Working in Oakland I have not noticed an increase in RV parking during this housing crisis.
This article details how East Palo Alto is dealing with parked RVs.
Officials in Palo Alto, Mountain View, Menlo Park and other cities have taken steps in recent months to relocate RVs from thoroughfares and residential streets. East Palo Alto estimates about 60 vehicles are used as permanent shelter in the city, with most of them parked along streets near the bay.
Civil Code 1927 