Its unclear how many of those units would turn into long term rentals. In in SF at least, I'm guessing well under half. Many, some, most? of the units are par

Its unclear how many of those units would turn into long term rentals. In in SF at least, I'm guessing well under half. Many, some, most? of the units are part timed occupied by the landlord. The commercial properties (run by businesses) account for about 1/3 of the listings. How many of those units would turn into long term rentals? It can take over a year and cost tens of thousands of dollars to evict a tenant. Throw in rent control and you have a market where it is often more attractive to not rent your vacant unit - particularly if you want to move into the unit or sell it within the decade. All in all, I would estimate that airbnb siphons up around 1% of the units away from long term rentals.