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324 William Ave, Larkspur, CA 94939 Property Records

Marin County property record for 324 William Ave, Larkspur, CA 94939

Property Summary

Property TypeSingle Family Home
Details4 bd · 2 ba · 1,472 sqft · built 1943
Lot Size0.1 acres (4,368 sqft)
Owner2 Trust Names on File
Tax Bill$5,458 (2025)
Deeds & MortgagesSep 2025 Line of Credit
Flood ZoneZone X (moderate risk)
APN021-211-14

Property Details

APN / Parcel Number

Primary APN021-211-14

Interior

Bedrooms4 Beds
Full Baths2 Baths
Total Rooms6 Rooms
Stories2 Stories
Building Area1,472 sqft Living Area
Basement Area162 sqft

Exterior

Year BuiltBuilt 1943
Effective Year BuiltEffective 1964
Architectural StyleContemporary
Exterior MaterialWood
Construction TypeFrame
Roof MaterialComposition Shingle
Lot Area4,368 sqft (0.1 acres)
Garage Area312 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemFloor/Wall Furnace
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address324 WILLIAM AVE
CityLARKSPUR
StateCA
Zip94939-1529
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal SubdivisionHEATHER GARDENS 03
Legal Lot Number58
JurisdictionMARIN CA
Township / Civil DivisionROSS VALLEY
Census Block Group1
Census Block1002
Census Tract120002

Owner

324 William Ave is owner-occupied and held in a trust since August 2025.

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

Owner of Record2 Trust Names on File
Mailing Address324 WILLIAM AVE, LARKSPUR, CA 94939-1529
OccupancyOwner Occupied
Owner TypeCompany
VestingTrust, Revocable Trust

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 Names2 Names on Deed
Last SaleSep 9, 1998
Deed SaleSep 9, 1998
Deed Document Number199864788
Last Transfer DateAug 30, 2025
Transfer Doc0000024101
Record UpdatedSep 20, 2026

September 2025: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionMARIN CA
Recording DateSep 17, 2025
Property Address324 WILLIAM AVE, LARKSPUR, CA 94939-1529
Document Number0000024101
Map ReferenceMB 5 PG 97
Instrument DateAug 30, 2025
Instrument2025-0024101
Transaction TypeTransfer
Record UpdatedOct 2, 2025
Title CompanyMORTGAGE CONNECT LP

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name
Address324 WILLIAM AVE, LARKSPUR, CA 94939-1529

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address324 WILLIAM AVE, LARKSPUR, CA 94939-1529

Mortgage

Document Number0000024102
DateSep 17, 2025
Instrument2025-0024102
Lender
NamePENTAGON FCU
TypeCredit Union
Agreement
TypeLine of Credit
AmountAmount on Record
Term360 Months
DueSep 1, 2055
Interest
Rate TypeAdjustable Rate
Change FrequencyMonthly

Tax Assessment & Valuation

The 2025 property tax bill for 324 William Ave was $5,458.

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

Property Jurisdictions

TypeName
StateCalifornia
CountyMarin County
MunicipalityLarkspur City
Elementary School DistrictLarkspur Elementary School District (KG - 08)
Secondary School DistrictTamalpais Union High School District (09 - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$276,955 (+2%) Land $77,278 Building $199,677
2025$5,458.00 Homeowner's exemption$271,526 Land $75,763 Building $195,763
2023$5,157.00 (+2.36%) Homeowner's exemption$260,983 Land $72,821 Building $188,162
2022$5,038.00

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

Flood

FEMA maps place 324 William Ave in Zone X, an area of moderate flood risk, within 500 ft of a high-risk flood zone.

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

FEMA Flood ZoneZone X
moderate risk
500-Year FloodplainYes
0.2% annual chance
Nearest Special Flood Hazard AreaZone AE, within 500 ft
Flood Insurance RequirementNot required
lenders may require it
Flood Insurance CostPremium on File
median of 23 policies
Nearby Flood Policies23 in force
Nearby Flood Claims2 (2014–2017)
Most Recent ClaimJan 2017 · Severe Winter Storms, Flooding, And Mudslides

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 324 William Ave is low, with a 0.01% annual chance of wildfire.

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

Wildfire RiskLow
lower than 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureDirect
burnable vegetation

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 416 locations within half a mile, as of December 31, 2025

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

May also be available: Verizon.

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