1640 Observation Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 1640 Observation Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	4 bd · 3 ba · 3,527 sqft · built 2002
Lot Size	0.269 acres (11,705 sqft)
Owner	2 Individual Names on Record
Last Sale	$615,000 (Mar 2019)
Tax Bill	$7,994 (2025)
Deeds & Mortgages	Mar 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`055-690-008-2`

Property Details

APN / Parcel Number

Primary APN	`055-690-008-2`
Alternative APN	`055-690-008`

Interior

Bedrooms	4 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	3,527 sqft Living Area
1st Floor Area	1,727 sqft
2nd Floor Area	1,800 sqft

Exterior

Year Built	Built 2002
Effective Year Built	Effective 2002
Lot Area	11,705 sqft (0.269 acres)
Garage Type	Attached
Garage Area	648 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	1640 OBSERVATION CT
City	ANTIOCH
State	CA
Zip	94531-9132
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8525 L1051
Legal Subdivision	SUBDIVISION 8525
Legal Tract	8525
Legal Lot Number	1051
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	TASSAJARA
Census Block Group	2
Census Block	2003
Census Tract	355119

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 Record	2 Individual Names on Record
Mailing Address	1640 OBSERVATION CT, ANTIOCH, CA 94531-9132
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Mar 5, 2019 · Amount on Record
Deed Sale	Mar 5, 2019 · Amount on Record
Prior Sale	Jun 13, 2013 · Amount on Record
Deed Document Number	201929767
Prior Transfer Date	Jul 6, 2010
Prior Transfer Doc	0000139617
Record Updated	Oct 29, 2026

March 2019: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 5, 2019
Property Address	1640 OBSERVATION CT, ANTIOCH, CA 94531-9132
Document Number	0000029767
Map Reference	MB 434 PG 10
Instrument Date	Feb 26, 2019
Instrument	2019-029767
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	CHICAGO TITLE

Transaction

Amount	Amount Recorded
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	1640 OBSERVATION CT, ANTIOCH, CA 94531-9132

Mortgage

Document Number	0000029768
Date	Mar 5, 2019
Instrument	2019-029768

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Apr 1, 2049

Tax Assessment & Valuation

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

Type	Name
State	California
County	Contra Costa County
Municipality	Antioch City
Unified School District	Antioch Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$699,758 (+2%) Land $187,738 Building $512,020
2025	$7,994.00 (+5.92%)	$686,038 (+4.04%) Land $184,057 Building $501,981
2023	$7,547.00 (+1.59%)	$659,401 Land $176,911 Building $482,490
2022	$7,429.00

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 Zone	Zone X minimal risk
Flood Insurance Requirement	Not 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 Risk	Moderate above 51% of the US · lower than 69% of California
Wildfire Likelihood	0.1% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 System	CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001
Water Source	Surface water
Last State Inspection	Jan 2024
Lead	Under 1 ppb (2022–2024) action level 15 ppb

Violations Reported to EPA

Water Quality	None last 10 years
Treatment and Procedure	None last 10 years
Monitoring and Reporting	None 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

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

May also be available: T-Mobile, Unwired.

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