> Is your primary goal here to extract more revenue from timeshare owners and people who own a pied-à-terre?

I'm discussing ways to achieve the goal upthread of insulating people from property tax uncertainty on their primary residence.

I would expect that the larger purpose of that is to allow full-value taxation on all other real property; of which non-primary-residence residential property is a subset (and a fairly small subset, at that.)

Remember that Prop 13 applies to all real property, not just residential property.