Case Study: Three Siblings, One Napa Home, and a Prop 19 Decision

The Situation

When Patricia and Douglas retired to Napa in 1974, they paid $87,000 for a four-bedroom home on a quiet street just outside the city limits. They spent decades improving the property, hosted two generations of family gatherings there, and eventually transferred it into a revocable living trust before Douglas passed away in 2019. Patricia continued living there until her own death in early 2024.

Their three adult children, Michael, Karen, and Steven, each inherited a one-third interest in the Napa property through the trust. The relevant numbers at the time of Patricia's death:

• County assessed value: $195,000 (adjusted over 50 years at 2% per year under Prop 13)
• Fair market value at date of transfer: approximately $1,400,000
• Current annual property tax on assessed value (approx. 1.2%): $2,340 per year
• Annual property tax if reassessed to market value: approximately $16,800 per year
• Annual savings from preserving the exclusion: $14,460 per year

Michael, the middle child, had lived in the Napa area his entire life and wanted to keep the family home. Karen lived in Portland and had no interest in keeping California property. Steven had recently relocated to San Diego and was open to either outcome but wanted to be compensated fairly.

The Math

Each sibling's one-third share of the $1,400,000 property was approximately $466,667. Michael needed to buy out Karen and Steven for a combined $933,334 to take full ownership. This was far more than Michael could pay in cash. He had approximately $150,000 in savings and a steady income as an independent contractor in the wine industry.

Michael's estate planning attorney walked him through the Prop 19 analysis. The market value ($1,400,000) minus the assessed value ($195,000) is $1,205,000. This exceeds the $1 million cap by $205,000. Under Prop 19, that $205,000 excess is added to the assessed value: $195,000 + $205,000 = $400,000. Even with the partial reassessment, Michael's annual property tax on a $400,000 assessment would be approximately $4,800, compared to $16,800 on a full reassessment. The savings from claiming the exclusion are still approximately $12,000 per year.

Over 20 years, the projected cumulative tax savings from the Prop 19 exclusion, even with the partial adjustment, total approximately $288,000 in avoided property taxes (accounting for the 2% annual Prop 13 increase on the adjusted value versus full market reassessment).

The Loan Structure

Michael contacted North Coast Financial with the property details and a clear picture of what he needed: a trust loan for approximately $785,000 to fund the sibling buyouts (leaving some cushion after his $150,000 cash contribution). The loan was secured by the Napa property, which was still held in the trust at the time of application.

Loan terms: $785,000 at 10.25%, 1.4 points origination, 12-month term.

• Origination fee: $10,990
• Monthly interest: approximately $6,706
• Anticipated loan term before refinance: 10 months
• Total estimated interest (10 months): $67,060
• Total lender cost: approximately $78,050

The loan funded in 11 business days. Karen and Steven each received their share through escrow. Michael moved into the home within 30 days of closing and immediately began the process of converting his primary residence.

The 20-Year Tax Savings

Michael's adjusted assessed value of $400,000 generates an annual tax bill of approximately $4,800. Without the Prop 19 exclusion, he would pay approximately $16,800 per year on the $1,400,000 market value. The annual savings are approximately $12,000, growing slightly each year as both values adjust at 2% under Prop 13.

Cumulative savings over 20 years, accounting for the 2% annual increases on both sides, total approximately $288,000. Michael spent approximately $78,000 in loan costs and $10,000 in closing and legal costs on the transaction. His net benefit over 20 years, after accounting for all transaction costs, is approximately $200,000 in property tax savings.

He also kept the family home, which carries its own value that cannot be expressed purely in dollars.

Lessons From This Case Study

• The $1 million cap is not a deal-breaker. Many families in high-value markets assume that if the gap exceeds $1 million, the exclusion is not worth pursuing. Michael's case shows that even a partial exclusion can be worth $288,000 over 20 years.
• Speed matters. The 12-month window from date of transfer requires quick action. Michael began the process within three weeks of his mother's passing.
• A cash contribution matters. Michael's $150,000 in savings reduced the loan size meaningfully, which lowered the monthly interest burden and made the overall financing costs more manageable.
• Work with advisors who understand both the tax and the financing picture. Michael's estate planning attorney identified the Prop 19 opportunity. North Coast Financial provided the funding to act on it. Both pieces were needed.

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