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1600 A St, Antioch, CA 94509 Property Records

Contra Costa County property record for 1600 A St, Antioch, CA 94509

Property Summary

Property TypeCommercial Office
Details3,200 sqft · built 1954
Lot Size0.221 acres (9,630 sqft)
Owner2 Company Names on Record
Last Sale$395,000 (Jan 2002)
Tax Bill$7,102 (2025)
Deeds & MortgagesJun 2026 Transfer
Apr 2020 Transfer
Flood ZoneZone X (minimal risk)
APN067-242-045-2

Property Details

APN / Parcel Number

Primary APN067-242-045-2
Alternative APN
  • 067-242-045

Interior

Total Rooms1 Room
Stories1 Story
Building Area3,200 sqft Gross Area
1st Floor Area3,200 sqft

Exterior

Year BuiltBuilt 1954
Effective Year BuiltEffective 1964
Exterior MaterialConcrete Block
Construction TypeConcrete Block
Roof TypeMansard
Roof MaterialBuilt-Up Asphalt
Lot Area9,630 sqft (0.221 acres)
Lot Dimensions107 ft deep x 90 ft wide
View / LotCorner
Garage Area5,000 sqft

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air with A/C

Location & Zoning

Street Address1600 A ST
CityANTIOCH
StateCA
Zip94509-2358
Property CategoryCommercial
Property TypeCommercial > Office > Commercial Office
Legal DescriptionROSA ADDN POR LOTS 21 & 22 BLK 5
Legal SubdivisionROSA ADD
Legal Block5
Legal Lot Number21,22
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group2
Census Block2003
Census Tract306003

Owner

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 Company Names on Record
Mailing Address561 IDYLBERRY RD, SAN RAFAEL, CA 94903-1266
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Jun 25, 2026Affidavit of Death of Trustee, Transfer
Apr 16, 2020Quit Claim Deed, Transfer
NOT AVAILABLE

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleJan 25, 2002 · Amount on Record
Deed SaleJan 25, 2002 · Amount on Record
Deed Document Number200225421
Last Transfer DateMar 12, 2020
Transfer Doc0000072534
Record UpdatedOct 29, 2026

June 2026: Affidavit of Death of Trustee, Transfer

Document TypeAffidavit of Death of Trustee
JurisdictionCONTRA COSTA CA
Recording DateJun 25, 2026
Property Address1600 A ST, ANTIOCH, CA 94509-2358
Document Number0000067087
Instrument DateJun 19, 2026
Instrument202667087
Transaction TypeTransfer
Record UpdatedAug 30, 2026

Transaction

Tax$0.00
Amount AccuracyFull Amount Stated

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipTrust
Address561 IDYLBERRY RD, SAN RAFAEL, CA 94903-1266

April 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateApr 16, 2020
Property Address1600 A ST, ANTIOCH, CA 94509-2358
Document Number0000072534
Instrument DateMar 12, 2020
Instrument72534
Transaction TypeTransfer
Record UpdatedMay 13, 2020
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipRevocable Trust
Address561 IDYLBERRY RD SAN RAFAEL CA 949031266, SAN RAFAEL, CA 94903-1266

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$595,188 (+2%) Land $145,099 Building $450,089
2025$7,102.00 (+5.03%)$583,518 (+4.04%) Land $142,254 Building $441,264
2023$6,762.00 (+1.64%)$560,861 Land $136,731 Building $424,130
2022$6,653.00

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 RiskNot rated
no burnable land within 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 754 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · Fixed Wireless, DSL in parts of the area		5,000 / 5,000
Xfinity
Cable		2,000 / 250
Unwired
Fixed Wireless		300 / 25

May also be available: T-Mobile, Verizon.

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