263 Grissom St, Hercules, CA 94547 Property Records

Contra Costa County property record for 263 Grissom St, Hercules, CA 94547

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,598 sqft · built 1989
Lot Size	0.161 acres (7,000 sqft)
Owner	2 Company Names on Record
Tax Bill	$8,005 (2025)
Deeds & Mortgages	Sep 2018 Line of Credit Nov 2021 Mortgage + 2 more
Flood Zone	Zone X (minimal risk)
APN	`362-361-010-6`

Property Details

APN / Parcel Number

Primary APN	`362-361-010-6`
Alternative APN	`362-361-010`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	11 Rooms
Stories	2 Stories
Building Area	2,598 sqft Living Area
1st Floor Area	1,455 sqft
2nd Floor Area	1,143 sqft

Exterior

Year Built	Built 1989
Effective Year Built	Effective 1989
Lot Area	7,000 sqft (0.161 acres)
Garage Type	Attached
Garage Area	709 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	263 GRISSOM ST
City	HERCULES
State	CA
Zip	94547-1048
Property Category	Residential
Property Type	Residential > Single Family > Home
Legal Description	T6722 L10
Legal Subdivision	SUBDIVISION 6722
Legal Tract	6722
Legal Lot Number	10
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 are on file and can be viewed instantly on this page with a free 10-day trial.

Owner of Record	2 Company Names on Record
Mailing Address	263 GRISSOM ST, HERCULES, CA 94547-1048
Occupancy	Owner Occupied
Owner Type	Company
Vesting	Trust, Family Trust

Deeds, Mortgages & Sale History

Date	Document
Sep 5, 2018	Deed of Trust, Mortgage · Line of Credit WELLS FARGO BANK NA
Nov 5, 2021	Intrafamily Transfer, Transfer · Conventional Mortgage WELLS FARGO BANK NA
Sep 29, 2020	Deed of Trust, Mortgage · Conventional Mortgage WELLS FARGO BANK NA
Jun 5, 2017	Intrafamily Transfer, Transfer · Conventional Mortgage WELLS FARGO BANK NA

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Transfer Date	Nov 1, 2021
Transfer Doc	0000309630
Record Updated	Sep 20, 2026

September 2018: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	263 GRISSOM ST, HERCULES, CA 94547-1048
Transaction Type	Mortgage
Record Updated	Nov 3, 2022

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000141912
Date	Sep 5, 2018
Instrument	2018-141912

Lender

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

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	360 Months
Due	Sep 27, 2048

November 2021: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Nov 5, 2021
Property Address	263 GRISSOM ST, HERCULES, CA 94547-1048
Document Number	0000309630
Map Reference	MB 326 PG 9
Instrument Date	Nov 1, 2021
Instrument	2021-309630
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE, OLD REPUBLIC 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
Relationship	Joint Tenants
Address	263 GRISSOM ST, HERCULES, CA 94547-1048

Mortgage

Document Number	0000309631
Date	Nov 5, 2021
Instrument	2021-309631

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Dec 1, 2036

September 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	263 GRISSOM ST, HERCULES, CA 94547-1048
Transaction Type	Mortgage
Record Updated	Feb 5, 2021
Title Company	CHICAGO TITLE COMPANY

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	263 GRISSOM ST, HERCULES, CA 94547-1048

Mortgage

Document Number	0000219791
Date	Sep 29, 2020
Instrument	2020-219791

Lender

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

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	121 Months
Due	Oct 1, 2030

June 2017: Intrafamily Transfer, Transfer

Document Type	Intrafamily Transfer
Jurisdiction	CONTRA COSTA CA
Recording Date	Jun 5, 2017
Property Address	263 GRISSOM ST, HERCULES, CA 94547-1048
Document Number	0000099238
Map Reference	MB326 PG9
Instrument Date	May 25, 2017
Instrument	2017-099238
Transaction Type	Transfer
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC 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	Joint Tenants
Address	263 GRISSOM ST, HERCULES, CA 94547-1048

Mortgage

Document Number	0000099239
Date	Jun 5, 2017
Instrument	2017-099239

Lender

Name	WELLS FARGO BANK NA
Type	Bank

Agreement

Type	Conventional Mortgage
Amount	Amount Recorded
Term	181 Months
Due	Jul 1, 2032

Interest

Rate Type	Adjustable Rate

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		$492,067 (+2.84%) Land $137,797 Building $354,270
2025	$8,005.00 (+6.12%)	$478,498 (+4.04%) Land $135,096 Building $343,402
2023	$7,543.00 (+1.18%)	$459,919 Land $129,851 Building $330,068
2022	$7,455.00

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
Nearest Special Flood Hazard Area	Zone A, within 500 ft
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 74% of the US · above 50% 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	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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