3521 Mountaire Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 3521 Mountaire Dr, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,522 sqft · built 1974
Lot Size	0.168 acres (7,316 sqft)
Owner	2 Individual Names on Record
Last Sale	$630,000 (Apr 2024)
Tax Bill	$7,680 (2025)
Deeds & Mortgages	Apr 2024 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`068-343-007-8`

Property Details

APN / Parcel Number

Primary APN	`068-343-007-8`
Alternative APN	`068-343-007`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	9 Rooms
Stories	1 Story
Building Area	1,522 sqft Living Area
Gross Area	1,982 sqft
1st Floor Area	1,522 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1974
Effective Year Built	Effective 1990
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	7,316 sqft (0.168 acres)
Garage Type	Attached
Garage Area	460 sqft
Parking Spaces	2 Parking Spaces
Deck Area	Deck Area

Utilities, Heating & Cooling

Cooling System	Central
Heating System	Forced Air with A/C
Sewer	Municipal
Water Source	Commercial

Location & Zoning

Street Address	3521 MOUNTAIRE DR
City	ANTIOCH
State	CA
Zip	94509-5665
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	T04335 L0045 B EX 1/2 MR
Legal Subdivision	SUBDIVISION 4335
Legal Tract	04335
Legal Lot Number	45
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	4
Census Block	4004
Census Tract	308001

Owner

Source: Contra Costa County records, as of August 17, 2026

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

Owner of Record	2 Individual Names on Record
Mailing Address	3521 MOUNTAIRE DR, ANTIOCH, CA 94509-5665
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Community Property

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 9, 2024 · Amount on Record
Deed Sale	Apr 9, 2024 · Amount on Record
Prior Sale	Aug 17, 2012 · Amount on Record
Deed Document Number	202432626
Prior Transfer Date	Apr 3, 2024
Prior Transfer Doc	0000032625
Record Updated	Sep 20, 2026

April 2024: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 9, 2024
Property Address	3521 MOUNTAIRE DR, ANTIOCH, CA 94509-5665
Document Number	0000032626
Map Reference	MB 156 PG 22
Instrument Date	Mar 27, 2024
Instrument	2024-032626
Transaction Type	Transfer
Record Updated	Apr 18, 2024
Title Company	CHICAGO TITLE COMPANY

Transaction

Amount	Amount Recorded
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
Relationship	Community Property with Right of Survivorship
Address	3521 MOUNTAIRE DR, ANTIOCH, CA 94509-5665

Mortgage

Document Number	0000032627
Date	Apr 9, 2024
Instrument	2024-032627

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company

Agreement

Type	FHA Mortgage
Amount	Amount Recorded
Term	361 Months
Due	May 1, 2054

Mortgage

Document Number	0000032628
Date	Apr 9, 2024
Instrument	2024-032628

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	CHICAGO, IL 60613

Agreement

Type	Stand-Alone Second Mortgage
Amount	Amount Recorded
Term	362 Months
Due	Jun 7, 2054

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		$655,452 (+2%) Land $208,080 Building $447,372
2025	$7,680.00 (+173.6%) Homeowner's exemption	$642,600 (+201.63%) Land $204,000 Building $438,600
2023	$2,807.00 (+1.48%) Homeowner's exemption	$213,039 Land $47,339 Building $165,700
2022	$2,766.00

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.

Nearby Properties on Mountaire Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures