5203 Ramsdell Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 5203 Ramsdell Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 4,239 sqft · built 2001
Lot Size	0.237 acres (10,320 sqft)
Owner	2 Individual Names on File
Last Sale	$496,500 (May 2002)
Tax Bill	$12,785 (2025)
Flood Zone	Zone X (minimal risk)
APN	`075-580-015-8`

Property Details

APN / Parcel Number

Primary APN	`075-580-015-8`
Alternative APN	`075-580-015`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	13 Rooms
Stories	2 Stories
Building Area	4,239 sqft Living Area
1st Floor Area	2,590 sqft
2nd Floor Area	1,649 sqft

Exterior

Year Built	Built 2001
Effective Year Built	Effective 2002
Lot Area	10,320 sqft (0.237 acres)
Garage Type	Attached
Garage Area	625 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	5203 RAMSDELL CT
City	ANTIOCH
State	CA
Zip	94531-9119
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8320 L436
Legal Tract	8320
Legal Lot Number	436
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	TASSAJARA
Census Block Group	2
Census Block	2005
Census Tract	355118

Owner

Source: Contra Costa County assessment roll, 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 File
Mailing Address	5203 RAMSDELL CT, ANTIOCH, CA 94531-9119
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Verified Names on Deed
Last Sale	May 8, 2002 · Amount on Record
Deed Sale	May 8, 2002 · Amount on Record
Deed Document Number	2002162358
Last Transfer Date	Dec 14, 2012
Transfer Doc	0000326172
Record Updated	Sep 20, 2026

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		$766,962 (+2%) Land $165,740 Building $601,222
2025	$12,785.00 (+3.93%)	$751,925 (+4.04%) Land $162,491 Building $589,434
2023	$12,302.00 (+1.15%)	$722,729 Land $156,182 Building $566,547
2022	$12,162.00

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 · OpenFEMA NFIP redacted claims and policies, as of September 2026

FEMA Flood Zone	Zone X minimal risk
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

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.

Wildfire

Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024

Wildfire Risk	High above 79% of the US · above 56% of California
Wildfire Likelihood	0.6% annual chance
Exposure	Indirect within ember reach

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

Provider	Max Down / Up (Mbps)
AT&T Fiber	5,000 / 5,000
Xfinity Cable	2,000 / 250
T-Mobile USA Fixed Wireless	100 / 20