4501 Half Dome St, Antioch, CA 94531 Property Records

Contra Costa County property record for 4501 Half Dome St, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 3,231 sqft · built 2013
Lot Size	0.143 acres (6,220 sqft)
Owner	Individual Name on File
Last Sale	$500,000 (Apr 2014)
Tax Bill	$7,640 (2025)
Deeds & Mortgages	Apr 2022 Mortgage Sep 2022 Line of Credit + 3 more
Flood Zone	Zone X (minimal risk)
APN	`052-540-023`

Property Details

APN / Parcel Number

Primary APN	`052-540-023`
Alternative APN	`052-540-023-0`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	3,231 sqft Living Area
1st Floor Area	1,586 sqft
2nd Floor Area	1,645 sqft

Exterior

Year Built	Built 2013
Effective Year Built	Effective 2014
Lot Area	6,220 sqft (0.143 acres)
Garage Type	Attached
Garage Area	670 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4501 HALF DOME ST
City	ANTIOCH
State	CA
Zip	94531-7189
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8851 L270
Legal Subdivision	NELSON RANCH 3 SUB 8851
Legal Tract	8851
Legal Lot Number	270
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	1
Census Block	1017
Census Tract	308002

Owner

4501 Half Dome St is owned and occupied by an individual who acquired it in May 2021.

Source: Contra Costa County records, as of July 14, 2026

Owner of Record	Individual Name on File
Mailing Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Occupancy	Owner Occupied
Owner Type	Individual

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

Deeds, Mortgages & Sale History

Date	Document
Apr 29, 2022	Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC
Sep 1, 2022	Deed of Trust, Mortgage · Line of Credit PATELCO CU
Jun 28, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage LOANDEPOT.COM LLC
Aug 3, 2020	Deed of Trust, Mortgage · Conventional Mortgage WILMINGTON TR NA
Jan 26, 2018	Intrafamily Transfer, Transfer · Line of Credit PATELCO CU

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 29, 2014 · Amount on File
Deed Sale	Apr 29, 2014 · Amount on File
Deed Document Number	201466164
Last Transfer Date	May 19, 2021
Transfer Doc	0000184192
Record Updated	Sep 20, 2026

April 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMERICAN COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189

Mortgage

Document Number	0000074901
Date	Apr 29, 2022
Instrument	2022-074901

Lender

Name	LOANDEPOT.COM LLC
Type	Mortgage Company
Address	FOOTHILL RANCH, CA 92610

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	May 1, 2052

Interest

Rate Type	Adjustable Rate
Rate	3.5%
Type Change Date	May 1, 2029
Change Frequency	6 Months
Min Rate At Change	2.75%
Max Rate At Change	8.5%
Index	Other
Max Rate	8.5%

September 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	ACCOMMODATION

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189

Mortgage

Document Number	0000134987
Date	Sep 1, 2022
Instrument	2022-134987

Lender

Name	PATELCO CU
Type	Credit Union
Address	DUBLIN, CA 94568

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	301 Months
Due	Sep 30, 2047

Interest

Rate Type	Adjustable Rate
Rate	6.25%
Change Frequency	Monthly
Index	Prime Rate
Max Rate	17%

June 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 28, 2021
Property Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Document Number	0000184192
Map Reference	MB 501 PG 20
Instrument Date	May 19, 2021
Instrument	2021-184192
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	AMERICAN SW TITLE, AMERICAN COAST TITLE

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189

Mortgage

Document Number	0000184193
Date	Jun 28, 2021
Instrument	2021-184193

Lender

Name	LOANDEPOT.COM LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jul 1, 2051

August 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Document Number	0000165032
Instrument Date	Aug 3, 2020
Transaction Type	Mortgage
Record Updated	Aug 26, 2020
Title Company	NOT AVAILABLE

Transaction

Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Company
Address	90 MATAWAN RD #5TH MATAWAN NJ 077472623, 5TH, MATAWAN, NJ 07747-2623
Investor	Possibly a Property Investor

Mortgage

Document Number	0000165032
Date	Aug 7, 2020
Instrument	165032

Lender

Name	WILMINGTON TR NA
Address	WILMINGTON, DE 19890-1600

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	60 Months
Due	Aug 6, 2025

January 2018: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Jan 26, 2018
Property Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189
Document Number	0000012572
Map Reference	MB 501 PG 20
Instrument Date	Jan 18, 2018
Instrument	2018-012572
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	ACCOMMODATION

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4501 HALF DOME ST, ANTIOCH, CA 94531-7189

Mortgage

Document Number	0000012573
Date	Jan 26, 2018
Instrument	2018-012573

Lender

Name	PATELCO CU
Type	Credit Union

Agreement

Type	Line of Credit
Amount	Amount on Record
Term	302 Months
Due	Feb 28, 2043

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

Tax Assessment & Valuation

The 2025 property tax bill for 4501 Half Dome St was $7,640.

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		$625,054 (+2%) Land $137,536 Building $487,518
2025	$7,640.00	$612,799 Land $134,840 Building $477,959
2023	$7,291.00 (+1.59%)	$589,005 Land $129,605 Building $459,400
2022	$7,177.00

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

Flood

FEMA maps place 4501 Half Dome St in Zone X, an area of minimal flood risk.

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	2 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

Wildfire risk around 4501 Half Dome St is low, with less than a 0.01% annual chance of wildfire.

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

Wildfire Risk	Low lower than 99.8% of the US · lower than 99.8% of California
Wildfire Likelihood	Under 0.01% annual chance
Exposure	None beyond ember reach

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

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: AT&T.

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