In the first two parts of our series, we talked about the big picture and the incredible financial benefits of Proposition 19. It’s a powerful tool, but like any important real estate decision, there’s some “fine print” you need to know to ensure a smooth transition.

This post will cover the crucial rules and deadlines you must follow to successfully transfer your property tax base.

Main Rules & Deadlines

There are three key requirements for taking advantage of Prop 19. If you remember these, you’re on the right track!

1. The Two-Year Rule: You must buy or build your new, replacement home within two years of selling your original home. The order doesn’t matter—you can buy first and then sell, or sell first and then buy—as long as both transactions are completed within that 24-month window. This gives you plenty of time to find the right property.
2. The “Same or Greater Value” Clause: This rule can seem a little complicated, but the concept is simple. If the new home you buy is:
   • Less than or equal to the market value of your original home, your tax base transfers with no change.
   • More expensive than the market value of your original home, your tax base will be adjusted. The difference in value between the two homes will be added to your original tax base.
   Let’s use a quick example to clarify the second scenario:
   • Original Home: Taxable Value: $250,000 | Market Value: $1,000,000
   • New Home: Market Value: $1,200,000
   • Calculation: The difference is $200,000 ($1,200,000 – $1,000,000).
   • New Taxable Value: Your old tax base of $250,000 plus the $200,000 difference, for a new taxable value of $450,000. While this is an increase, it is far less than the full market value of $1,200,000 and still results in significant savings.
3. Primary Residence: This rule is straightforward. To qualify for the benefit, both the home you sell and the home you buy must be your principal place of residence.

A Note on Inherited Property

One of the most significant changes under Proposition 19 affects families who want to pass on a home. While the law is fantastic for homeowners 55 and over who are moving, it places new limits on the previous parent-child inheritance exclusion.

The old law (Prop 58) allowed a parent to transfer their home to a child without a property tax reassessment, even if the child didn’t live in the home. Under Prop 19, a child can only keep the parent’s low tax base if they make the home their primary residence within one year of the transfer. If they don’t, the home will be reassessed to its current market value. This is a very important detail for families to be aware of when planning for the future.

Getting Started

You’ll need to work with your county assessor’s office to file the official claim forms to get the benefit. The most important form for seniors is typically called the “Claim for Transfer of Base Year Value to Replacement Primary Residence for Persons at Least Age 55 Years.”

Because the rules and paperwork can be complex, I always recommend working with a local real estate professional or a county assessor who is knowledgeable about Prop 19.

This information is crucial for making a move, and in our next post, we’ll shift from the rules to the action plan. I’ll walk you through the practical steps you can take today to get the ball rolling on your downsizing journey.