331 Marin Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 331 Marin Ave, Mill Valley, CA 94941

Property Summary

Property Type	Duplex
Details	3 bd · 3 ba · 2,121 sqft · built 1963
Lot Size	0.161 acres (7,000 sqft)
Owner	Individual Name on File
Last Sale	$365,000 (Dec 1996)
Tax Bill	$15,045 (2025)
Deeds & Mortgages	Jul 2019 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`049-161-44`

Property Details

APN / Parcel Number

Primary APN	`049-161-44`

Interior

Bedrooms	3 Beds
Full Baths	3 Baths
Total Rooms	7 Rooms
Units	2 Units
Stories	2 Stories
Building Area	2,121 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1963
Effective Year Built	Effective 1968
Architectural Style	Contemporary
Exterior Material	Wood Siding
Roof Material	Tar & Gravel
Lot Area	7,000 sqft (0.161 acres)
Garage Area	437 sqft
Parking Spaces	2 Parking Spaces
Deck Area	365 sqft
Patio Area	365 sqft

Utilities, Heating & Cooling

Heating System	Central
Heating Fuel	Gas
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	331 MARIN AVE
City	MILL VALLEY
State	CA
Zip	94941-4047
Property Category	Residential
Property Type	Residential > Multi-Unit > Duplex
Local Zoning Code	R1
Legal Description	BLK A LOT 20
Legal Subdivision	TAMALPAIS VLY MARIN CO
Legal Block	A
Legal Lot Number	20
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3008
Census Tract	128100

Owner

Source: Marin County records · APN 049-161-44

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	Individual Name on File
Mailing Address	43 PALM AVE, SAN RAFAEL, CA 94901-2221
Owner Type	Individual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Dec 09, 1996 · Amount on Record
Deed Sale	Dec 09, 1996 · Amount on Record
Prior Sale	Dec 02, 1994 · Amount on Record
Deed Document Number	199665113
Last Transfer Date	Jul 17, 2014
Transfer Doc	0000030089
Record Updated	Sep 20, 2026

July 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	331 MARIN AVE, MILL VALLEY, CA 94941-4047
Transaction Type	Mortgage
Record Updated	Feb 05, 2021

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000024830
Date	Jul 16, 2019
Instrument	2019-0024830

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Aug 01, 2049

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 is set for property tax purposes and is not a market price estimate.

Year	Tax Bill	Assessed Value
2026		$589,700 (+2%) Land $249,169 Building $340,531
2025	$15,045.00 (+7.51%)	$578,138 (+4.04%) Land $244,284 Building $333,854
2023	$13,994.00 (+1.91%)	$555,691 Land $234,799 Building $320,892
2022	$13,732.00

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 AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Flood Insurance Cost	Premium on Record median of 88 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	88 in force
Nearby Flood Claims	120 (1978–2026)
Claims Outside the SFHA	13 of 120
Most Recent Claim	Jan 2026 · other causes
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 5 claims Coastal Storms, Floods, Slides & Tornadoes, Feb 1983 · 6 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 29 claims

Wildfire

Wildfire Risk	Low lower than 64% of the US · lower than 79% of California
Wildfire Likelihood	0.05% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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)
Xfinity Cable	2,000 / 250
T-Mobile USA Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Unwired, Verizon.

Based on FCC filings for 436 locations within half a mile of this property.

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.