1. Home
  2. California
  3. Contra Costa County
  4. Antioch
  5. Observation Ct

1648 Observation Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 1648 Observation Ct, Antioch, CA 94531

Property Summary

Property TypeSingle Family Home
Details5 bd · 3 ba · 3,409 sqft · built 2002
Lot Size0.251 acres (10,922 sqft)
OwnerCompany Name on Record
Last Sale$350,000 (Mar 2012)
Tax Bill$5,406 (2025)
Deeds & MortgagesJun 2021 Mortgage
Feb 2020 Transfer
Flood ZoneZone X (minimal risk)
APN055-690-007-4

Property Details

APN / Parcel Number

Primary APN055-690-007-4
Alternative APN
  • 055-690-007

Interior

Bedrooms5 Beds
Full Baths3 Baths
Total Rooms12 Rooms
Stories2 Stories
Building Area3,409 sqft Living Area
1st Floor Area2,248 sqft
2nd Floor Area1,161 sqft

Exterior

Year BuiltBuilt 2002
Effective Year BuiltEffective 2002
Lot Area10,922 sqft (0.251 acres)
Garage TypeAttached
Garage Area635 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Cooling SystemCentral

Location & Zoning

Street Address1648 OBSERVATION CT
CityANTIOCH
StateCA
Zip94531-9132
Property CategoryResidential
Property TypeResidential > Single Family > Home
Legal DescriptionT8525 L1050
Legal SubdivisionBLACK DIAMOND KNOLLS XXIII MAP
Legal Tract8525
Legal Lot Number1050
JurisdictionCONTRA COSTA CA
Township / Civil DivisionTASSAJARA
Census Block Group2
Census Block2003
Census Tract355119

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 RecordCompany Name on Record
Mailing Address1648 OBSERVATION CT, ANTIOCH, CA 94531-9132
Owner TypeCompany
VestingTrust

Deeds, Mortgages & Sale History

DateDocument
Jun 16, 2021Deed of Trust, Mortgage · Conventional Mortgage
CHERRY CREEK MORTGAGE CO INC
Feb 19, 2020Quit Claim Deed, Transfer
ATTORNEY ONLY

Assessor's Deed Record

Deed NamesName on Deed
Last SaleMar 30, 2012 · Amount on Record
Deed SaleMar 30, 2012 · Amount on Record
Prior SaleJul 29, 2005 · Amount on Record
Deed Document Number201273450
Last Transfer DateFeb 12, 2020
Transfer Doc0000030862
Record UpdatedOct 29, 2026

June 2021: Deed of Trust, Mortgage

Document TypeDeed of Trust
JurisdictionCONTRA COSTA CA
Property Address1648 OBSERVATION CT, ANTIOCH, CA 94531-9132
Transaction TypeMortgage
Record UpdatedNov 3, 2022
Title CompanySERVICELINK

Transferred To (Grantee/Buyer)

NameVerified Name
Address1648 OBSERVATION CT, ANTIOCH, CA 94531-9132

Mortgage

Document Number0000174846
DateJun 16, 2021
Instrument2021-174846
Lender
NameCHERRY CREEK MORTGAGE CO INC
TypeMortgage Company
AddressENGLEWOOD, CO 80111
Agreement
TypeConventional Mortgage
AmountAmount Recorded
Term181 Months
DueJul 1, 2036

February 2020: Quit Claim Deed, Transfer

Document TypeQuit Claim Deed
JurisdictionCONTRA COSTA CA
Recording DateFeb 19, 2020
Property Address1648 OBSERVATION CT, ANTIOCH, CA 94531-9132
Document Number0000030862
Instrument DateFeb 12, 2020
Instrument30862
Transaction TypeTransfer
Record UpdatedMar 9, 2020
Title CompanyATTORNEY ONLY

Transaction

Tax$0.00
Additional
  • Quitclaim
  • Intrafamily Transfer

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipPersonal Trust
Address1648 OBSERVATION CT ANTIOCH CA 945319132, ANTIOCH, CA 94531-9132

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$448,397 (+2%) Land $56,365 Building $392,032
2025$5,406.00 (+6.08%)$439,606 (+4.04%) Land $55,260 Building $384,346
2023$5,096.00 (+1.51%)$422,537 Land $53,115 Building $369,422
2022$5,020.00

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 69% of California
Wildfire Likelihood0.1% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 611 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
AT&T
Fiber · DSL		5,000 / 5,000
Xfinity
Cable		2,000 / 250

May also be available: T-Mobile, Unwired.

Nearby Properties on Observation Ct

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

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