I don't have a citation ready for SF; my recollection from the last anti-airbnb ballot campaign that a leading opponent of airbnb (Campos) claimed a figure betw

I don't have a citation ready for SF; my recollection from the last anti-airbnb ballot campaign that a leading opponent of airbnb (Campos) claimed a figure between 1999 and 3000 units listed on airbnb. http://www.sfchronicle.com/airbnb-impact-san-francisco-2015/#1 http://www.sfchronicle.com/airbnb-impact-san-francisco-2015/... claims the true figure is closer to 350 units. The higher estimate constitutes less than 0.8% of the 390000 unit supply, comparable to approving just one or two development projects [http://sf.curbed.com/building/1201/trinity-place http://sf.curbed.com/building/1201/trinity-place]. The Chief Economist in SF estimated that a supply increase of 100000 units (at least 33 airbnbs) would be needed to have a significant impact on prices [http://archives.sfexaminer.com/sanfrancisco/leveling-sf-housing-field-could-take-100000-new-units/Content?oid=2703869 http://archives.sfexaminer.com/sanfrancisco/leveling-sf-hous...]. Your [2] claims that 8000 units = 10% of the housing supply in NYC. I find this claim incredible. Your [1] claims that more than 12% of housing units in the LA neighborhood of Venice Beach are airbnbs. Given that the average American gets 16 days of vacation per year [http://theweek.com/articles/463897/americas-war-vacation-by-numbers http://theweek.com/articles/463897/americas-war-vacation-by-...] I suppose we should expect about 5% of bedrooms to be allocated to short-term use. AirBnB's market share is less than 100% of those 5%. On the other hand, LA is relatively popular as a tourist destination so we should expect more airbnbs than Topeka KS. So that claim seems plausible to me. This report goes on to project from a model that these Venice Beach airbnbs, if returned to the long-term rental market, would lower prices by $67/month from $2680, a reduction of 2.5%. The same author notes that in recent years, prices rental prices have increased by 7.3% per year. It appears that the "solution" of banning AirBnB amounts to turning back the clock on the problem by just a few months.