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4320 Harmon Rd, El Sobrante, CA 94803 Property Records

Contra Costa County property record for 4320 Harmon Rd, El Sobrante, CA 94803 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details6 bd · 2 ba · 2,313 sqft · built 1951
Lot Size32 acres (1,393,920 sqft)
Owner2 Individual Names on File
Last Sale$50,000 (Oct 2004)
Tax Bill$7,896 (2025)
Deeds & MortgagesMay 2021 Mortgage
Oct 2019 Mortgage
Flood ZoneZone X (minimal risk)
APN435-035-003-1

Property Details

APN / Parcel Number

Primary APN435-035-003-1
Alternative APN
  • 435-035-003

Interior

Bedrooms6 Beds
Full Baths2 Baths
Total Rooms9 Rooms
Stories2 Stories
Building Area2,313 sqft Living Area
1st Floor Area1,274 sqft
2nd Floor Area1,039 sqft

Exterior

Year BuiltBuilt 1951
Effective Year BuiltEffective 1951
Lot Area1,393,920 sqft
Garage TypeAttached
Garage Area252 sqft
Parking Spaces1 Parking Space

Utilities, Heating & Cooling

Heating SystemCentral

Location & Zoning

Street Address4320 HARMON RD
CityEL SOBRANTE
StateCA
Zip94803-3012
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionGREEN ACRES 32
Legal SubdivisionGREEN ACRES
Legal Lot Number32
JurisdictionCONTRA COSTA CA
Township / Civil DivisionWEST CONTRA COSTA
Census Block Group1
Census Block1004
Census Tract361000

Owner

Source: Contra Costa County records · APN 435-035-003-1

Assessment roll updated July 14, 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 Record2 Individual Names on File
Mailing Address4320 HARMON RD, EL SOBRANTE, CA 94803-3012
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
May 06, 2021Intrafamily Transfer, Transfer · Conventional Mortgage
QUICKEN LOANS LLC
Oct 30, 2019Deed of Trust, Mortgage · Conventional Mortgage
QUICKEN LNS

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleOct 15, 2004 · Amount on Record
Deed SaleOct 15, 2004 · Amount on Record
Prior SaleSep 24, 2004 · Amount on Record
Deed Document Number2004396682
Last Transfer DateFeb 17, 2015
Transfer Doc0000026754
Record UpdatedSep 20, 2026

May 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateMay 06, 2021
Property Address4320 HARMON RD, EL SOBRANTE, CA 94803-3012
Document Number0000136931
Map ReferenceMB 41 PG 35
Instrument DateMar 21, 2021
Instrument2021-136931
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyAMROCK INC, AMROCK LLC

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address4320 HARMON RD, EL SOBRANTE, CA 94803-3012
InvestorPossibly a Property Investor

Mortgage

Document Number0000136932
DateMay 06, 2021
Instrument2021-136932
Lender
NameQUICKEN LOANS LLC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term179 Months
DueApr 01, 2036

October 2019: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address4320 HARMON RD, EL SOBRANTE, CA 94803-3012
Document Number0000195537
Instrument DateOct 30, 2019
Transaction TypeMortgage
Record UpdatedNov 13, 2019
Title CompanyOLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants with Right of Survivorship
Address4320 HARMON RD EL SOBRANTE CA 948033012, EL SOBRANTE, CA 94803-3012

Mortgage

Document Number0000195537
DateNov 04, 2019
Instrument195537
Lender
NameQUICKEN LNS
TypeFunding / Finance Company
AddressDETROIT, MI 48226-1906
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term240 Months
DueNov 03, 2039

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
Unified School DistrictWest Contra Costa Unified School District (KG - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$524,773 (+2%) Land $283,414 Building $241,359
2025$7,896.00 (+4.53%)$514,484 (+4.04%) Land $277,857 Building $236,627
2023$7,554.00 (+3.04%)$494,508 Land $267,068 Building $227,440
2022$7,331.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133610001, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Claims2 (1993–1995)
Most Recent ClaimJan 1995, river or lake flooding, Severe Winter Storms, Flooding, Landslides, Mud Flows

Wildfire

Wildfire RiskModerate
above 45% of the US · above 26% of California
Wildfire LikelihoodAbout 1 in 1,266 per year
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 546 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
Sonic TelecomFiber10,000 / 10,000
AT&TFiber5,000 / 5,000
XfinityCable2,000 / 250

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

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