4 Old Mill St, Mill Valley, CA 94941 Property Records

Marin County property record for 4 Old Mill St, Mill Valley, CA 94941 · Last verified July 2026

Property Summary

Property Type	Single Family Home
Details	3 bd · 2.5 ba · 1,498 sqft · built 2010
Lot Size	0.032 acres (1,393 sqft)
Owner	Company Name on File
Last Sale	$865,000 (Oct 2011)
Tax Bill	$16,551 (2025)
Flood Zone	Zone X (minimal risk)
APN	`028-053-17`

Property Details

APN / Parcel Number

Primary APN	`028-053-17`

Interior

Bedrooms	3 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Building Area	1,498 sqft Living Area
Basement Area	12 sqft

Exterior

Year Built	Built 2010
Effective Year Built	Effective 2010
Architectural Style	Condo/Apartment
Lot Area	1,393 sqft (0.032 acres)
Deck Area	26 sqft
Patio Area	26 sqft

Utilities, Heating & Cooling

Heating System	Central

Location & Zoning

Street Address	4 OLD MILL ST
City	MILL VALLEY
State	CA
Zip	94941-1813
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	TAMALPAIS LAND AND WATER CO
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	2
Census Block	2001
Census Tract	127000

Owner

Source: Marin County records · APN 028-053-17

Assessment roll updated July 13, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on File
Mailing Address	154 HILLSIDE AVE, MILL VALLEY, CA 94941-1156
Owner Type	Company
Vesting	Company

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Oct 28, 2011 · Amount on Record
Deed Sale	Oct 28, 2011 · Amount on Record
Deed Document Number	201155042
Prior Transfer Date	Oct 26, 2011
Prior Transfer Doc	0000055042
Record Updated	Sep 20, 2026

Tax Assessment & Valuation

Source: Marin County records · Assessment roll updated July 13, 2026 · Last verified July 2026

Property Jurisdictions

Type	Name
State	California
County	Marin County
Municipality	Mill Valley City
Elementary School District	Mill Valley Elementary School District (KG - 08)
Secondary School District	Tamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

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

Year	Tax Bill	Assessed Value
2026		$1,174,768 (+2%) Land $534,218 Building $640,550
2025	$16,551.00 (-0.58%)	$1,151,742 (+4.04%) Land $523,747 Building $627,995
2023	$16,647.00 (+9.78%)	$1,107,029 Land $503,414 Building $603,615
2022	$15,164.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Marin County (06041C), updated October 18, 2023 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060411270002, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X
Special Flood Hazard Area	No
Flood Hazard	Minimal
500-Year Floodplain	No
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Nearby Flood Policies	1 in force
Nearby Flood Claims	3 (1982–1983)
Claims Outside the SFHA	3 of 3
Most Recent Claim	Feb 1983, tidal / storm surge, Coastal Storms, Floods, Slides & Tornadoes
Claims By Storm	Coastal Storms, Floods, Slides & Tornadoes, Feb 1983 · 2 claims

Wildfire

Wildfire Risk	Low above 20% of the US · above 11% of California
Wildfire Likelihood	About 1 in 3,846 per year
Exposure	Direct burnable vegetation at the parcel

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.

Internet Providers

Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 351 locations within about half a mile of this property

Provider	Technology	Download / Upload (Mbps)
AT&T	Fiber	5,000 / 5,000
Xfinity	Cable	2,000 / 250

May also be available at this address: Unwired, Verizon, T-Mobile USA, AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.