20 Shell Rd, Mill Valley, CA 94941 Property Records

Marin County property record for 20 Shell Rd, Mill Valley, CA 94941 · Last verified July 2026

Property Highlights

Property Type	Residential > Single Family > Home
Bedrooms	3 Beds
Bathrooms	1 Baths
Year Built	Built 1937
Square Footage	1,735 sqft Living Area
Lot Size	19,000 sqft (0.436 acres)
Garage	200 sqft
Last Sale	$2,505,000 (2025)
Tax Bill	$5,512.00 (2025)

Property Details

APN / Parcel Number

Primary APN	`033-071-16`

Interior

Bedrooms	3 Beds
Full Baths	1 Baths
Building Area	1,735 sqft Living Area
Fireplace	Fireplace
Fireplaces	1 Fireplaces

Exterior

Year Built	Built 1937
Effective Year Built	Effective 1937
Architectural Style	Contemporary Style
Lot Area	19,000 sqft (0.436 acres)
Parking Spaces	1 Parking Spaces
Garage Area	200 sqft Garage

Utilities and HVAC

Heating System	Floor/Wall Furnace Heating

Location & Zoning

Street Address	20 SHELL RD
City	MILL VALLEY
State	CA
Zip	94941-1508
Property Usage	Residential Property Usage
Type	Residential > Single Family > Home
Legal Description	OFFICIAL RECS 5 PG 12 BLK A LOT 43,45 & OTHER LOTS
Legal Subdivision	ALTO 01
Legal Lot Number	43
Jurisdiction	MARIN CA
Minor Civil Division	SOUTHEAST MARIN
Census Blockgroup	1
Census Block	1002
Census Tract	126200

Owner

Source: Marin County records · APN 033-071-16

Assessment roll updated July 13, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	2 Company Names on File
Mailing Address	19 SHELL RD, MILL VALLEY, CA 94941-1507
Owner Type	Owner is a Company
Vesting	Owner is a Trust, Family Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Oct 07, 2025 · Amount on Record
Deed Sale	Oct 07, 2025 · Amount on Record
Deed Doc Number	202525684
Prior Transfer Date	Jul 21, 2003
Prior Transfer Doc	0000133389
Record Refreshed	Sep 20, 2026

October 2025: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Oct 07, 2025
Property Address	20 SHELL RD, MILL VALLEY, CA 94941-1508
Document Number	0000025684
Map Reference	MB 5 PG 12
Instrument Date	Oct 03, 2025
Instrument	2025-0025684
Transaction Type	Transfer
Record Updated	Oct 22, 2025
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATL TITLE COMPANY

Transaction

Amount	Amount Recorded
Tax	$2,755.50
Amount Accuracy	Rounded Values by County
Additional	Arms Length Transaction

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	19 SHELL RD, MILL VALLEY, CA 94941-1507

Tax Assessment & Valuation

Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
County	Marin County
Elementary School District	Mill Valley Elementary School District (KG - 08)
Secondary School District	Tamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Year	Tax Bill	Assessed Value
2026		$2,505,000 (+1,995.92%) Land $1,500,000 Building $1,005,000
2025	$5,512.00 (+5.53%) Homeowner's exemption	$119,518 (+4.04%) Land $39,226 Building $80,292
2023	$5,223.00 (+2.55%) Homeowner's exemption	$114,877 Land $37,703 Building $77,174
2022	$5,093.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Flood Hazard	Minimal
500-Year Floodplain	No
Special Flood Hazard Area	No

Wildfire

Wildfire Risk	Not rated no burnable land in reach
Wildfire Likelihood	Negligible
Exposure	None beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.