5551 Mountain Ridge Ct, Antioch, CA 94531 Property Records

Contra Costa County property record for 5551 Mountain Ridge Ct, Antioch, CA 94531

Property Summary

Property Type	Single Family Home
Details	5 bd · 4 ba · 3,529 sqft · built 2018
Lot Size	0.1 acres (4,360 sqft)
Owner	Individual Name on Record
Last Sale	$693,500 (May 2019)
Tax Bill	$11,941 (2025)
Deeds & Mortgages	Feb 2021 Mortgage May 2019 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`053-790-002-9`

Property Details

APN / Parcel Number

Primary APN	`053-790-002-9`
Alternative APN	`053-790-002`

Interior

Bedrooms	5 Beds
Full Baths	4 Baths
Total Rooms	12 Rooms
Stories	2 Stories
Building Area	3,529 sqft Living Area
1st Floor Area	1,850 sqft
2nd Floor Area	1,679 sqft

Exterior

Year Built	Built 2018
Effective Year Built	Effective 2019
Lot Area	4,360 sqft (0.1 acres)
Garage Type	Attached
Garage Area	444 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

Cooling System	Central

Location & Zoning

Street Address	5551 MOUNTAIN RIDGE CT
City	ANTIOCH
State	CA
Zip	94531-8699
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T8846 L25
Legal Subdivision	PARK RDG 1 SUB 8846
Legal Tract	8846
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	EAST CONTRA COSTA
Census Block Group	4
Census Block	4005
Census Tract	302009

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	Individual Name on Record
Mailing Address	5551 MOUNTAIN RIDGE CT, ANTIOCH, CA 94531-8699
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Feb 18, 2021	Deed of Trust, Mortgage · Conventional Mortgage CMG MORTGAGE INC
May 30, 2019	Grant Deed, Subdivision Related Transfer · ARM CMG MORTGAGE INC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	May 30, 2019 · Amount on Record
Deed Sale	May 30, 2019 · Amount on Record
Deed Document Number	201979265
Record Updated	Sep 20, 2026

February 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	5551 MOUNTAIN RIDGE CT, ANTIOCH, CA 94531-8699
Transaction Type	Mortgage
Record Updated	Aug 1, 2023
Title Company	E-CHICAGO TITLE, CHICAGO TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	5551 MOUNTAIN RIDGE CT, ANTIOCH, CA 94531-8699

Mortgage

Document Number	0000049674
Date	Feb 18, 2021
Instrument	2021-049674

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company
Address	SAN RAMON, CA 94583

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2051

May 2019: Grant Deed, Subdivision Related Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	May 30, 2019
Property Address	5551 MOUNTAIN RIDGE CT, ANTIOCH, CA 94531-8699
Document Number	0000079265
Map Reference	MB 51 PG 37
Instrument Date	Apr 30, 2019
Instrument	2019-079265
Transaction Type	Subdivision Related Transfer
Record Updated	Nov 3, 2022
Title Company	FIRST AMERICAN TITLE COMPANY

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
Address	5551 MOUNTAIN RIDGE CT, ANTIOCH, CA 94531-8699

Mortgage

Document Number	0000079266
Date	May 30, 2019
Instrument	2019-079266

Lender

Name	CMG MORTGAGE INC
Type	Mortgage Company

Agreement

Type	ARM
Amount	Amount Recorded
Term	361 Months
Due	Jun 1, 2049

Interest

Rate Type	Adjustable Rate
Rate	4.12%
Type Change Date	Jun 1, 2029
Change Frequency	Annually
Min Rate At Change	2.25%
Max Rate At Change	9.12%
Index	1-Year LIBOR
Max Rate	9.12%

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		$789,079 (+2%) Land $159,294 Building $629,785
2025	$11,941.00 (+5.66%)	$773,608 (+4.04%) Land $156,171 Building $617,437
2023	$11,301.00 (+27.25%)	$743,569 Land $150,107 Building $593,462
2022	$8,881.00

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
Community Rating System	Class 6 (20% premium discount)
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

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

Wildfire Risk	Low lower than 97% of the US · lower than 97.8% 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 286 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
Unwired Fixed Wireless	300 / 25

May also be available: T-Mobile, Verizon.

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