438 Wellesley Ave, Mill Valley, CA 94941 Property Records

Marin County property record for 438 Wellesley Ave, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 5 ba · 3,698 sqft · built 1954
Lot Size	0.537 acres (23,400 sqft)
Owner	2 Individual Names on Record
Last Sale	$4,052,000 (Nov 2022)
Tax Bill	$54,803 (2025)
Deeds & Mortgages	Nov 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`050-062-13`

Property Details

APN / Parcel Number

Primary APN	`050-062-13`

Interior

Bedrooms	4 Beds
Full Baths	5 Baths
Building Area	3,698 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1954
Effective Year Built	Effective 2002
Architectural Style	Contemporary
Lot Area	23,400 sqft (0.537 acres)
Garage Area	650 sqft
Parking Spaces	2 Parking Spaces
Deck Area	1,744 sqft
Patio Area	1,744 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	438 WELLESLEY AVE
City	MILL VALLEY
State	CA
Zip	94941-3541
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	MARIN HALF ACRE HOMES 03
Legal Lot Number	10,11
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	1
Census Block	1007
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 Individual Names on Record
Mailing Address	438 WELLESLEY AVE, MILL VALLEY, CA 94941-3541
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Nov 17, 2022 · Amount on Record
Deed Sale	Nov 17, 2022 · Amount on Record
Prior Sale	Oct 11, 2013 · Amount on Record
Deed Document Number	202238004
Prior Transfer Date	Apr 3, 2002
Prior Transfer Doc	0000028486
Record Updated	Oct 29, 2026

November 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Nov 17, 2022
Property Address	438 WELLESLEY AVE, MILL VALLEY, CA 94941-3541
Document Number	0000038004
Map Reference	MB 5 PG 28
Instrument Date	Oct 11, 2022
Instrument	2022-0038004
Transaction Type	Transfer
Record Updated	Dec 2, 2022
Title Company	FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$4,457.20
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Community Property with Right of Survivorship
Address	438 WELLESLEY AVE, MILL VALLEY, CA 94941-3541

Mortgage

Document Number	0000038005
Date	Nov 17, 2022
Instrument	2022-0038005

Lender

Name	CITIBANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Dec 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	4.37%
Type Change Date	Dec 1, 2032
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	9.37%
Index	Other
Max Rate	9.37%

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		$4,294,676 (+2%) Land $2,859,934 Building $1,434,742
2025	$54,803.00 (+4.8%)	$4,210,498 (+4.04%) Land $2,803,878 Building $1,406,620
2023	$52,295.00 (+55.22%)	$4,047,000 Land $2,695,000 Building $1,352,000
2022	$33,691.00

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	None beyond ember reach

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.

Cell Coverage

5G and 4G LTE (outdoors only)

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