Cornwall St, Mill Valley, CA Property Records

Marin County property records for 4 addresses on Cornwall St, Mill Valley, CA · Last verified August 2026

Cornwall St Highlights

Properties 4
Latest Sale $4,800,000 (Mar 2021)
Deeds and Mortgages on File 18
Average Living Area 3,446 sq ft
Owner Occupied 100%
Median Annual Tax Bill $60,563
Median Year Built 2007
Average Ownership Tenure 14 years

Properties on Cornwall St

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

1 Cornwall St

5 bd · 4 ba · 4,052 sqft · 0.296 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$4,800,000Mar 2021 $63,7512025 Amount on Record May 2017 2 Names on Record Owner Occupied Assessor + 6 DocumentsUpdated Jul 2026

10 Cornwall St

2 bd · 1 ba · 750 sqft · 0.069 acres

Last Sale Tax Bill Prior Sale Owner Records
$6,2952025 —Aug 2004 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

20 Cornwall St

3 bd · 4 ba · 3,204 sqft · 0.314 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$21,7622025 2 Names on Record Owner Occupied Assessor + 5 DocumentsUpdated Aug 2026

25 Cornwall St

5 bd · 5.5 ba · 5,778 sqft · 0.947 acres · Garage · Pool

Last Sale Tax Bill Prior Sale Owner Records
$2,770,000Sep 2003 $60,5632025 —Dec 2021 2 Names on Record Owner Occupied Assessor + 7 DocumentsUpdated Aug 2026

Wildfire Risk on Cornwall St

Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020

Wildfire RiskModerate
this street's cells rank at the 40th percentile of exposed land nationally · 24th in California
Wildfire LikelihoodModerate — about 1 in 1,493 per year
ExposureIndirect
0 of 1 cells directly exposed · 1 adjoin burnable vegetation

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