303 Ross Dr, Mill Valley, CA 94941 Property Records

Marin County property record for 303 Ross Dr, Mill Valley, CA 94941

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,287 sqft · built 1950
Lot Size	0.172 acres (7,500 sqft)
Owner	2 Company Names on File
Last Sale	$950,000 (May 2010)
Tax Bill	$19,806 (2025)
Deeds & Mortgages	Mar 2021 Mortgage
Flood Zone	Zone AH (high risk)
APN	`052-014-02`

Property Details

APN / Parcel Number

Primary APN	`052-014-02`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	7 Rooms
Stories	2 Stories
Building Area	2,287 sqft Living Area
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1950
Effective Year Built	Effective 1990
Architectural Style	Contemporary
Exterior Material	Wood Siding
Construction Type	Frame
Roof Material	Tar & Gravel
Lot Area	7,500 sqft (0.172 acres)
Garage Area	288 sqft
Parking Spaces	1 Parking Space
Deck Area	300 sqft
Patio Area	300 sqft

Utilities, Heating & Cooling

Heating System	Central
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	303 ROSS DR
City	MILL VALLEY
State	CA
Zip	94941-3848
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Subdivision	KAY PARK 01
Legal Lot Number	29
Jurisdiction	MARIN CA
Township / Civil Division	SOUTHEAST MARIN
Census Block Group	3
Census Block	3005
Census Tract	128100

Owner

303 Ross Dr is owned by a company that acquired it in March 2012 and is owner-occupied.

Source: Marin County records, as of August 27, 2026

Owner of Record	2 Company Names on File
Mailing Address	303 ROSS DR, MILL VALLEY, CA 94941-3848
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Borrower in Default

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	May 5, 2010 · Amount on File
Deed Sale	May 5, 2010 · Amount on File
Prior Sale	May 24, 2005 · Amount on File
Deed Document Number	201022172
Last Transfer Date	Mar 30, 2012
Transfer Doc	0000046738
Record Updated	Oct 29, 2026

March 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	MARIN CA
Property Address	303 ROSS DR, MILL VALLEY, CA 94941-3848
Transaction Type	Mortgage
Record Updated	Mar 26, 2021
Title Company	SOLIDIFI TITLE AND CLOSING, SOLIDIFI TITLE & CLOSING

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	303 ROSS DR, MILL VALLEY, CA 94941-3848

Mortgage

Document Number	0000016285
Date	Mar 9, 2021
Instrument	2021-0016285

Lender

Name	UNITED WHOLESALE MORTGAGE
Type	Mortgage Company
Address	PONTIAC, MI 48341

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Apr 1, 2036

Tax Assessment & Valuation

The 2025 property tax bill for 303 Ross Dr was $19,806 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		$1,246,763 (+2%) Land $789,924 Building $456,839
2025	$19,806.00 Homeowner's exemption	$1,222,321 Land $774,438 Building $447,883
2023	$18,842.00 (+4.64%) Homeowner's exemption	$1,174,867 Land $744,372 Building $430,495
2022	$18,007.00

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

Flood

FEMA maps place 303 Ross Dr in Zone AH, a high-risk flood area; flood insurance is required for federally backed loans.

Source: FEMA National Flood Hazard Layer, effective October 18, 2023 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone AH high risk · shallow ponding 1–3 ft
100-Year Floodplain	Yes 1% annual chance
Floodway	No
Base Flood Elevation	11.0 ft
Flood Insurance Requirement	Required federally backed loans
Flood Insurance Cost	Premium on File median of 88 policies
Community Rating System	Class 6 (20% premium discount)
Nearby Flood Policies	88 in force
Nearby Flood Claims	120 (1978–2026)
Claims Outside the SFHA	13 of 120
Most Recent Claim	Jan 2026 · other causes
Claims by Event	Severe Storms, Flooding, Mudslides, And Landslides, Jan 2006 · 5 claims Coastal Storms, Floods, Slides & Tornadoes, Feb 1983 · 6 claims Severe Storms, Flood, Mudslides & High Tide, Jan 1982 · 29 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 303 Ross Dr 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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