01
Review the assessment
Understand the property's current taxable value and assessment history.
NORTHERN CALIFORNIA VINEYARD OWNERS
Your vineyard may be worth less.
Your property taxes should reflect that.
Vineyard market conditions have changed. If your property's January 1 market value was below its taxable assessed value, you may qualify for a temporary reduction under California Proposition 8.
2026 regular assessment appeal filing period: November 30 deadline in participating counties. Verify the applicable county's rules and deadlines.
SONOMA · NAPA · MENDOCINO · LAKE
Focused on vineyard and agricultural propertyAssessment-focused reviewNorthern California service area
THE OPPORTUNITY
Declining vineyard values can create assessment review opportunities.
A market decline does not automatically mean a tax reduction. The key question is whether a property's value as of the applicable January 1 lien date was lower than its taxable assessed value.
02
Evaluate market evidence
Consider comparable vineyard sales, property characteristics, and other relevant valuation information.
03
Explore next steps
Discuss whether a county review or formal assessment appeal may be appropriate.
OUR APPROACH
Clear guidance. Property-specific analysis.
Vineyard assessments can involve land, planted vines, agricultural improvements, and other property features. We begin by understanding the property and the assessment before discussing potential relief.
Start with a preliminary review →1 Tell us about your vineyard and its location.
2 We discuss assessment information and available market evidence.
3 We explain possible next steps and any engagement terms.
FREQUENTLY ASKED QUESTIONS
Questions vineyard owners ask
Does a decline in vineyard prices guarantee lower taxes?
No. Relief generally depends on whether the property's January 1 market value is below its taxable assessed value. Some longtime owners have low Proposition 13 assessed values and may not qualify.
What is Proposition 8?
California Proposition 8 provides for temporary reductions when the market value of real property falls below its adjusted base-year value. The assessment can later increase as market value recovers, subject to applicable rules.
What is the deadline?
For the 2026 regular assessment appeal period, November 30 is the published deadline in Sonoma and Napa counties. Deadlines and eligibility can vary by county and type of assessment. Confirm directly with your county assessment appeals office.
Is a reduction guaranteed?
No. A review does not guarantee a reduction, and an appeal may result in a reduced, unchanged, or increased assessment. Property taxes remain payable according to the normal deadlines.
GET STARTED
Request a preliminary vineyard assessment review.
Tell us a little about your property. We'll contact you to discuss whether further assessment research makes sense.
Prefer to talk? 707-953-0628
Please do not submit tax returns, financial statements, or other sensitive documents through this initial inquiry form.