320 Grissom St, Hercules, CA 94547 Property Records

Contra Costa County property record for 320 Grissom St, Hercules, CA 94547

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,519 sqft · built 1989
Lot Size	0.161 acres (7,000 sqft)
Owner	2 Individual Names on Record
Tax Bill	$8,069 (2025)
Deeds & Mortgages	Jan 2018 Line of Credit Sep 2017 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`362-363-003-9`

Property Details

APN / Parcel Number

Primary APN	`362-363-003-9`
Alternative APN	`362-363-003`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	2,519 sqft Living Area
1st Floor Area	1,416 sqft
2nd Floor Area	1,103 sqft

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Lot Area	7,000 sqft (0.161 acres)
Garage Type	Attached
Garage Area	708 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	320 GRISSOM ST
City	HERCULES
State	CA
Zip	94547-2008
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T6722 L33
Legal Subdivision	SUBDIVISION 6722
Legal Tract	6722
Legal Lot Number	33
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	BRIONES
Census Block Group	2
Census Block	2000
Census Tract	356002

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	320 GRISSOM ST, HERCULES, CA 94547-2008
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

Deeds, Mortgages & Sale History

Date	Document
Jan 29, 2018	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA
Sep 14, 2017	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA
Sep 11, 2019	Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA
Nov 8, 2021	Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC

Assessor's Deed Record

Deed Names	2 Names on Deed
Record Updated	Sep 20, 2026

January 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	320 GRISSOM ST, HERCULES, CA 94547-2008
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMERICAN TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000013398
Date	Jan 29, 2018
Instrument	2018-013398

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	361 Months
Due	Feb 19, 2048

September 2017: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	320 GRISSOM ST, HERCULES, CA 94547-2008
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMERICAN TITLE INC

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000168085
Date	Sep 14, 2017
Instrument	2017-168085

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2047

September 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	320 GRISSOM ST, HERCULES, CA 94547-2008
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000149457
Date	Sep 11, 2019
Instrument	2019-149457

Lender

Name	WELLS FARGO BANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	361 Months
Due	Oct 1, 2049

November 2021: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	320 GRISSOM ST, HERCULES, CA 94547-2008
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	AMERICAN COAST TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	320 GRISSOM ST, HERCULES, CA 94547-2008

Mortgage

Document Number	0000310611
Date	Nov 8, 2021
Instrument	2021-310611

Lender

Name	LOANDEPOT.COM LLC
Type	Mortgage Company
Address	FOOTHILL RANCH, CA 92610

Agreement

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

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	Hercules City
Unified School District	West Contra Costa Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$500,796 (+2%) Land $137,797 Building $362,999
2025	$8,069.00 (+6.16%) Homeowner's exemption	$490,978 (+4.04%) Land $135,096 Building $355,882
2023	$7,601.00 (+1.2%) Homeowner's exemption	$471,914 Land $129,851 Building $342,063
2022	$7,511.00

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 · 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 Policies	1 in force
Nearby Flood Claims	7 (1993–2017)
Claims Outside the SFHA	2 of 7
Most Recent Claim	Feb 2017 · Severe Winter Storms, Flooding, And Mudslides

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

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	0.6% annual chance
Exposure	Direct burnable vegetation

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	EAST BAY MUD serves 1,468,000 people · EPA ID CA0110005
Water Source	Surface water
Last State Inspection	Dec 2021
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. This system sells water to local utilities; the supplier billing this address may be one of them.

Internet Providers

Source: FCC Broadband Data Collection, based on 216 locations within half a mile, as of December 31, 2025

Provider	Max Down / Up (Mbps)
Xfinity Cable	2,000 / 250
Verizon Fixed Wireless	300 / 20
T-Mobile Fixed Wireless	100 / 20

May also be available: Unwired.

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