100 Bay St, Hercules, CA 94547 Property Records

Contra Costa County property record for 100 Bay St, Hercules, CA 94547

Property Summary

Property Type	Single Family Home
Details	2 bd · 1.5 ba · 1,468 sqft · built 1900
Lot Size	0.106 acres (4,608 sqft)
Owner	Individual Name on File
Last Sale	$94,000 (Feb 2002)
Tax Bill	$7,579 (2025)
Deeds & Mortgages	May 2026 Line of Credit
Flood Zone	Zone X (minimal risk)
APN	`404-170-013-1`

Property Details

APN / Parcel Number

Primary APN	`404-170-013-1`
Alternative APN	`404-170-013`

Interior

Bedrooms	2 Beds
Full Baths	1.5 Baths
Half Baths	1 Half Bath
Total Rooms	8 Rooms
Stories	2 Stories
Building Area	1,468 sqft Living Area
1st Floor Area	896 sqft
2nd Floor Area	572 sqft

Exterior

Year Built	Built 1900
Effective Year Built	Effective 1985
Lot Area	4,608 sqft (0.106 acres)
Garage Type	Attached
Garage Area	299 sqft
Parking Spaces	1 Parking Space

Location & Zoning

Street Address	100 BAY ST
City	HERCULES
State	CA
Zip	94547-3717
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	H
Legal Description	T06102 L0013 B
Legal Subdivision	6102
Legal Tract	06102
Legal Lot Number	13
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	WEST CONTRA COSTA
Census Block Group	1
Census Block	1001
Census Tract	359105

Owner

Source: Contra Costa County records · APN 404-170-013-1

Assessment roll updated July 14, 2026 · Last verified July 2026

Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.

Owner of Record	Individual Name on File
Mailing Address	100 BAY ST, HERCULES, CA 94547-3717
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Single Person

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names	Verified Name on Deed
Last Sale	Feb 15, 2002 · Amount on Record
Deed Sale	Feb 15, 2002 · Amount on Record
Deed Document Number	200253616
Last Transfer Date	Jun 05, 2003
Transfer Doc	0000383479
Record Updated	Sep 20, 2026

May 2026: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Recording Date	May 12, 2026
Property Address	100 BAY ST, HERCULES, CA 94547-3717
Document Number	0000049085
Instrument Date	May 05, 2026
Instrument	202649085
Transaction Type	Mortgage
Record Updated	Jul 12, 2026
Title Company	TITLE SERVICE AND LIAISON COMPANIES, INDECOMM GLOBAL SERVICES

Transaction

Tax	$0.00
Additional	Multiple Parcels

Transferred To (Grantee/Buyer)

Name	Verified Name
Address	100 BAY ST, HERCULES, CA 94547-3717
Investor	Possibly a Property Investor

Mortgage

Document Number	0000049085,
Date	May 12, 2026
Instrument	202649085

Lender

Name	LONGBRIDGE FINANCIAL LLC

Agreement

Type	Line of Credit
Amount	Amount Recorded
Term	927 Months
Due	Aug 01, 2103

Interest

Rate	6.37%
Max Rate	-1%

Tax Assessment & Valuation

Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 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

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

Year	Tax Bill	Assessed Value
2026		$469,155 (+2%) Land $153,877 Building $315,278
2025	$7,579.00 (+6.33%) Homeowner's exemption	$459,957 (+4.04%) Land $150,860 Building $309,097
2023	$7,128.00 (+1.22%) Homeowner's exemption	$442,098 Land $145,002 Building $297,096
2022	$7,042.00

Flood & Wildfire

Source: FEMA National Flood Hazard Layer as of October 12, 2026 · FEMA NFIP claims and policies as of September 2026 · USDA Forest Service Wildfire Risk to Communities as of 2024 · Last verified October 2026

Flood

FEMA Flood Zone	Zone X minimal risk
Nearest Special Flood Hazard Area	Zone AE, within 500 ft
Flood Insurance Requirement	Not required lenders may require it
Nearby Flood Policies	1 in force

Wildfire

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 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.

Historic Designation

Source: NPS National Register of Historic Places as of August 1, 2026 · Last verified October 2026

Historic District	Within the Hercules Village listed 1980 · 40 contributing resources · NRIS 80000799

Federal listing alone does not restrict alterations; local historic district rules, which this data does not cover, may apply.

Internet Providers

Source: FCC Broadband Data Collection as of December 31, 2025 · Last verified October 2026

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

May also be available: Sonic Telecom, Unwired.

Based on FCC filings for 505 locations within half a mile of this property.

Drinking Water

Source: EPA Safe Drinking Water Information System as of 2026 Q3 · EPA water system boundaries as of March 2026 · Last verified October 2026

Water System	EAST BAY MUD serves 1,468,000 people
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 as reported to EPA, 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. The full violation and enforcement history is in the system's EPA record.