337 Lowell Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 337 Lowell Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 3,863 sqft · built 1985
Lot Size	0.28 acres (12,200 sqft)
Owner	2 Individual Names on File
Last Sale	$625,000 (Aug 1996)
Tax Bill	$17,504 (2025)
Deeds & Mortgages	Jul 2026 Sale Mar 2021 Reverse Mortgage + 1 more
Flood Zone	Zone X (minimal risk)
APN	`050-121-63`

Property Details

APN / Parcel Number

Primary APN	`050-121-63`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Building Area	3,863 sqft Living Area
Basement Area	222 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1985
Effective Year Built	Effective 1993
Architectural Style	Contemporary
Lot Area	12,200 sqft (0.28 acres)
Garage Area	648 sqft
Parking Spaces	2 Parking Spaces
Deck Area	1,172 sqft
Patio Area	1,172 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	337 LOWELL AVE
City	MILL VALLEY
State	CA
Zip	94941-3845
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	BLK 2 LOT 9-12
Legal Subdivision	MARIN HEIGHTS C
Legal Block	2
Legal Lot Number	9-12
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1004
Census Tract	128100

Owner

337 Lowell Ave is owned and occupied by two individuals who acquired it in July 2026.

Source: Marin County records, as of July 30, 2026

Owner of Record	2 Individual Names on File
Mailing Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Husband and Wife

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Jul 22, 2026	Grant Deed, Transfer NONE LISTED ON DOCUMENT
Mar 24, 2021	Deed of Trust, Mortgage · Reverse Mortgage SYNERGY ONE LENDING
Feb 14, 2019	Deed of Trust, Mortgage · Reverse Mortgage SYNERGY ONE LENDING

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Aug 30, 1996 · Amount on File
Deed Sale	Aug 30, 1996 · Amount on File
Deed Document Number	199646664
Last Transfer Date	Jul 22, 2026
Transfer Doc	0000021226
Record Updated	Sep 20, 2026

July 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jul 22, 2026
Property Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845
Document Number	0000021226
Instrument Date	Jul 22, 2026
Instrument	202621226
Transaction Type	Transfer
Record Updated	Aug 31, 2026
Title Company	NONE LISTED ON DOCUMENT

Transaction

Tax	$0.00
Amount Accuracy	Full Amount Stated

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845
Transaction Type	Mortgage
Record Updated	Jan 17, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845

Mortgage

Document Number	0000019995
Date	Mar 24, 2021
Instrument	2021-0019995

Lender

Name	SYNERGY ONE LENDING
Type	Mortgage Company
Address	SAN DIEGO, CA 92108

Agreement

Type	Reverse Mortgage
Amount	Amount on Record
Term	913 Months
Due	Apr 10, 2097

February 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	337 LOWELL AVE, MILL VALLEY, CA 94941-3845
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	FNC TITLE OF CALIFORNIA

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000004385
Date	Feb 14, 2019
Instrument	2019-0004385

Lender

Name	SYNERGY ONE LENDING
Type	Lending Institution
Address	LAKEWOOD, NJ 08701

Agreement

Type	Reverse Mortgage
Amount	Amount on Record

Tax Assessment & Valuation

The 2025 property tax bill for 337 Lowell Ave was $17,504 with a homeowner's exemption.

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		$1,044,535 (+2%) Land $415,282 Building $629,253
2025	$17,504.00 Homeowner's exemption	$1,024,056 Land $407,140 Building $616,916
2023	$15,793.00 (+9.63%) Homeowner's exemption	$984,295 Land $391,332 Building $592,963
2022	$14,406.00

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

Flood

FEMA maps place 337 Lowell Ave in Zone X, an area of minimal flood risk, though there have been 4 flood claims nearby since 1982.

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

Wildfire risk around 337 Lowell Ave is low, with a 0.02% annual chance of 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	0.02% 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 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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