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31091 S Koster Rd, Tracy, CA 95304 Property Records

San Joaquin County property record for 31091 S Koster Rd, Tracy, CA 95304

Property Summary

Property TypeRural Home
Details2 bd · 1 ba · 944 sqft · built 1948
Lot Size1 acres (43,681 sqft)
OwnerCompany Name on File
Last Sale$539,500 (Oct 2020)
Tax Bill$6,466 (2025)
Deeds & MortgagesOct 2021 Mortgage
Apr 2021 Transfer
+ 1 more
Flood ZoneZone X (minimal risk)
APN255-310-140-000

Property Details

APN / Parcel Number

Primary APN255-310-140-000

Interior

Bedrooms2 Beds
Full Baths1 Bath
Stories1 Story
Building Area944 sqft Living Area

Exterior

Year BuiltBuilt 1948
Architectural StyleOther
Construction TypeWood
Lot Area43,681 sqft (1 acres)
Garage TypeMixed
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral
Heating SystemForced Air

Location & Zoning

Street Address31091 S KOSTER RD
CityTRACY
StateCA
Zip95304-8851
Property CategoryResidential
Property TypeResidential > Single Family > Rural Home
Local Zoning Code19
Legal DescriptionREDRAW 901115 FR ORIG APN 255110348
Legal Range06E
Legal Township03S
Legal Section17
JurisdictionSAN JOAQUIN CA
Township / Civil DivisionTRACY
Census Block Group1
Census Block1005
Census Tract5503

Owner

Source: San Joaquin County records · APN 255-310-140-000

Assessment roll updated July 1, 2025 · Last verified October 2025

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of RecordCompany Name on File
Co-owner2 Verified Secondary Owners
Mailing Address31091 S KOSTER RD, TRACY, CA 95304-8851
OccupancyOwner Occupied
Owner TypeCompany, Secondary Individual
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Oct 06, 2021Deed of Trust, Mortgage · Conventional Mortgage
CALIBER HOME LOANS INC
Apr 26, 2021Intrafamily Transfer, Transfer
Oct 16, 2020Grant Deed, Transfer · Conventional Mortgage
CALIBER HOME LOANS INC

Assessor's Deed Record

Deed Names3 Verified Names on Deed
Last SaleOct 16, 2020 · Amount on Record
Deed SaleOct 16, 2020 · Amount on Record
Prior SaleOct 16, 2020 · Amount on Record
Deed Document Number0000138961
Last Transfer DateApr 26, 2021
Transfer Doc0000072886
Record UpdatedJun 07, 2026

October 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionSAN JOAQUIN CA
Property Address31091 S KOSTER RD, TRACY, CA 95304-8851
Transaction TypeMortgage
Record UpdatedOct 19, 2021
Title CompanyWFG NATIONAL TITLE COMPANY

Transferred To (Grantee/Buyer)

NameVerified Name
Address31091 S KOSTER RD, TRACY, CA 95304-8851

Mortgage

Document Number0000167708
DateOct 06, 2021
Instrument2021-167708
Lender
NameCALIBER HOME LOANS INC
TypeMortgage Company
AddressCOPPELL, TX 75019
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueOct 01, 2051

April 2021: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionSAN JOAQUIN CA
Recording DateApr 26, 2021
Property Address31091 S KOSTER RD, TRACY, CA 95304-8851
Document Number0000072886
Instrument DateApr 11, 2021
Instrument2021-072886
Transaction TypeTransfer
Record UpdatedJun 07, 2023

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipFamily Trust
Address31091 S KOSTER RD, TRACY, CA 95304-8851

October 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionSAN JOAQUIN CA
Recording DateOct 16, 2020
Property Address31091 S KOSTER RD, TRACY, CA 95304-8851
Document Number0000138961
Instrument DateOct 07, 2020
Instrument2020-138961
Transaction TypeTransfer
Record UpdatedAug 03, 2021
Title CompanyCHICAGO TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property with Right of Survivorship
Address31091 S KOSTER RD, TRACY, CA 95304-8851

Mortgage

Document Number0000138962
DateOct 16, 2020
Instrument2020-138962
Lender
NameCALIBER HOME LOANS INC
TypeMortgage Company
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueNov 01, 2050

Tax Assessment & Valuation

Source: San Joaquin County records · Assessment roll updated July 1, 2025 · Last verified October 2025

Property Jurisdictions

TypeName
StateCalifornia
CountySan Joaquin County
Secondary School DistrictTracy Unified School District (9-12) (09 - 12)
Elementary School DistrictNew Jerusalem Elementary School District (KG - 08)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2025$6,466.00 (+2.5%)$613,736 (+4.04%) Land $216,485 Building $397,251
2023$6,308.00 (+4.23%)$589,906 Land $208,080 Building $381,826
2022$6,052.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of September 27, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Community Rating SystemClass 7 (15% premium discount)
Nearby Flood Policies3 in force

Wildfire

Wildfire RiskModerate
above 57% of the US · lower than 66% of California
Wildfire Likelihood0.1% annual chance
ExposureNone
beyond ember reach

Values are read at the parcel center point; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

ProviderMax Down / Up (Mbps)
ezWave
Fixed Wireless		1,000 / 200
Zinnia Networks
Fixed Wireless		400 / 80
UnWired Broadband Holding
Fixed Wireless		400 / 50
Verizon
Fixed Wireless		300 / 20
T-Mobile USA
Fixed Wireless		100 / 20
Cal.net
Fixed Wireless		100 / 20
AT&T
Fixed Wireless		25 / 3

Based on FCC filings for 57 locations within half a mile of this property.

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