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401 Boulder Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 401 Boulder Dr, Antioch, CA 94509

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 2,552 sqft · built 1986
Lot Size0.186 acres (8,092 sqft)
Owner2 Trust Names on File
Tax Bill$5,264 (2025)
Deeds & MortgagesMay 2026 Transfer
Nov 2018 Transfer
Flood ZoneZone X (minimal risk)
APN072-213-005-1

Property Details

APN / Parcel Number

Primary APN072-213-005-1
Alternative APN
  • 072-213-005

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms10 Rooms
Stories2 Stories
Building Area2,552 sqft Living Area
1st Floor Area1,302 sqft
2nd Floor Area1,250 sqft

Exterior

Year BuiltBuilt 1986
Effective Year BuiltEffective 1987
Lot Area8,092 sqft (0.186 acres)
Garage TypeAttached
Garage Area660 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address401 BOULDER DR
CityANTIOCH
StateCA
Zip94509-6907
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal DescriptionT6387A L0027 B
Legal SubdivisionSUBDIVISION 6387
Legal Tract6387A
Legal Lot Number0027
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group1
Census Block1002
Census Tract355109

Owner

401 Boulder Dr is held in a trust since October 2018.

Source: Contra Costa County records, as of July 14, 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 Trust Names on File
Mailing Address4332 TOMPKINS AVE, OAKLAND, CA 94619-2821
Owner TypeCompany
VestingTrust, Revocable Trust

Deeds, Mortgages & Sale History

DateDocument
May 12, 2026Affidavit of Death of Trustee, Transfer
Nov 21, 2018Quit Claim Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed Names2 Names on Deed
Last Transfer DateOct 30, 2018
Transfer Doc0000188215
Record UpdatedSep 20, 2026

May 2026: Affidavit of Death of Trustee, Transfer

Document TypeAffidavit of Death of Trustee
JurisdictionCONTRA COSTA CA
Recording DateMay 12, 2026
Property Address401 BOULDER DR, ANTIOCH, CA 94509-6907
Document Number0000049539
Instrument DateMay 6, 2026
Instrument202649539
Transaction TypeTransfer
Record UpdatedAug 28, 2026

Transaction

Tax$0.00
Amount AccuracyFull Amount Stated
Additional
  • Multiple Parcels

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address4332 TOMPKINS AVE, OAKLAND, CA 94619-2821

November 2018: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 21, 2018
Property Address401 BOULDER DR, ANTIOCH, CA 94509-6907
Document Number0000188215
Instrument DateOct 30, 2018
Instrument188215
Transaction TypeTransfer
Record UpdatedDec 4, 2018
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address401 BOULDER DR ANTIOCH CA 945096907, ANTIOCH, CA 94509-6907

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$434,997 (+2%) Land $88,401 Building $346,596
2025$5,264.00 (+5.26%) Homeowner's exemption$426,468 (+4.04%) Land $86,668 Building $339,800
2023$5,001.00 (+1.61%) Homeowner's exemption$409,909 Land $83,303 Building $326,606
2022$4,922.00

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

Flood

FEMA maps place 401 Boulder Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 401 Boulder Dr 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
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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