4138 Mt Isabel Rd, Antioch, CA 94531 Property Records

Contra Costa County property record for 4138 Mt Isabel Rd, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 1,997 sqft · built 2001
Lot Size	0.145 acres (6,315 sqft)
Owner	Individual Name on File
Last Sale	$400,000 (Apr 2016)
Tax Bill	$5,827 (2025)
Deeds & Mortgages	Jan 2024 Mortgage Feb 2022 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`055-650-047-8`

Property Details

APN / Parcel Number

Primary APN	`055-650-047-8`
Alternative APN	`055-650-047`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,997 sqft Living Area
1st Floor Area	936 sqft
2nd Floor Area	1,061 sqft

Exterior

Year Built	Built 2001
Effective Year Built	Effective 2001
Lot Area	6,315 sqft (0.145 acres)
Garage Type	Attached
Garage Area	478 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	4138 MOUNT ISABEL RD
City	ANTIOCH
State	CA
Zip	94531-9106
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8410 L122
Legal Subdivision	SUBDIVISION 8410
Legal Tract	8410
Legal Lot Number	122
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	TASSAJARA
Census Block Group	1
Census Block	1005
Census Tract	355118

Owner

4138 Mt Isabel Rd is owned and occupied by an individual who acquired it in March 2018.

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

Owner of Record	Individual Name on File
Mailing Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106
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
Jan 16, 2024	Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC
Feb 18, 2022	Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC
Jan 21, 2021	Deed of Trust, Mortgage · Conventional Mortgage NATIONSTAR MORTGAGE LLC
Apr 23, 2018	Quit Claim Deed, Transfer · Conventional Mortgage MONEY SOURCE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Apr 1, 2016 · Amount on File
Deed Sale	Apr 1, 2016 · Amount on File
Prior Sale	Nov 21, 2001 · Amount on File
Deed Document Number	201658683
Last Transfer Date	Mar 1, 2018
Transfer Doc	0000062305
Record Updated	Oct 29, 2026

January 2024: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106
Transaction Type	Mortgage
Record Updated	Jan 25, 2024

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106

Mortgage

Document Number	0000004063
Date	Jan 16, 2024
Instrument	2024-004063

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Feb 1, 2054

February 2022: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106
Transaction Type	Mortgage
Record Updated	Nov 3, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106

Mortgage

Document Number	0000031148
Date	Feb 18, 2022
Instrument	2022-031148

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

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

January 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	TITLE365

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106

Mortgage

Document Number	0000019881
Date	Jan 21, 2021
Instrument	2021-019881

Lender

Name	NATIONSTAR MORTGAGE LLC
Type	Mortgage Company
Address	COPPELL, TX 75019

Agreement

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

April 2018: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 23, 2018
Property Address	4138 MOUNT ISABEL RD, ANTIOCH, CA 94531-9106
Document Number	0000062305
Instrument Date	Mar 1, 2018
Instrument	62305
Transaction Type	Transfer
Record Updated	May 1, 2018
Title Company	LAWYERS TITLE

Transaction

Tax	$0.00
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	4138 MOUNT ISABEL RD ANTIOCH CA 945319106, ANTIOCH, CA 94531-9106

Mortgage

Document Number	62306
Date	Apr 23, 2018
Instrument	62306

Lender

Name	MONEY SOURCE
Type	Funding / Finance Company
Address	MELVILLE, NY 11747

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	360 Months
Due	Apr 22, 2048

Tax Assessment & Valuation

The 2025 property tax bill for 4138 Mt Isabel Rd was $5,827 with a homeowner's exemption.

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		$503,790 (+2%) Land $152,357 Building $351,433
2025	$5,827.00 Homeowner's exemption	$493,913 Land $149,370 Building $344,543
2023	$5,488.00 (+1.57%) Homeowner's exemption	$474,736 Land $143,571 Building $331,165
2022	$5,403.00

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

Flood

FEMA maps place 4138 Mt Isabel Rd in Zone X, an area of minimal flood risk.

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

Wildfire risk around 4138 Mt Isabel Rd is low, with a 0.04% annual chance of wildfire.

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

Wildfire Risk	Low lower than 67% of the US · lower than 81% of California
Wildfire Likelihood	0.04% annual chance
Exposure	Indirect within 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 675 locations within half a mile, as of December 31, 2025

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

May also be available: Unwired.

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