5 Prop 19 Planning Strategies California Families Are Using in 2025

When Proposition 19 took effect in February 2021, it caught many California families flat-footed. Four years later, estate planning attorneys have developed clearer strategies to work within the new rules. None of these approaches eliminates the Prop 19 problem entirely — but each can reduce its impact for the right family in the right situation.

1. The Move-In Strategy: Qualify for the Primary Residence Exclusion

The most straightforward approach is the one Prop 19 explicitly preserved: if a child inherits a parent's primary residence and moves in as their own primary residence within one year, they qualify for the limited exclusion. For families where a child genuinely wants to live in the inherited home, this approach works well — and if the home's market value doesn't exceed the parent's assessed value by more than $1 million, there is no reassessment at all.

The critical planning step is making sure the home qualifies as the parent's primary residence at the time of transfer, and ensuring the child understands the one-year deadline and the filing requirements with the county assessor.

2. Lifetime Transfers with Careful Timing

A transfer to a child during the parent's lifetime — as a gift — is also subject to Prop 19 reassessment if it's the parent's primary residence and the child doesn't occupy it. However, lifetime transfers of non-primary-residence property may be structured in some cases to preserve lower assessed values, depending on the specific circumstances and how long ago the property was acquired.

The tradeoff here is significant: a lifetime gift forfeits the stepped-up basis at death, potentially exposing the heir to large capital gains taxes on eventual sale. This calculation requires running the numbers with a CPA — comparing the annual property tax savings against the eventual capital gains cost.

3. Tenancy-in-Common Planning

Some families have explored transferring partial interests in property — giving a child a fractional interest while the parent retains the rest — with the child later inheriting the remainder. The tax treatment of these transfers is complex and the IRS and county assessors scrutinize them closely. Any approach involving partial transfers requires careful legal structuring and professional guidance.

4. Trust Design for Multi-Property Families

For families with multiple properties, the trust can be designed to give different beneficiaries specific properties — directing the primary residence to the child most likely to occupy it, and other properties to other heirs who may be better positioned to accept the reassessment or hold the property as investment real estate. Thoughtful distribution planning within the trust can minimize the overall reassessment impact across a portfolio.

5. Accept the Reassessment — and Plan Around It

For some families, the most practical approach is to accept that Prop 19 will trigger reassessment and focus on other planning instead — maximizing the stepped-up basis at death to eliminate capital gains, structuring the estate to avoid probate, and ensuring the overall estate plan is efficient. In cases where the rental income from an inherited investment property exceeds the increased property tax, the reassessment may be acceptable as a business matter.