528 Alta Way, Mill Valley, CA 94941 Property Records

Marin County property record for 528 Alta Way, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 1,968 sqft · built 2000
Lot Size	0.152 acres (6,600 sqft)
Owner	2 Individual Names on Record
Last Sale	$2,550,000 (Feb 2022)
Tax Bill	$36,637 (2025)
Deeds & Mortgages	Feb 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`049-014-33`

Property Details

APN / Parcel Number

Primary APN	`049-014-33`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	1,968 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 2000
Effective Year Built	Effective 2001
Lot Area	6,600 sqft (0.152 acres)
Garage Area	527 sqft
Parking Spaces	2 Parking Spaces
Deck Area	698 sqft
Patio Area	698 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	528 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	10,11
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	2
Census Block	2000
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	528 ALTA WAY, MILL VALLEY, CA 94941-3900
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	Feb 25, 2022 · Amount on Record
Deed Sale	Feb 25, 2022 · Amount on Record
Prior Sale	Jun 15, 2006 · Amount on Record
Deed Document Number	20227470
Record Updated	Sep 20, 2026

February 2022: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	MARIN CA
Recording Date	Feb 25, 2022
Property Address	528 ALTA WAY, MILL VALLEY, CA 94941-3900
Document Number	0000007470
Map Reference	VOL 5 PG 2
Instrument Date	Feb 17, 2022
Instrument	2022-0007470
Transaction Type	Transfer
Record Updated	Jul 21, 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	$2,805.00
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	528 ALTA WAY, MILL VALLEY, CA 94941-3900

Mortgage

Document Number	0000007471
Date	Feb 25, 2022
Instrument	2022-0007471

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

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

Interest

Rate Type	Adjustable Rate
Rate	2.75%
Type Change Date	Mar 1, 2029
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	7.75%
Index	Other
Max Rate	7.75%

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		$2,755,841 (+2%) Land $1,461,267 Building $1,294,574
2025	$36,637.00 (+6.22%) Homeowner's exemption	$2,701,815 (+4.04%) Land $1,432,620 Building $1,269,195
2023	$34,490.00 (+41.09%) Homeowner's exemption	$2,596,920 Land $1,377,000 Building $1,219,920
2022	$24,445.00

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	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

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

Wildfire Risk	Low lower than 65% of the US · lower than 79% of California
Wildfire Likelihood	0.04% 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

5G and 4G LTE (outdoors only)

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