20 Marsh Dr, Mill Valley, CA 94941 Property Records

Marin County property record for 20 Marsh Dr, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,722 sqft · built 1968
Lot Size	0.399 acres (17,400 sqft)
Owner	2 Company Names on File
Last Sale	$1,200,000 (Oct 2004)
Tax Bill	$17,595 (2025)
Deeds & Mortgages	Aug 2021 Transfer
Flood Zone	Zone X (minimal risk)
APN	`027-271-24`

Property Details

APN / Parcel Number

Primary APN	`027-271-24`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	2,722 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1968
Effective Year Built	Effective 1969
Architectural Style	Contemporary
Exterior Material	Wood
Roof Material	Wood Shingle
Lot Area	17,400 sqft (0.399 acres)
Garage Area	568 sqft
Parking Spaces	2 Parking Spaces
Deck Area	853 sqft
Patio Area	853 sqft

Utilities, Heating & Cooling

Heating System	Central
Heating Fuel	Gas
Sewer	Septic
Water Source	Commercial

Location & Zoning

Street Address	20 MARSH DR
City	MILL VALLEY
State	CA
Zip	94941-1022
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Subdivision	BLITHEDALE PARK
Legal Lot Number	18
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	5
Census Block	5002
Census Tract	127000

Owner

Source: Marin County records · APN 027-271-24

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	20 MARSH DR, MILL VALLEY, CA 94941-1022
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	Oct 25, 2004 · Amount on Record
Deed Sale	Oct 25, 2004 · Amount on Record
Prior Sale	May 21, 1998 · Amount on Record
Deed Document Number	200491099
Prior Transfer Date	Oct 22, 2004
Prior Transfer Doc	0000091098
Record Updated	Sep 20, 2026

August 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Aug 16, 2021
Property Address	20 MARSH DR, MILL VALLEY, CA 94941-1022
Document Number	0000051569
Map Reference	VOL 14 PG 2
Instrument Date	Aug 05, 2021
Instrument	2021-0051569
Transaction Type	Transfer
Record Updated	Jun 07, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Family Trust
Address	20 MARSH DR, MILL VALLEY, CA 94941-1022

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
Municipality	Mill Valley City
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 is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2026		$1,376,149 (+2%) Land $850,281 Building $525,868
2025	$17,595.00 (+7.59%) Homeowner's exemption	$1,349,168 (+4.04%) Land $833,610 Building $515,558
2023	$16,354.00 (+3.82%) Homeowner's exemption	$1,296,786 Land $801,245 Building $495,541
2022	$15,752.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 18, 2023 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AO, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 14 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	14 in force
Nearby Flood Claims	11 (1983–2017)
Claims Outside the SFHA	4 of 11
Most Recent Claim	Mar 2017 · river or lake flooding
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Dec 2005 · 3 claims

Wildfire

Wildfire Risk	Moderate above 48% of the US · lower than 71% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Direct burnable vegetation at the parcel

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250

May also be available: Unwired.

Based on FCC filings for 62 locations within half a mile of this property.

Cell Coverage

4G LTE (outdoors only), no 5G reported

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	MARIN MUNICIPAL WATER DISTRICT serves 188,116 people
Water Source	Surface water
Last State Inspection	Aug 2023
Lead	Under 1 ppb (2019–2021) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None last 3 years

Results are for the whole water system as reported to EPA, not water tested at this address; lead at the tap also depends on the building's own pipes. This system sells water to local utilities; the supplier billing this address may be one of them. The full violation and enforcement history is in the system's EPA record.