Concerning RentBerry, it's the first I've heard of it and I know nothing about California bylaws, but isn't it illegal to just put the price of rent up in an unrestricted auction?
Ok I looked it up for SF: https://www.sftu.org/rentcontrol/
Indeed, there is a control of only a few percent per year. So how is RentBerry legal?
"If the owner re-rents before the 5-year period is up, the residential property must be offered at the same rent that the former tenant was paying (plus annual allowable increases.)" https://www.sftu.org/are-you-paying-too-much-rent/