2433 Grimsby Dr, Antioch, CA 94509 Property Records

Contra Costa County property record for 2433 Grimsby Dr, Antioch, CA 94509

Property Summary

Property Type	Single Family Home
Details	4 bd · 2.5 ba · 2,132 sqft · built 1980
Lot Size	0.391 acres (17,020 sqft)
Owner	Individual Name on File
Tax Bill	$2,809 (2025)
Deeds & Mortgages	Apr 2020 Reverse Mortgage
Flood Zone	Zone X (minimal risk)
APN	`075-311-009-7`

Property Details

APN / Parcel Number

Primary APN	`075-311-009-7`
Alternative APN	`075-311-009`

Interior

Bedrooms	4 Beds
Full Baths	2.5 Baths
Half Baths	1 Half Bath
Total Rooms	10 Rooms
Stories	2 Stories
Building Area	2,132 sqft Living Area
Gross Area	2,573 sqft
1st Floor Area	1,302 sqft
2nd Floor Area	830 sqft
Fireplaces	1 Fireplace
Fireplace	Fireplace

Exterior

Year Built	Built 1980
Effective Year Built	Effective 1981
Architectural Style	Ranch
Exterior Material	Stucco
Construction Type	Frame
Roof Material	Wood Shingle
Lot Area	17,020 sqft (0.391 acres)
Garage Type	Attached
Garage Area	441 sqft
Parking Spaces	2 Parking Spaces

Utilities, Heating & Cooling

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

Location & Zoning

Street Address	2433 GRIMSBY DR
City	ANTIOCH
State	CA
Zip	94509-5866
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	T05299 L0350 B EX 1/2 MR
Legal Subdivision	SUBDIVISION 5299
Legal Tract	05299
Legal Lot Number	350
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	TASSAJARA
Census Block Group	1
Census Block	1009
Census Tract	355107

Owner

2433 Grimsby Dr is owned and occupied by an individual who acquired it in March 2020.

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

Owner of Record	Individual Name on File
Mailing Address	2433 GRIMSBY DR, ANTIOCH, CA 94509-5866
Occupancy	Owner Occupied
Owner Type	Individual

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

Assessor's Deed Record

Deed Names	Name on Deed
Last Transfer Date	Mar 20, 2020
Transfer Doc	0000063775
Record Updated	Oct 29, 2026

April 2020: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Apr 2, 2020
Property Address	2433 GRIMSBY DR, ANTIOCH, CA 94509-5866
Document Number	0000063775
Map Reference	MB 222 PG 7
Instrument Date	Mar 20, 2020
Instrument	2020-063775
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	PLACER TITLE COMPANY

Transaction

Tax	$0.00
Amount Accuracy	Transfer Tax Exempt
Additional	Intrafamily Transfer

Transferred From (Grantor/Seller)

Name	Verified Name

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	2433 GRIMSBY DR, ANTIOCH, CA 94509-5866

Mortgage

Document Number	0000063777
Date	Apr 2, 2020
Instrument	2020-063777

Lender

Name	COMMISSIONER OF HOUSING AND URBAN DEVELO
Type	Government Agency
Address	WASHINGTON, DC 20410

Agreement

Type	Reverse Mortgage
Amount	Amount on Record
Term	856 Months
Due	Aug 8, 2091

Interest

Rate Type	Adjustable Rate
Rate	3.43%
Type Change Date	Apr 1, 2021
Index	1-Year LIBOR

Tax Assessment & Valuation

The 2025 property tax bill for 2433 Grimsby Dr was $2,809 with a homeowner's exemption.

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		$210,911 (+2%) Land $58,264 Building $152,647
2025	$2,809.00 Homeowner's exemption	$206,776 Land $57,122 Building $149,654
2023	$2,648.00 (+1.46%) Homeowner's exemption	$198,748 Land $54,904 Building $143,844
2022	$2,610.00

Assessed value is set for property tax purposes and is not a market price estimate.

Flood

FEMA maps place 2433 Grimsby Dr in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1983.

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
Nearby Flood Claims	1 (1983)
Most Recent Claim	Feb 1983 · Coastal Storms, Floods, Slides & Tornadoes

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

Wildfire risk around 2433 Grimsby Dr is high, ranking above 77% of the US, with a 0.5% annual chance of wildfire.

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

Wildfire Risk	High above 77% of the US · above 54% of California
Wildfire Likelihood	0.5% annual chance
Exposure	Indirect within ember reach
Adjoins Burnable Land	Yes

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 74 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250

May also be available: Verizon.

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