SF rent control currently allows landlords to raise rent by 5-10% per year (depending on how large the yearly cost-of-living increase is), and can also raise rent somewhat for capital improvements[0]. To offset the above change, maybe we could bump that a little bit... but honestly 10% a year seems like a lot already; if you look at the other side of the equation, most renters are probably not getting a 10% raise each year, and a lot probably aren't even getting 5%. Does a landlord's costs really increase by 5-10% a year? I'd be surprised if so.
We also need a vacancy tax. Landlords should not be allowed to keep units vacant when doing so makes more financial sense than leasing it.
[0] Because I had to look it up myself: https://sftu.org/rent-control/