Proposition 60 allows qualifying “senior” citizens to transfer their property tax base from their current principal residence to a replacement property within the same county(intra-county) in CA if certain requirements are met.
Proposition 90 provides for those qualifying for Proposition 60 to transfer their property tax base to a replacement principal residence in another county(inter-county) in CA, under specific county ordinances. Counties that have ordinances enabling Proposition 90:
Elgibility
It is generally safer to sell your principal residence first, under either of these two propositions, so you are better prepared to meet the requirements and your options may be clearer.
Filing
Claim form BOE-60-AH (Claim of Person/s at Least 55 Years of Age for Transfer of Base Year Value to Replacement Dwelling) is available from several sources and can be downloaded from most CA County's Assessor's webites
Information from multiple sources neither guaranteed nor meant to be comprehensive
Please verify Proposition 60/90 eligibility with the appropriate county’s assessor’s office
For more information please visit the California State Board of Equalization