5420 Spring Mountain Ln, Antioch, CA 94531 Property Records

Contra Costa County property record for 5420 Spring Mountain Ln, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	4 bd · 3.5 ba · 2,839 sqft · built 2022
Lot Size	0.106 acres (4,625 sqft)
Owner	2 Individual Names on File
Last Sale	$877,000 (Dec 2022)
Tax Bill	$13,397 (2025)
Deeds & Mortgages	Dec 2022 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`057-190-020-8`

Property Details

APN / Parcel Number

Primary APN	`057-190-020-8`
Alternative APN	`057-190-020`

Interior

Bedrooms	4 Beds
Full Baths	3.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,839 sqft Living Area
1st Floor Area	1,424 sqft
2nd Floor Area	1,415 sqft

Exterior

Year Built	Built 2022
Effective Year Built	Effective 2022
Lot Area	4,625 sqft (0.106 acres)
Garage Type	Attached
Garage Area	473 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	5420 SPRING MOUNTAIN LN
City	ANTIOCH
State	CA
Zip	94531-6234
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T9569 L20
Legal Subdivision	PROMENADE VINEYARDS/SAND CRK S
Legal Tract	9569
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	2
Census Block	2011
Census Tract	303207

Owner

5420 Spring Mountain Ln is owned and occupied by two individuals who bought it in December 2022.

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

Owner of Record	2 Individual Names on File
Mailing Address	5420 SPRING MOUNTAIN LN, ANTIOCH, CA 94531-6234
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Dec 16, 2022 · Amount on File
Deed Sale	Dec 16, 2022 · Amount on File
Deed Document Number	2022185288
Record Updated	Sep 20, 2026

December 2022: Grant Deed, Subdivision Related Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 16, 2022
Property Address	5420 SPRING MOUNTAIN LN, ANTIOCH, CA 94531-6234
Document Number	0000185288
Map Reference	MB 549 PG 44-51
Instrument Date	Nov 21, 2022
Instrument	2022-185288
Transaction Type	Subdivision Related Transfer
Record Updated	Aug 1, 2023
Title Company	FIRST AMERICAN TITLE COMPANY HOMEBU, FIRST AMER TTL CO HOMEBUILDE

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$964.70
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	5420 SPRING MOUNTAIN LANE, ANTIOCH, CA 94531-6234

Mortgage

Document Number	0000185289
Date	Dec 16, 2022
Instrument	2022-185289

Lender

Name	LOANDEPOT.COM LLC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Jan 1, 2053

Tax Assessment & Valuation

The 2025 property tax bill for 5420 Spring Mountain Ln was $13,397 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
Elementary School District	Brentwood Union Elementary School District (KG - 08)
Secondary School District	Liberty Union High School District (09 - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$904,891 (+2%) Land $265,302 Building $639,589
2025	$13,397.00 Homeowner's exemption	$887,149 Land $260,100 Building $627,049
2023	$13,243.00 (+443.19%)	$876,900 Land $250,000 Building $626,900
2022	$2,438.00

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

Flood

FEMA maps place 5420 Spring Mountain Ln in Zone X, an area of minimal flood risk, within 500 ft of a high-risk flood zone.

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
Nearest Special Flood Hazard Area	Zone A, within 500 ft
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 5420 Spring Mountain Ln is moderate, ranking above 61% of the US, with a 0.2% annual chance of wildfire.

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

Wildfire Risk	Moderate above 61% of the US · lower than 63% of California
Wildfire Likelihood	0.2% 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 782 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
Unwired Fixed Wireless	300 / 25
Verizon Fixed Wireless	300 / 20