TaxDrop currently serves Texas only. We're not taking Marin County appeals yet. Join the waitlist and we'll let you know when we launch in California.
β Free county guide - how a Marin County appeal works
β Join the waitlist - no payment and no filing. We'll just tell you when TaxDrop opens here.
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TaxDrop currently serves Texas only. We're not taking Marin County appeals yet. Join the waitlist and we'll let you know when we launch in California.
β Free county guide - how a Marin County appeal works
β Join the waitlist - no payment and no filing. We'll just tell you when TaxDrop opens here.
TaxDrop currently serves Texas only. Join the waitlist and we'll email you when we launch here.
TaxDrop currently serves property owners in Texas only. We aren't filing appeals or selling filing packets in California right now. If you'd like to hear when we launch in Marin County, join the waitlist. Joining doesn't sign you up for a service or file anything for you.
In the meantime, here's general information about how a property tax appeal works in Marin County. Check the county's official site for current deadlines and fees.
The Marin County Assessor's Office processes over 130,000 properties annually using automated valuation models and limited comparable sales data. In rapidly changing markets like San Rafael and Novato, these systems frequently miss crucial details about your specific property. Maybe your home backs up to Highway 101, has foundation issues, or lacks the upgrades of similar homes that sold recently. The assessor doesn't know these details β but they directly impact your home's true market value.
Under California's Proposition 8, if your property's current market value is less than its assessed value, you're legally entitled to pay taxes on the lower amount. Most homeowners never check this, assuming the county got it right. That assumption costs Marin County homeowners millions in overpaid taxes every year.
TaxDrop currently operates in Texas. See our Texas property tax guide.
Step 1: Review Your Assessment
Receive Assessed Value Notice by July 1 showing property valuation.
Step 2: File Your Appeal
Submit Assessment Appeal Application with supporting evidence between July 2 β September 15.
Step 3: Application Review
Clerk reviews application and schedules hearing (60-90 days after filing).
Step 4: Hearing Preparation
Gather comparable sales data, appraisals, and documentation.
Step 5: Appeals Board Hearing
Present case to Board panel (typically 4-9 months after filing).
Step 6: Decision & Adjustment
Board issues written decision; if successful, assessed value reduced and tax refund issued (30-60 days after hearing).
Filing Deadlines:
Required Documents:
Where to Submit:
Marin County Assessment Appeals Board, 3501 Civic Center Dr, San Rafael, CA 94903
Official resources:
The deadline to file a property tax appeal in Marin County is September 15th or within 60 days of your assessment notice mailing date, whichever is later. Missing this deadline means waiting until next year to challenge your assessment. Property owners in San Rafael, Novato, and Mill Valley should mark their calendars early to protect their appeal rights.
Not yet. TaxDrop currently serves Texas only. Join the waitlist on this page and we'll let you know when we launch in California.
You can check your property's assessed value online through the Marin County Assessor-Recorder's website using their property search tool. The tool shows your assessed value, taxable value, past assessments, and any exemptions applied. This information helps determine if your San Rafael, Novato, or Mill Valley property is overassessed compared to recent sales.
Your property may be overassessed if similar homes in your San Rafael, Mill Valley, or Novato neighborhood sold for 10% or more below your assessed value within the past year. Market downturns, property damage, or outdated comparable sales often cause overassessments. Professional appraisals can confirm if your assessment exceeds fair market value.
Yes, landlords and investors can appeal property taxes on rental and commercial properties throughout Marin County, including San Rafael, Novato, and Mill Valley. Investment property appeals often save more money than residential appeals due to higher assessed values. Reduced property taxes directly improve cash flow and investment returns.
The Marin County property tax appeal process typically takes 4-8 months from filing to final decision by the Assessment Appeals Board. Simple cases may resolve faster through informal review, while complex cases requiring hearings take longer. Most decisions are issued by March of the following year.
Missing the Marin County property tax appeal deadline means you cannot appeal your current assessment and must wait until next year's filing period. You'll continue paying taxes based on the potentially incorrect assessment for the full tax year. However, you can prepare early by gathering evidence and documentation for next year's appeal.