321 Marin Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 321 Marin Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 2,146 sqft · built 1962
Lot Size	0.287 acres (12,500 sqft)
Owner	2 Company Names on Record
Last Sale	$850,000 (May 2005)
Tax Bill	$23,554 (2025)
Deeds & Mortgages	Oct 2023 Line of Credit Aug 2017 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`049-171-23`

Property Details

APN / Parcel Number

Primary APN	`049-171-23`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Building Area	2,146 sqft Living Area
Basement Area	360 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1962
Effective Year Built	Effective 2004
Architectural Style	Contemporary
Lot Area	12,500 sqft (0.287 acres)
Garage Area	192 sqft
Deck Area	1,410 sqft
Patio Area	1,410 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	321 MARIN AVE
City	MILL VALLEY
State	CA
Zip	94941-4047
Property Category	Residential
Property Type	Residential > Single Family > Home
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3008
Census Tract	128100

Owner

Source: Marin County records, as of July 13, 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 Record
Mailing Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Oct 13, 2023	Deed of Trust, Mortgage · Line of Credit SAN FRANCISCO FIRE CU
Aug 2, 2017	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA
Oct 7, 2019	Quit Claim Deed, Transfer OLD REPUBLIC TITLE
Oct 4, 2019	Intrafamily Transfer, Transfer · Conventional Mortgage PRIMARY RESIDENTIAL MORTGAGE INC

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 4, 2005 · Amount on Record
Deed Sale	May 4, 2005 · Amount on Record
Deed Document Number	200532604
Last Transfer Date	Sep 27, 2019
Transfer Doc	0000037161
Record Updated	Sep 20, 2026

October 2023: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047
Transaction Type	Mortgage
Record Updated	Oct 25, 2023
Title Company	CHICAGO TITLE PIRT

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047

Mortgage

Document Number	0000026731
Date	Oct 13, 2023
Instrument	2023-0026731

Lender

Name	SAN FRANCISCO FIRE CU
Type	Credit Union
Address	SAN FRANCISCO, CA 94118

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	300 Months
Due	Oct 8, 2048

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

August 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	AMERICAN TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000030885
Date	Aug 2, 2017
Instrument	2017-0030885

Lender

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

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Aug 20, 2047

October 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	MARIN CA
Recording Date	Oct 7, 2019
Property Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047
Document Number	0000037161
Instrument Date	Sep 27, 2019
Instrument	37161
Transaction Type	Transfer
Record Updated	Oct 18, 2019
Title Company	OLD REPUBLIC TITLE

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Personal Trust
Address	321 MARIN AVE MILL VALLEY CA 949414047, MILL VALLEY, CA 94941-4047

October 2019: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	MARIN CA
Recording Date	Oct 4, 2019
Property Address	321 MARIN AVE, MILL VALLEY, CA 94941-4047
Document Number	0000036964
Instrument Date	Sep 27, 2019
Instrument	2019-0036964
Transaction Type	Transfer
Record Updated	Aug 13, 2021
Title Company	OLD REPUBLIC TITLE COMPANY

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	Joint Tenants
Address	321 MANN AVENUE, MILL VALLEY, CA 94941

Mortgage

Document Number	0000036965
Date	Oct 4, 2019
Instrument	2019-0036965

Lender

Name	PRIMARY RESIDENTIAL MORTGAGE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	180 Months
Due	Oct 1, 2034

Tax Assessment & Valuation

Source: Marin County assessment roll, as of July 13, 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

Year	Tax Bill	Assessed Value
2026		$1,610,427 (+2%) Land $1,023,588 Building $586,839
2025	$23,554.00 (+4.41%) Homeowner's exemption	$1,578,856 (+4.04%) Land $1,003,521 Building $575,335
2023	$22,559.00 (+0.75%) Homeowner's exemption	$1,517,561 Land $964,562 Building $552,999
2022	$22,390.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

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

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.

Wildfire

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

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 cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.

Drinking Water

Source: EPA Safe Drinking Water Information System, as of September 2026

Water System	MARIN MUNICIPAL WATER DISTRICT serves 188,116 people · EPA ID CA2110002
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, 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.

Internet Providers

Source: FCC Broadband Data Collection, based on 436 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
T-Mobile Fixed Wireless	100 / 20
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Unwired, Verizon.

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