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405 Agate Ct, Antioch, CA 94509 Property Records

Contra Costa County property record for 405 Agate Ct, Antioch, CA 94509

Property Summary

Property TypeSingle Family Home
Details5 bd · 3.5 ba · 2,496 sqft · built 1986
Lot Size0.229 acres (9,975 sqft)
Owner2 Individual Names on Record
Last Sale$620,000 (Sep 2026)
Tax Bill$5,374 (2025)
Deeds & MortgagesSep 2026 Sale & Mortgage
Jan 2024 Mortgage
Flood ZoneZone X (minimal risk)
APN072-231-011-7

Property Details

APN / Parcel Number

Primary APN072-231-011-7
Alternative APN
  • 072-231-011

Interior

Bedrooms5 Beds
Full Baths3.5 Baths
Half Baths1 Half Bath
Total Rooms10 Rooms
Stories2 Stories
Building Area2,496 sqft Living Area
Gross Area3,159 sqft
1st Floor Area1,280 sqft
2nd Floor Area1,216 sqft

Exterior

Year BuiltBuilt 1986
Effective Year BuiltEffective 2004
Lot Area9,975 sqft (0.229 acres)
Garage TypeAttached
Garage Area663 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address405 AGATE CT
CityANTIOCH
StateCA
Zip94509-6913
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal DescriptionT05614 L0026 B EX MR
Legal SubdivisionSUBDIVISION 5614
Legal Tract05614
Legal Lot Number26
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group1
Census Block1007
Census Tract355109

Owner

Source: Contra Costa County records, as of October 13, 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 Record
Mailing Address405 AGATE CT, ANTIOCH, CA 94509-6913
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Sep 25, 2026Grant Deed, Transfer · Conventional Mortgage
UNITED WHOLESALE MORTGAGE
Jan 25, 2024Deed of Trust, Mortgage · Conventional Mortgage
MICHAEL J TANNENBAUM

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleSep 25, 2026 · Amount on Record
Deed SaleSep 25, 2026 · Amount on Record
Prior SaleFeb 27, 2013 · Amount on Record
Deed Document Number2026101226
Prior Transfer DateApr 6, 2004
Prior Transfer Doc0000210588
Record UpdatedOct 29, 2026

September 2026: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateSep 25, 2026
Property Address405 AGATE CT, ANTIOCH, CA 94509-6913
Document Number0000101226
Instrument DateSep 23, 2026
Instrument2026101226
Transaction TypeTransfer
Record UpdatedOct 2, 2026
Title CompanyCHICAGO TITLE W, CHICAGO TITLE

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$68,882.00
Amount AccuracyFull Amount Stated
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address405 AGATE CT, ANTIOCH, CA 94509-6913

Mortgage

Document Number0000101227,
DateSep 25, 2026
Instrument2026101227
Lender
NameUNITED WHOLESALE MORTGAGE
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueOct 1, 2056
Interest
Rate TypeFixed Rate
Initial TypeFixed Rate
Max Rate-1%

January 2024: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address405 AGATE CT, ANTIOCH, CA 94509-6913
Transaction TypeMortgage
Record UpdatedFeb 2, 2024
Title CompanyCHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address405 AGATE CT, ANTIOCH, CA 94509-6913

Mortgage

Document Number0000008056
DateJan 25, 2024
Instrument2024-008056
Lender
NameMICHAEL J TANNENBAUM
TypePrivate Party
Address1747 CENTINELA AVE APT A, SANTA MONICA, CA 90404
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term13 Months
DueFeb 1, 2025

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityAntioch City
Unified School DistrictAntioch Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$441,741 (+2%) Land $122,773 Building $318,968
2025$5,374.00 (+5.21%) Homeowner's exemption$433,080 (+4.04%) Land $120,366 Building $312,714
2023$5,108.00 (+1.59%) Homeowner's exemption$416,265 Land $115,693 Building $300,572
2022$5,028.00

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

Flood

Source: FEMA National Flood Hazard Layer, effective October 12, 2026

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it

Values are read at the parcel center point; lenders make the official flood determination.

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
ExposureNone
beyond ember reach

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 SystemCITY OF ANTIOCH
serves 116,781 people · EPA ID CA0710001
Water SourceSurface water
Last State InspectionJan 2024
LeadUnder 1 ppb (2022–2024)
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.

Internet Providers

Source: FCC Broadband Data Collection, based on 645 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25
AT&T
DSL		100 / 20

May also be available: Verizon.

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