331 Lowell Ave, Mill Valley, CA 94941 Property Records

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

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,583 sqft · built 1967
Lot Size	0.124 acres (5,400 sqft)
Owner	Individual Name on Record
Last Sale	$2,050,000 (Sep 2023)
Tax Bill	$29,878 (2025)
Deeds & Mortgages	Sep 2023 Sale & Mortgage Feb 2021 Mortgage
Flood Zone	Zone X (minimal risk)
APN	`050-121-35`

Property Details

APN / Parcel Number

Primary APN	`050-121-35`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Building Area	1,583 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1967
Effective Year Built	Effective 1985
Architectural Style	Contemporary
Lot Area	5,400 sqft (0.124 acres)
Garage Area	400 sqft
Parking Spaces	2 Parking Spaces
Porch	Porch
Deck Area	696 sqft
Patio Area	696 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	331 LOWELL AVE
City	MILL VALLEY
State	CA
Zip	94941-3845
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	BLK 2 LOT 43,44
Legal Subdivision	MARIN HEIGHTS C
Legal Block	2
Legal Lot Number	43,44
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1004
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	Individual Name on Record
Mailing Address	331 LOWELL AVE, MILL VALLEY, CA 94941-3845
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Sep 25, 2023	Grant Deed, Transfer · Conventional Mortgage US BANK NA
Feb 22, 2021	Deed of Trust, Mortgage · Conventional Mortgage QUICKEN LOANS LLC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Sep 25, 2023 · Amount on Record
Deed Sale	Sep 25, 2023 · Amount on Record
Prior Sale	May 2, 2006 · Amount on Record
Deed Document Number	202323525
Prior Transfer Date	Jun 28, 2001
Prior Transfer Doc	0000041665
Record Updated	Oct 29, 2026

September 2023: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Sep 25, 2023
Property Address	331 LOWELL AVE, MILL VALLEY, CA 94941-3845
Document Number	0000023525
Map Reference	VOL 4 PG 104
Instrument Date	Sep 15, 2023
Instrument	2023-0023525
Transaction Type	Transfer
Record Updated	Oct 10, 2023
Title Company	FIRSTAMERICAN TITLE COMPANY, FIRST AMERICAN TITLE COMPANY

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$2,255.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	331 LOWELL AVE, MILL VALLEY, CA 94941-3845

Mortgage

Document Number	0000023526
Date	Sep 25, 2023
Instrument	2023-0023526

Lender

Name	US BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2053

Interest

Rate Type	Adjustable Rate
Rate	6.5%
Type Change Date	Oct 1, 2030
Change Frequency	Annually
Min Rate At Change	2.75%
Max Rate At Change	11.5%
Index	1-Year T-Bill
Max Rate	11.5%

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	331 LOWELL AVE, MILL VALLEY, CA 94941-3845
Transaction Type	Mortgage
Record Updated	Mar 10, 2021
Title Company	AMROCK INC

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	331 LOWELL AVE, MILL VALLEY, CA 94941-3845

Mortgage

Document Number	0000012265
Date	Feb 22, 2021
Instrument	2021-0012265

Lender

Name	QUICKEN LOANS LLC
Type	Mortgage Company
Address	DETROIT, MI 48226

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2051

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		$2,132,820 (+2%) Land $1,352,520 Building $780,300
2025	$29,878.00 (+41.97%)	$2,091,000 (+34.92%) Land $1,326,000 Building $765,000
2023	$21,045.00 (+4.48%) Homeowner's exemption	$1,549,823 Land $919,387 Building $630,436
2022	$20,143.00

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
Flood Insurance Requirement	Not required lenders may require it
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	4 in force
Nearby Flood Claims	4 (1982–1998)
Claims Outside the SFHA	4 of 4
Most Recent Claim	Apr 1998 · Severe Winter Storms And Flooding

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 80% of the US · lower than 88% of California
Wildfire Likelihood	0.01% annual chance
Exposure	Direct burnable vegetation

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 707 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
AT&T Fiber · DSL	5,000 / 5,000
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25

May also be available: T-Mobile, Verizon.

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