You may need to check with some of the locals but CA has more people living full time in their RV's on city streets "legally" than I have ever seen anywhere in the US.  They are mostly really crappy looking Class C's and most of the folks living in them look like surfer dudes and gals but I am sure there are a great variety.  They are parked along the streets in many downtown and residential areas and are not bothered by the police where this type of parking is allowed.
I am sure it can be done but the most difficult park might be trying to find regular weekend parking at a nearby RV park and even if you can, it will be quite pricy.