit? Here's an more detailed overview of this problem: "While there are many larger underlying contributors to the housing shortage in San Francisco, it is possible that Airbnb adds stress on the margins." http://techcrunch.com/2015/06/11/airbnb-and-the-problem-of-data/ http://techcrunch.com/2015/06/11/airbnb-and-the-problem-of-d...