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318 Ross Dr, Mill Valley, CA 94941 Property Records

Marin County property record for 318 Ross Dr, Mill Valley, CA 94941

Property Summary

Property TypeSingle Family Home
Details3 bd · 1 ba · 1,767 sqft · built 1950
Lot Size0.172 acres (7,500 sqft)
Owner2 Company Names on Record
Tax Bill$11,036 (2025)
Deeds & MortgagesAug 2021 Transfer
Flood ZoneZone AE (high risk)
APN052-012-04

Property Details

APN / Parcel Number

Primary APN052-012-04

Interior

Bedrooms3 Beds
Full Baths1 Bath
Building Area1,767 sqft Living Area
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1950
Effective Year BuiltEffective 1958
Architectural StyleContemporary
Lot Area7,500 sqft (0.172 acres)
Garage Area240 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address318 ROSS DR
CityMILL VALLEY
StateCA
Zip94941-3811
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionLOT 42
Legal SubdivisionKAY PARK 02
Legal Lot Number42
JurisdictionMARIN CA
Township / Civil DivisionSOUTHEAST MARIN
Census Block Group3
Census Block3025
Census Tract128100

Owner

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 Record2 Company Names on Record
Mailing Address44750 TAN BARK RD, GUALALA, CA 95445-8706
Owner TypeCompany
VestingBorrower in Default

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last Transfer DateJul 23, 2021
Transfer Doc0000049076
Record UpdatedOct 29, 2026

August 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionMARIN CA
Recording DateAug 2, 2021
Property Address318 ROSS DR, MILL VALLEY, CA 94941-3811
Document Number0000049076
Map ReferenceMB 6 PG 1
Instrument DateJul 23, 2021
Instrument2021-0049076
Transaction TypeTransfer
Record UpdatedJun 7, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
Address44750 TAN BARK RD, GUALALA, CA 95445-8706

Tax Assessment & Valuation

Source: Marin County assessment roll, as of July 13, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyMarin County
Elementary School DistrictMill Valley Elementary School District (KG - 08)
Secondary School DistrictTamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$489,775 (+2%) Land $303,369 Building $186,406
2025$11,036.00 (+5.36%)$480,172 (+4.04%) Land $297,421 Building $182,751
2023$10,475.00 (+3.55%)$461,528 Land $285,873 Building $175,655
2022$10,116.00

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 ZoneZone AE
high risk
100-Year FloodplainYes
1% annual chance
FloodwayYes
Base Flood ElevationVaries along the reach; see FIRM
Flood Insurance RequirementRequired
federally backed loans
Flood Insurance CostPremium on Record
median of 88 policies
Community Rating SystemClass 6 (20% premium discount)
Nearby Flood Policies88 in force
Nearby Flood Claims120 (1978–2026)
Claims Outside the SFHA13 of 120
Most Recent ClaimJan 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

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

Wildfire RiskLow
lower than 64% of the US · lower than 79% of California
Wildfire Likelihood0.05% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 SystemMARIN MUNICIPAL WATER DISTRICT
serves 188,116 people · EPA ID CA2110002
Water SourceSurface water
Last State InspectionAug 2023
LeadUnder 1 ppb (2019–2021)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 436 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
T-Mobile
Fixed Wireless		100 / 20
AT&T
DSL · Fiber in parts of the area		100 / 20

May also be available: Unwired, Verizon.

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