@Linda231 they are supposed to refund your Business License fee if you only use it for STR.
I don't know the answer to your question about the expiry of the business license vs the STR license.
I heard I can get a refund on my $91 Business Registration if it’s used exclusively for short-term rentals. Is this true?
Yes. According to the City, if a host’s only registered business is for hosting (e.g. they aren’t also a Lyft/Uber driver, a hairdresser, or other small business owner) and the unit is in a building of 4 units or less, they will get a refund. This will be granted automatically if you meet the criteria, so you don’t have to request it.
https://www.airbnb.com/help/article/1849/san-francisco-s-registration-process--frequently-asked-ques...