1. Home
  2. California
  3. Contra Costa County
  4. Antioch
  5. Grass Valley Way

5171 Grass Valley Way, Antioch, CA 94531 Property Records

Contra Costa County property record for 5171 Grass Valley Way, Antioch, CA 94531

Property Summary

Property TypeSingle Family Home
Details4 bd · 2.5 ba · 1,382 sqft · built 1992
Lot Size0.115 acres (5,000 sqft)
Owner2 Individual Names on Record
Last Sale$425,000 (Mar 2018)
Tax Bill$5,982 (2025)
Deeds & MortgagesOct 2021 Mortgage
May 2020 Transfer
+ 3 more
Flood ZoneZone X (minimal risk)
APN056-180-018-6

Property Details

APN / Parcel Number

Primary APN056-180-018-6
Alternative APN
  • 056-180-018

Interior

Bedrooms4 Beds
Full Baths2.5 Baths
Half Baths1 Half Bath
Total Rooms7 Rooms
Stories2 Stories
Building Area1,382 sqft Living Area
1st Floor Area651 sqft
2nd Floor Area731 sqft

Exterior

Year BuiltBuilt 1992
Effective Year BuiltEffective 1993
Lot Area5,000 sqft (0.115 acres)
Garage TypeAttached
Garage Area510 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address5171 GRASS VALLEY WAY
CityANTIOCH
StateCA
Zip94531-8436
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT7587 L223
Legal SubdivisionWILLIAMSON RANCH SUB 7587
Legal Tract7587
Legal Lot Number223
JurisdictionCONTRA COSTA CA
Township / Civil DivisionEAST CONTRA COSTA
Census Block Group1
Census Block1017
Census Tract303207

Historic Designation

Source: NPS National Register of Historic Places, as of August 1, 2026

Historic DistrictWithin the Shannon-Williamson Ranch
listed 1987 · 12 contributing resources · NRIS 87000003

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

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 Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Oct 27, 2021Deed of Trust, Mortgage · Conventional Mortgage
CROSSCOUNTRY MORTGAGE LLC
May 28, 2020Quit Claim Deed, Transfer
NOT AVAILABLE
May 6, 2020Intrafamily Transfer, Transfer · FHA Mortgage
CROSSCOUNTRY MORTGAGE LLC
Aug 7, 2019Quit Claim Deed, Transfer
NOT AVAILABLE
Mar 29, 2018Grant Deed, Transfer · FHA Mortgage
CALIBER HM LOANS

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleMar 29, 2018 · Amount on Record
Deed SaleMar 29, 2018 · Amount on Record
Prior SaleNov 9, 2001 · Amount on Record
Deed Document Number201848679
Last Transfer DateMay 20, 2020
Transfer Doc0000101692
Record UpdatedOct 29, 2026

October 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
Transaction TypeMortgage
Record UpdatedMay 30, 2023
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436

Mortgage

Document Number0000300536
DateOct 27, 2021
Instrument2021-300536
Lender
NameCROSSCOUNTRY MORTGAGE LLC
TypeMortgage Company
AddressBRECKSVILLE, OH 44141
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueNov 1, 2051

May 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateMay 28, 2020
Property Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
Document Number0000101692
Instrument DateMay 20, 2020
Instrument101692
Transaction TypeTransfer
Record UpdatedJun 4, 2020
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants with Right of Survivorship
Address5171 GRASS VALLEY WAY ANTIOCH CA 945318436, ANTIOCH, CA 94531-8436

May 2020: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateMay 6, 2020
Property Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
Document Number0000086190
Map ReferenceMB 358 PG 4
Instrument DateMay 1, 2020
Instrument2020-086190
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

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
Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436

Mortgage

Document Number0000086191
DateMay 6, 2020
Instrument2020-086191
Lender
NameCROSSCOUNTRY MORTGAGE LLC
TypeNon-Lending Institution
AddressBRECKSVILLE, OH 44141
Agreement
TypeFHA Mortgage
AmountAmount Recorded
Term361 Months
DueJun 1, 2050

August 2019: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateAug 7, 2019
Property Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
Document Number0000124198
Instrument DateAug 3, 2019
Instrument124198
Transaction TypeTransfer
Record UpdatedAug 20, 2019
Title CompanyNOT AVAILABLE

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants with Right of Survivorship
Address5171 GRASS VALLEY WAY ANTIOCH CA 945318436, ANTIOCH, CA 94531-8436

March 2018: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 29, 2018
Property Address5171 GRASS VALLEY WAY, ANTIOCH, CA 94531-8436
Document Number0000048679
Instrument DateMar 28, 2018
Instrument48679
Transaction TypeTransfer
Record UpdatedApr 5, 2018
Title CompanyOLD REPUBLIC TITLE

Transaction

AmountAmount Recorded
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$467.50
Amount AccuracyFull Value
Additional
  • Notice of Default
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants with Right of Survivorship
Address5171 GRASS VALLEY WAY ANTIOCH CA 945318436, ANTIOCH, CA 94531-8436

Mortgage

Document Number48680
DateMar 29, 2018
Instrument48680
Lender
NameCALIBER HM LOANS
TypeFunding / Finance Company
AddressIRVING, TX 75063
Agreement
TypeFHA Mortgage
AmountAmount Recorded
Term360 Months
DueMar 28, 2048

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$521,803 (+2%) Land $179,888 Building $341,915
2025$5,982.00 (+10.21%) Homeowner's exemption$511,572 (+10.06%) Land $176,361 Building $335,211
2023$5,428.00 (+1.57%)$464,796 Land $169,513 Building $295,283
2022$5,344.00

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 RiskModerate
above 51% of the US · lower than 70% of California
Wildfire Likelihood0.1% annual chance
ExposureIndirect
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 638 locations within half a mile, as of December 31, 2025

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

Nearby Properties on Grass Valley Way

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures