518 Alta Way, Mill Valley, CA 94941 Property Records

Marin County property record for 518 Alta Way, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 2,030 sqft · built 2000
Lot Size	0.149 acres (6,500 sqft)
Owner	2 Trust Names on File
Last Sale	$2,305,000 (Feb 2025)
Tax Bill	$26,833 (2025)
Deeds & Mortgages	Apr 2022 Line of Credit Jun 2021 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`049-014-30`

Property Details

APN / Parcel Number

Primary APN	`049-014-30`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	2,030 sqft Living Area
Basement Area	990 sqft

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2001
Lot Area	6,500 sqft (0.149 acres)
Garage Area	480 sqft
Parking Spaces	2 Parking Spaces
Deck Area	376 sqft

Location & Zoning

Street Address	518 ALTA WAY
City	MILL VALLEY
State	CA
Zip	94941-3900
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	TAMALPAIS VLY 04
Legal Block	1
Legal Lot Number	20,21
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	2
Census Block	2000
Census Tract	128100

Owner

518 Alta Way is owner-occupied and held in a trust since February 2025.

Source: Marin County records, as of July 13, 2026

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

Owner of Record	2 Trust Names on File
Mailing Address	518 ALTA WAY, MILL VALLEY, CA 94941-3900
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Revocable Trust

Deeds, Mortgages & Sale History

Date	Document
Apr 29, 2022	Deed of Trust, Mortgage · Line of Credit STAR ONE CU
Jun 28, 2021	Grant Deed, Transfer · Conventional Mortgage WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 25, 2025 · Amount on File
Deed Sale	Feb 25, 2025 · Amount on File
Prior Sale	Jun 28, 2021 · Amount on File
Deed Document Number	20254346
Prior Transfer Date	Aug 16, 2012
Prior Transfer Doc	0000051842
Record Updated	Oct 29, 2026

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	518 ALTA WAY, MILL VALLEY, CA 94941-3900
Transaction Type	Mortgage
Record Updated	Jul 21, 2022
Title Company	FIDELITY NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	518 ALTA WAY, MILL VALLEY, CA 94941-3900

Mortgage

Document Number	0000017928
Date	Apr 29, 2022
Instrument	2022-0017928

Lender

Name	STAR ONE CU
Type	Credit Union
Address	SUNNYVALE, CA 94088

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	303 Months
Due	Jul 5, 2047

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

June 2021: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Jun 28, 2021
Property Address	518 ALTA WAY, MILL VALLEY, CA 94941-3900
Document Number	0000042400
Map Reference	VOL 5 PG 2
Instrument Date	Jun 21, 2021
Instrument	2021-0042400
Transaction Type	Transfer
Record Updated	Jul 21, 2022
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$1,892.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	518 ALTA WAY, MILL VALLEY, CA 94941-3900

Mortgage

Document Number	0000042401
Date	Jun 28, 2021
Instrument	2021-0042401

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2051

Tax Assessment & Valuation

The 2025 property tax bill for 518 Alta Way was $26,833 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		$2,351,100 (+26.28%) Land $1,428,000 Building $923,100
2025	$26,833.00 Homeowner's exemption	$1,861,761 Land $1,109,480 Building $752,281
2023	$26,300.00 (+3.91%) Homeowner's exemption	$1,789,488 Land $1,066,410 Building $723,078
2022	$25,310.00

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

Flood

FEMA maps place 518 Alta Way in Zone X, an area of minimal flood risk, though there have been 6 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	6 in force
Nearby Flood Claims	6 (1982–2019)
Claims Outside the SFHA	3 of 6
Most Recent Claim	Feb 2019 · Severe Winter Storms, Flooding, Landslides, And Mudslides
Claims by Event	Coastal Storms, Floods, Slides & Tornadoes, Mar 1983 · 3 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

Wildfire risk around 518 Alta Way is low, with a 0.01% 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	0.01% 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 589 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
AT&T DSL · Fiber in parts of the area	100 / 20

May also be available: Verizon.

Cell Coverage

4G LTE (outdoors only), no 5G reported

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