228 Boulder Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 228 Boulder Dr, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,690 sqft · built 1969
Lot Size	0.179 acres (7,800 sqft)
Owner	2 Individual Names on Record
Last Sale	$430,000 (Feb 2020)
Tax Bill	$5,833 (2025)
Deeds & Mortgages	Nov 2021 Mortgage Feb 2020 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`072-042-005-8`

Property Details

APN / Parcel Number

Primary APN	`072-042-005-8`
Alternative APN	`072-042-005`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,690 sqft Living Area
Gross Area	2,127 sqft
1st Floor Area	1,690 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1969
Effective Year Built	Effective 1970
Exterior Material	Stucco
Construction Type	Concrete
Roof Material	Composition Shingle
Lot Area	7,800 sqft (0.179 acres)
Garage Type	Attached
Garage Area	437 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Street Address	228 BOULDER DR
City	ANTIOCH
State	CA
Zip	94509-6206
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 3596 LOT 56 EX MR
Legal Subdivision	SUBDIVISION 3596
Legal Tract	3596
Legal Lot Number	56
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	1
Census Block	1004
Census Tract	355109

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	2 Individual Names on Record
Mailing Address	228 BOULDER DR, ANTIOCH, CA 94509-6206
Occupancy	Owner Occupied
Owner Type	Individual

Deeds, Mortgages & Sale History

Date	Document
Nov 15, 2021	Deed of Trust, Mortgage · Conventional Mortgage MASON MCDUFFIE MORTGAGE CORP
Feb 12, 2020	Grant Deed, Transfer · Conventional Mortgage MASON MCDUFFIE MORTGAGE CORP

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Feb 12, 2020 · Amount on Record
Deed Sale	Feb 12, 2020 · Amount on Record
Prior Sale	Aug 29, 2013 · Amount on Record
Deed Document Number	202027048
Prior Transfer Date	Jan 30, 2015
Prior Transfer Doc	0000193408
Record Updated	Sep 20, 2026

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	228 BOULDER DR, ANTIOCH, CA 94509-6206
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	WFG NATIONAL TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	228 BOULDER DR, ANTIOCH, CA 94509-6206

Mortgage

Document Number	0000315864
Date	Nov 15, 2021
Instrument	2021-315864

Lender

Name	MASON MCDUFFIE MORTGAGE CORP
Type	Mortgage Company
Address	SAN RAMON, CA 94583

Agreement

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

February 2020: Grant Deed, Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Feb 12, 2020
Property Address	228 BOULDER DR, ANTIOCH, CA 94509-6206
Document Number	0000027048
Map Reference	MB 112 PG 27
Instrument Date	Feb 10, 2020
Instrument	2020-027048
Transaction Type	Transfer
Record Updated	Jul 27, 2021
Title Company	OLD REPUBLIC 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	Joint Tenants
Address	228 BOULDER DR, ANTIOCH, CA 94509-6206

Mortgage

Document Number	0000027049
Date	Feb 12, 2020
Instrument	2020-027049

Lender

Name	MASON MCDUFFIE MORTGAGE CORP
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Mar 1, 2050

Mortgage

Document Number	0000027050
Date	Feb 12, 2020
Instrument	2020-027050

Lender

Name	GOLDEN STATE FINANCE AUTHORITY
Type	Government Agency
Address	SACRAMENTO, CA 95814

Agreement

Type	Commercial Mortgage
Amount	Amount Recorded

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		$479,668 (+2%) Land $217,524 Building $262,144
2025	$5,833.00 (+5.1%)	$470,263 (+4.04%) Land $213,259 Building $257,004
2023	$5,550.00 (+1.59%)	$452,004 Land $204,979 Building $247,025
2022	$5,463.00

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

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 645 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 Boulder Dr

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

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