4010 Boulder Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 4010 Boulder Dr, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	3 bd · 2 ba · 1,584 sqft · built 1966
Lot Size	0.16 acres (6,968 sqft)
Owner	Individual Name on File
Last Sale	$590,000 (Nov 2025)
Tax Bill	$1,416 (2025)
Deeds & Mortgages	Nov 2025 Mortgage Nov 2025 Sale & Mortgage
Flood Zone	Zone X (minimal risk)
APN	`072-026-009`

Property Details

APN / Parcel Number

Primary APN	`072-026-009`
Alternative APN	`072-026-009-0`

Interior

Bedrooms	3 Beds
Full Baths	2 Baths
Total Rooms	7 Rooms
Stories	1 Story
Building Area	1,584 sqft Living Area
1st Floor Area	1,584 sqft

Exterior

Year Built	Built 1966
Effective Year Built	Effective 1967
Lot Area	6,968 sqft (0.16 acres)
Garage Type	Attached
Garage Area	437 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	4010 BOULDER DR
City	ANTIOCH
State	CA
Zip	94509-6233
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	TRACT 3435 LOT 25 EX MR
Legal Subdivision	SUBDIVISION 3435
Legal Tract	3435
Legal Lot Number	25
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	ANTIOCH-PITTSBURG
Census Block Group	1
Census Block	1008
Census Tract	355109

Owner

4010 Boulder Dr is owned and occupied by an individual who bought it in November 2025.

Source: Contra Costa County records, as of August 21, 2026

Owner of Record	Individual Name on File
Mailing Address	4010 BOULDER DR, ANTIOCH, CA 94509-6233
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Sole Owner

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

Date	Document
Nov 13, 2025	Intrafamily Transfer, Transfer · Conventional Mortgage GUARANTEED RATE INC
Nov 13, 2025	Grant Deed, Subdivision Related Transfer · Conventional Mortgage GUARANTEED RATE INC

Assessor's Deed Record

Deed Names	Name on Deed
Last Sale	Nov 13, 2025 · Amount on File
Deed Sale	Nov 13, 2025 · Amount on File
Prior Sale	Feb 19, 2025 · Amount on File
Deed Document Number	2025127738
Prior Transfer Date	Nov 7, 2025
Prior Transfer Doc	0000127737
Record Updated	Oct 29, 2026

November 2025: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Nov 13, 2025
Property Address	4010 BOULDER DR, ANTIOCH, CA 94509-6233
Document Number	0000127737
Map Reference	MB 108 PG 23
Instrument Date	Nov 7, 2025
Instrument	2025- 127737
Transaction Type	Transfer
Record Updated	Nov 26, 2025
Title Company	USA NATIONAL TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	No Consideration Stated
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Separate Estate/Property
Address	4010 BOULDER DR, ANTIOCH, CA 94509-6233

Mortgage

Document Number	0000127740
Date	Nov 13, 2025
Instrument	2025- 127740

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company
Address	3940 N RAVENSWOOD AVE, CHICAGO, IL 60613

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	362 Months
Due	Jan 6, 2056

November 2025: Grant Deed, Subdivision Related Transfer

Document Type	Grant Deed
Jurisdiction	CONTRA COSTA CA
Recording Date	Nov 13, 2025
Property Address	4010 BOULDER DR, ANTIOCH, CA 94509-6233
Document Number	0000127738
Map Reference	MB 108 PG 23
Instrument Date	Nov 5, 2025
Instrument	2025- 127738
Transaction Type	Subdivision Related Transfer
Record Updated	Nov 27, 2025
Title Company	USA NATIONAL TITLE COMPANY

Transaction

Amount	Amount on Record
Downpayment	Downpayment on Record
Loan-to-Value (LTV)	LTV on Record
Tax	$0.00
Amount Accuracy	Rounded by County
Additional	Notice of Trustee Sale Arm's Length

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants
Address	4010 BOULDER DR, ANTIOCH, CA 94509-6233

Mortgage

Document Number	0000127739
Date	Nov 13, 2025
Instrument	2025- 127739

Lender

Name	GUARANTEED RATE INC
Type	Mortgage Company

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	361 Months
Due	Dec 1, 2055

Tax Assessment & Valuation

The 2025 property tax bill for 4010 Boulder Dr was $1,416.

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		$590,000 (+619.03%) Land $190,000 Building $400,000
2025	$1,416.00 Homeowner's exemption	$82,055 Land $25,698 Building $56,357
2023	$1,313.00 (+1.23%) Homeowner's exemption	$78,870 Land $24,701 Building $54,169
2022	$1,297.00

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

FEMA maps place 4010 Boulder Dr in Zone X, an area of minimal flood risk.

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

Wildfire risk around 4010 Boulder Dr is low, with a 0.01% annual chance of 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.

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