El Cerrito is in Contra Costa County. It has its own landlord-tenant program on top of state law. Sproutly does not state the cap, who is covered, or what notices apply. You decide, from the official sources below.
The list of places is not complete. A city that is not listed may still have rules.
The calculator turns a percent into a new rent, or a new rent into a percent. It does not say what the limit is. The rent increase notice has you enter each legal value yourself, with a link to where to check it.