3620 Mountaire Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 3620 Mountaire Dr, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	4 bd · 2 ba · 1,510 sqft · built 1973
Lot Size	0.149 acres (6,468 sqft)
Owner	Company Name on Record
Last Sale	$400,500 (Oct 2026)
Tax Bill	$1,425 (2025)
Deeds & Mortgages	Oct 2026 Sale Oct 2026 Construction Loan + 3 more
Flood Zone	Zone X (minimal risk)
APN	`068-333-002-1`

Property Details

APN / Parcel Number

Primary APN	`068-333-002-1`
Alternative APN	`068-333-002`

Interior

Bedrooms	4 Beds
Full Baths	2 Baths
Total Rooms	8 Rooms
Stories	1 Story
Building Area	1,510 sqft Living Area
1st Floor Area	1,510 sqft

Exterior

Year Built	Built 1973
Effective Year Built	Effective 1973
Lot Area	6,468 sqft (0.149 acres)
Garage Type	Attached
Garage Area	437 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	3620 MOUNTAIRE DR
City	ANTIOCH
State	CA
Zip	94509-5668
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 4335 LOT 24 EX 1/2 MR
Legal Subdivision	SUBDIVISION 4335
Legal Tract	4335
Legal Lot Number	24
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	4
Census Block	4003
Census Tract	308001

Owner

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

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Company Name on Record
Mailing Address	3278 VALLEY BROOK WAY, FAIRVIEW, CA 94541-3402
Owner Type	Company
Vesting	Limited Liability Partnership

Deeds, Mortgages & Sale History

Date	Document
Oct 6, 2026	Grant Deed, Transfer WFG NATIONAL TITLE INSURANCE, WFG NATIONAL TITLE INSURANCE C
Oct 6, 2026	Correction Deed · Construction Mortgage KIAVI FUNDING INC
Dec 7, 2023	Affidavit of Death of Joint Tenant, Transfer
Mar 14, 2019	Affidavit of Death, Transfer NOT AVAILABLE
Mar 14, 2019	Quit Claim Deed, Transfer NOT AVAILABLE

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Oct 6, 2026 · Amount on Record
Deed Sale	Oct 6, 2026 · Amount on Record
Deed Document Number	2026105507
Prior Transfer Date	Feb 15, 2019
Prior Transfer Doc	0000034880
Record Updated	Oct 29, 2026

October 2026: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 6, 2026
Property Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668
Document Number	0000105507
Instrument Date	Sep 18, 2026
Instrument	2026105507
Transaction Type	Transfer
Record Updated	Oct 13, 2026
Title Company	WFG NATIONAL TITLE INSURANCE, WFG NATIONAL TITLE INSURANCE C

Transaction

Amount	Amount Recorded
Tax	$44,495.55
Amount Accuracy	Full Amount Stated
Additional	Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Limited Liability Partnership

October 2026: Correction Deed

Document Type	Correction Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Oct 6, 2026
Property Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668
Document Number	0000105687
Instrument Date	Sep 18, 2026
Instrument	2026105687
Record Updated	Oct 13, 2026
Title Company	WFG NATIONAL TITLE INSURANCE, WFG NATIONAL TITLE INSURANCE C

Transaction

Tax	$0.00
Amount Accuracy	Full Amount Stated

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Limited Liability Partnership

Mortgage

Document Number	0000105508,
Date	Oct 6, 2026
Instrument	2026105508

Lender

Name	KIAVI FUNDING INC

Agreement

Type	Construction Mortgage
Amount	Amount Recorded
Term	360 Months

Interest

Max Rate	-1%

December 2023: Affidavit of Death of Joint Tenant, Transfer

Document Type	Affidavit of Death of Joint Tenant
Jurisdiction	CONTRA COSTA CA
Recording Date	Dec 7, 2023
Property Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668
Document Number	0000130170
Map Reference	MB 156 PG 22
Instrument Date	Dec 4, 2023
Instrument	2023-130170
Transaction Type	Transfer
Record Updated	Dec 19, 2023

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Notice of Trustee Sale Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668

March 2019: Affidavit of Death, Transfer

Document Type	Affidavit of Death
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 14, 2019
Property Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668
Document Number	0000034880
Instrument Date	Feb 19, 2019
Instrument	34880
Transaction Type	Transfer
Record Updated	Apr 9, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	3620 MOUNTAIRE DR ANTIOCH CA 945095668, ANTIOCH, CA 94509-5668

March 2019: Quit Claim Deed, Transfer

Document Type	Quit Claim Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Mar 14, 2019
Property Address	3620 MOUNTAIRE DR, ANTIOCH, CA 94509-5668
Document Number	0000034881
Instrument Date	Feb 12, 2019
Instrument	34881
Transaction Type	Transfer
Record Updated	Apr 9, 2019
Title Company	NOT AVAILABLE

Transaction

Tax	$0.00
Amount Accuracy	Full Value
Additional	Quitclaim Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	3620 MOUNTAIRE DR ANTIOCH CA 945095668, ANTIOCH, CA 94509-5668

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		$77,441 (+2%) Land $27,463 Building $49,978
2025	$1,425.00 (+14.27%)	$75,924 (+4.04%) Land $26,925 Building $48,999
2023	$1,247.00 (-4.88%)	$72,979 Land $25,881 Building $47,098
2022	$1,311.00

Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.

Flood

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

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

Wildfire Risk	Low lower than 80% of the US · lower than 88% of California
Wildfire Likelihood	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 489 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
AT&T DSL	100 / 20

May also be available: Verizon.

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