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3557 Keystone Loop, Discovery Bay, CA 94505 Property Records

Contra Costa County property record for 3557 Keystone Loop, Discovery Bay, CA 94505 · Last verified August 2026

Property Highlights

Property TypeResidential > Single Family > Home
Bedrooms4 Beds
Bathrooms4 Baths
Year BuiltBuilt 2004
Square Footage4,088 sqft Living Area
Lot Size6,950 sqft (0.16 acres)
OccupancyOwner Occupied
Last Sale$878,000 (2025)
Tax Bill$11,802.00 (2025)

Property Details

APN / Parcel Number

Primary APN011-421-026-3
Alternative APN
  • 011-421-026

Interior

Bedrooms4 Beds
Full Baths4 Baths
Total Rooms11 Rooms
Building Area4,088 sqft Living Area
1st Floor1,991 sqft 1st Floor
2nd Floor2,097 sqft 2nd Floor
Stories2 Stories

Exterior

Year BuiltBuilt 2003
Effective Year BuiltEffective 2004
Architectural StyleCluster Style
Lot Area6,950 sqft (0.16 acres)
Parking Spaces2 Parking Spaces
Garage TypeAttached Garage
Garage Area715 sqft Garage

Utilities and HVAC

Cooling SystemCentral Cooling

Location & Zoning

Street Address3557 KEYSTONE LOOP
CityDISCOVERY BAY
StateCA
Zip94505-2322
Property UsageResidential Property Usage
TypeResidential > Single Family > Home
Legal DescriptionT8430 L 26 & POR L 25
Legal SubdivisionSUBDIVISION 8430
Legal Tract8430
Legal Lot Number26,25
JurisdictionCONTRA COSTA CA
Minor Civil DivisionEAST CONTRA COSTA
Census Blockgroup3
Census Block3001
Census Tract304007

Owner

Source: Contra Costa County records · APN 011-421-026-3

Assessment roll updated July 14, 2026 · Last verified August 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 File
Mailing Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
OccupancyOwner Occupied
Owner TypeOwner is an Individual, Couple or Unincorporated Entity
VestingCommunity Property

Deeds, Mortgages & Sale History

DateDocument
Mar 03, 2023Grant Deed, Transfer · Conventional Mortgage
ASSET FINANCIAL CENTER INC
Oct 19, 2020Grant Deed, Transfer · Conventional Mortgage
DIVINE MTG CAP
Apr 14, 2020Intrafamily Transfer, Transfer · Veterans Administration Mortgage
UNITED WHOLESALE MORTGAGE
Mar 31, 2020Quit Claim Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleJan 27, 2025 · Amount on Record
Deed SaleJan 27, 2025 · Amount on Record
Prior SaleMar 03, 2023 · Amount on Record
Deed Doc Number20257726
Prior Transfer DateApr 07, 2020
Prior Transfer Doc0000070246
Record RefreshedSep 20, 2026

March 2023: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 03, 2023
Property Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Document Number0000019893
Map ReferenceMB 436 PG 17
Instrument DateMar 01, 2023
Instrument2023-019893
Transaction TypeTransfer
Record UpdatedMar 14, 2023
Title CompanyOLD REPUBLIC TITLE, OLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded Values by County
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322

Mortgage

Document Number0000019894
DateMar 03, 2023
Instrument2023-019894
Lender
NameASSET FINANCIAL CENTER INC
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueApr 01, 2053

October 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateOct 19, 2020
Property Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Document Number0000241636
Instrument DateOct 06, 2020
Instrument241636
Transaction TypeTransfer
Record UpdatedOct 28, 2020
Title CompanyOLD REPUBLIC TITLE

Transaction

AmountAmount Recorded
DownpaymentDownpayment on File
Loan-to-Value (LTV)LTV on Record
Tax$831.00
Amount AccuracyFull Value
Additional
  • Arms Length Transaction

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address3557 KEYSTONE LOOP DISCOVERY BAY CA 945052322, DISCOVERY BAY, CA 94505-2322

Mortgage

Document Number241637
DateOct 19, 2020
Instrument241637
Lender
NameDIVINE MTG CAP
AddressCITY OF INDUSTRY, CA 91748
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term360 Months
DueOct 18, 2050

April 2020: Intrafamily Transfer, Transfer

Document TypeIntrafamily Transfer
JurisdictionCONTRA COSTA CA
Recording DateApr 14, 2020
Property Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Document Number0000070246
Map ReferenceMB 436 PG 17
Instrument DateApr 07, 2020
Instrument2020-070246
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyFIDELITY NATIONAL TITLE CO

Transaction

Tax$0.00
Amount AccuracyTransfer Tax Exempt
Additional
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322

Mortgage

Document Number0000070247
DateApr 14, 2020
Instrument2020-070247
Lender
NameUNITED WHOLESALE MORTGAGE
TypeMortgage Company
Agreement
TypeVeterans Administration Mortgage
AmountAmount Recorded
Term361 Months
DueMay 01, 2050

March 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateMar 31, 2020
Property Address3557 KEYSTONE LOOP, DISCOVERY BAY, CA 94505-2322
Document Number0000060763
Instrument DateMar 23, 2020
Instrument60763
Transaction TypeTransfer
Record UpdatedApr 15, 2020
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim Document
  • Interfamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipCommunity Property
Address3557 KEYSTONE LOOP DISCOVERY BAY CA 945052322, DISCOVERY BAY, CA 94505-2322

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified August 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
Elementary School DistrictByron Union Elementary School District (KG - 08)
Secondary School DistrictLiberty Union High School District (09 - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$895,560 (+1.27%) Land $163,200 Building $732,360
2025$11,802.00 (+12.65%) Homeowner's exemption$884,340 (+12.58%) Land $130,050 Building $754,290
2023$10,477.00 (+1.66%)$785,502 Land $104,040 Building $681,462
2022$10,306.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Flood HazardModerate
500-Year FloodplainYes
Special Flood Hazard AreaNo
Nearest Special Flood Hazard AreaZone A, within 500 ft

Wildfire

Wildfire RiskNot rated
no burnable land in reach
Wildfire LikelihoodNegligible
ExposureNone
beyond ember reach

Values are read at the parcel center point; lenders make the official flood determination.

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