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4012 Steffa St, Antioch, CA 94509 Property Records

Contra Costa County property record for 4012 Steffa St, Antioch, CA 94509 · Last verified July 2026

Property Summary

Property TypeSingle Family Home
Details5 bd · 3.5 ba · 3,778 sqft · built 2012
Lot Size0.168 acres (7,324 sqft)
Owner2 Individual Names on File
Last Sale$900,000 (Nov 2021)
Tax Bill$11,734 (2025)
Deeds & MortgagesJan 2022 Mortgage
Nov 2021 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN089-600-029-6

Property Details

APN / Parcel Number

Primary APN089-600-029-6
Alternative APN
  • 089-600-029

Interior

Bedrooms5 Beds
Full Baths3.5 Baths
Half Baths1 Half Bath
Total Rooms10 Rooms
Stories2 Stories
Building Area3,778 sqft Living Area
1st Floor Area1,821 sqft
2nd Floor Area1,957 sqft

Exterior

Year BuiltBuilt 2012
Effective Year BuiltEffective 2012
Lot Area7,324 sqft (0.168 acres)
Garage TypeAttached
Garage Area630 sqft
Parking Spaces2 Parking Spaces

Location & Zoning

Street Address4012 STEFFA ST
CityANTIOCH
StateCA
Zip94509-4374
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT8586 L246
Legal SubdivisionBLACK DIAMOND RANCH SUB 8586 U
Legal Tract8586
Legal Lot Number246
JurisdictionCONTRA COSTA CA
Township / Civil DivisionANTIOCH-PITTSBURG
Census Block Group2
Census Block2010
Census Tract313106

Owner

Source: Contra Costa County records · APN 089-600-029-6

Assessment roll updated July 14, 2026 · Last verified July 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 Address4012 STEFFA ST, ANTIOCH, CA 94509-4374
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

DateDocument
Jan 18, 2022Deed of Trust, Mortgage · Conventional Mortgage
US BANK NA
Nov 19, 2021Grant Deed, Transfer · Conventional Mortgage
WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names2 Verified Names on Deed
Last SaleNov 19, 2021 · Amount on Record
Deed SaleNov 19, 2021 · Amount on Record
Prior SaleJul 26, 2012 · Amount on Record
Deed Document Number2021320221
Record UpdatedSep 20, 2026

January 2022: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address4012 STEFFA ST, ANTIOCH, CA 94509-4374
Transaction TypeMortgage
Record UpdatedNov 03, 2022
Title CompanyWFG NATIONAL TITLE

Transferred To (Grantee/Buyer)

NameVerified Name
Address4012 STEFFA ST, ANTIOCH, CA 94509-4374

Mortgage

Document Number0000010636
DateJan 18, 2022
Instrument2022-010636
Lender
NameUS BANK NA
TypeBank
AddressOWENSBORO, KY 42301
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueFeb 01, 2052
Interest
Rate TypeAdjustable Rate
Rate2.5%
Type Change DateFeb 01, 2032
Change FrequencyAnnually
Min Rate At Change2.75%
Max Rate At Change7.5%
Index1-Year CMT
Max Rate7.5%

November 2021: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateNov 19, 2021
Property Address4012 STEFFA ST, ANTIOCH, CA 94509-4374
Document Number0000320221
Map ReferenceMB 504 PG 32
Instrument DateNov 16, 2021
Instrument2021-320221
Transaction TypeTransfer
Record UpdatedNov 03, 2022
Title CompanyFIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO

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
Address6380 STONERIDGE MALL RD APT J212, J212, PLEASANTON, CA 94588-8066

Mortgage

Document Number0000320222
DateNov 19, 2021
Instrument2021-320222
Lender
NameWELLS FARGO BANK NA
TypeBank
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term361 Months
DueDec 01, 2051
Interest
Rate TypeAdjustable Rate

Tax Assessment & Valuation

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

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityAntioch City
Unified School DistrictAntioch Unified School District (KG - 12)

Tax Bill & Assessment History

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

YearTax BillAssessed Value
2026$850,000 (-) Land $236,112 Building $613,888
2025$11,734.00 (+2.51%) Homeowner's exemption$850,000 (+2.78%) Land $236,111 Building $613,889
2023$11,447.00 (-6.06%) Homeowner's exemption$827,000 Land $230,000 Building $597,000
2022$12,186.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133131062, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026

Flood

FEMA Flood ZoneZone X
Special Flood Hazard AreaNo
Flood HazardMinimal
500-Year FloodplainNo
Nearby Flood Policies5 in force

Wildfire

Wildfire RiskHigh
above 84% of the US · above 64% of California
Wildfire LikelihoodAbout 1 in 149 per year
ExposureDirect
burnable vegetation at the parcel

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, availability as of December 31, 2025 · Published October 2026 · based on 264 locations within about half a mile of this property

ProviderTechnologyDownload / Upload (Mbps)
AT&TFiber5,000 / 5,000
XfinityCable2,000 / 250
VerizonFixed Wireless300 / 20
T-Mobile USAFixed Wireless100 / 20

May also be available at this address: AT&T. Availability varies by address; speeds are provider-advertised maximums, not measured.

Mobile Coverage

5G (outdoors only) and 4G LTE

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