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329 Boulder Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 329 Boulder Dr, Antioch, CA 94509

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 2,694 sqft · built 1989
Lot Size0.106 acres (4,600 sqft)
Owner2 Individual Names on Record
Last Sale$540,000 (Feb 2018)
Tax Bill$3,672 (2025)
Deeds & MortgagesFeb 2018 Transfer
Feb 2018 Sale
Flood ZoneZone X (minimal risk)
APN072-213-002-8

Property Details

APN / Parcel Number

Primary APN072-213-002-8
Alternative APN
  • 072-213-002

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms10 Rooms
Stories2 Stories
Building Area2,694 sqft Living Area
1st Floor Area1,457 sqft
2nd Floor Area1,237 sqft

Exterior

Year BuiltBuilt 1989
Effective Year BuiltEffective 1989
Lot Area4,600 sqft (0.106 acres)
Garage TypeAttached
Garage Area644 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address329 BOULDER DR
CityANTIOCH
StateCA
Zip94509-6207
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal DescriptionT6387 POR LOT 24
Legal SubdivisionSUBDIVISION 6387
Legal Tract6387
Legal Lot Number24
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group1
Census Block1002
Census Tract355109

Owner

Source: Contra Costa County records, as of July 14, 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 Address329 BOULDER DR, ANTIOCH, CA 94509-6207
OccupancyOwner Occupied
Owner TypeIndividual
VestingJoint Tenants

Deeds, Mortgages & Sale History

DateDocument
Feb 6, 2018Quit Claim Deed, Transfer
OLD REPUBLIC TITLE
Feb 6, 2018Grant Deed, Transfer
OLD REPUBLIC TITLE SF

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleFeb 6, 2018 · Amount on Record
Deed SaleFeb 6, 2018 · Amount on Record
Prior SaleMar 27, 2002 · Amount on Record
Deed Document Number201818587
Prior Transfer DateFeb 2, 2018
Prior Transfer Doc0000018588
Record UpdatedOct 29, 2026

February 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateFeb 6, 2018
Property Address329 BOULDER DR, ANTIOCH, CA 94509-6207
Document Number0000018588
Instrument DateFeb 2, 2018
Instrument18588
Transaction TypeTransfer
Record UpdatedFeb 12, 2018
Title CompanyOLD REPUBLIC TITLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipSeparate Estate/Property
Address329 BOULDER DR ANTIOCH CA 945096207, ANTIOCH, CA 94509-6207

February 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateFeb 6, 2018
Property Address329 BOULDER DR, ANTIOCH, CA 94509-6207
Document Number0000018587
Map ReferenceMB 282 PG 26
Instrument DateJan 18, 2018
Instrument2018-018587
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE SF

Transaction

AmountAmount Recorded
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Notice of Trustee Sale
  • Arm's Length
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address329 BOULDER DR, ANTIOCH, CA 94509-6207

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$283,177 (+2%) Land $97,486 Building $185,691
2025$3,672.00 (+5.58%)$277,625 (+4.04%) Land $95,575 Building $182,050
2023$3,478.00 (+1.49%)$266,846 Land $91,864 Building $174,982
2022$3,427.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

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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