This chart covers both subjects. Keep in mind that it makes sense that houses would turn over less often than condos and TICs -- and indeed, this seems to be the case.
Overall, it looks as though about 5.5 percent of existing houses, condos, co-ops and TICs sell each year, including both MLS and non-MLS sales, but not including new-construction condos, whose number of sales can vary widely by year.
Of course, figures are nothing without context. If you want to make sense of all this, give me a call.
Dreaming of San Francisco? Cece Blase offers local advice to San Francisco buyers, sellers and owners-- and feeds the dreams of those who wish they could live in Tony Bennett's 'City by the Bay.' Call 415-577-0809 or email firstname.lastname@example.org. www.ceceblase.com