121 Onyx Ct, Hercules, CA 94547 Property Records

Contra Costa County property record for 121 Onyx Ct, Hercules, CA 94547

Property Summary

Property Type	Single Family Home
Details	5 bd · 3 ba · 2,828 sqft · built 1998
Lot Size	0.147 acres (6,400 sqft)
Owner	2 Individual Names on File
Last Sale	$323,500 (Apr 1999)
Tax Bill	$7,826 (2025)
Deeds & Mortgages	Feb 2019 Mortgage Apr 2019 Line of Credit + 2 more
Flood Zone	Zone X (minimal risk)
APN	`407-113-005`

Property Details

APN / Parcel Number

Primary APN	`407-113-005`
Alternative APN	`407-113-005-0`

Interior

Bedrooms	5 Beds
Full Baths	3 Baths
Total Rooms	9 Rooms
Stories	2 Stories
Building Area	2,828 sqft Living Area
1st Floor Area	1,481 sqft
2nd Floor Area	1,347 sqft

Exterior

Year Built	Built 1998
Effective Year Built	Effective 1999
Lot Area	6,400 sqft (0.147 acres)
Garage Type	Attached
Garage Area	703 sqft
Parking Spaces	2 Parking Spaces

Location & Zoning

Street Address	121 ONYX CT
City	HERCULES
State	CA
Zip	94547-1761
Property Category	Residential
Property Type	Residential > Single Family > Home
Local Zoning Code	R1
Legal Description	T06157 L0127 B
Legal Subdivision	SUBDIVISION 6157
Legal Tract	06157
Legal Lot Number	127
Jurisdiction	CONTRA COSTA CA
Township / Civil Division	WEST CONTRA COSTA
Census Block Group	3
Census Block	3008
Census Tract	359204

Owner

121 Onyx Ct is owned and occupied by two individuals who bought it in April 1999.

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

Owner of Record	2 Individual Names on File
Mailing Address	121 ONYX CT, HERCULES, CA 94547-1761
Occupancy	Owner Occupied
Owner Type	Individual
Vesting	Joint Tenants

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
Feb 20, 2019	Deed of Trust, Mortgage · Conventional Mortgage CITIBANK NA
Apr 5, 2019	Deed of Trust, Mortgage · Line of Credit CITIBANK NA
Nov 24, 2020	Deed of Trust, Mortgage · Conventional Mortgage INTELLILOAN INC
Apr 23, 2020	Deed of Trust, Mortgage · Conventional Mortgage SUPREME LNDG

Assessor's Deed Record

Deed Names	2 Names on Deed
Last Sale	Apr 30, 1999 · Amount on File
Deed Sale	Apr 30, 1999 · Amount on File
Deed Document Number	1999116887
Record Updated	Sep 20, 2026

February 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	121 ONYX CT, HERCULES, CA 94547-1761
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	SERVICELINK

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000022438
Date	Feb 20, 2019
Instrument	2019-022438

Lender

Name	CITIBANK NA
Type	Bank
Address	O FALLON, MO 63368

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	181 Months
Due	Mar 1, 2034

April 2019: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	121 ONYX CT, HERCULES, CA 94547-1761
Transaction Type	Mortgage
Record Updated	Nov 3, 2022
Title Company	OLD REPUBLIC TITLE

Transferred To (Grantee/Buyer)

Name	Verified Name

Mortgage

Document Number	0000047249
Date	Apr 5, 2019
Instrument	2019-047249

Lender

Name	CITIBANK NA
Type	Bank
Address	SIOUX FALLS, SD 57104

Agreement

Type	Line of Credit
Amount	Amount on Record

Interest

Rate Type	Adjustable Rate
Change Frequency	Monthly

November 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	121 ONYX CT, HERCULES, CA 94547-1761
Document Number	0000292176
Instrument Date	Nov 24, 2020
Transaction Type	Mortgage
Record Updated	Dec 11, 2020
Title Company	ORANGE COAST TITLE COMPANY, ORANGE COAST TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	121 ONYX CT HERCULES CA 945471761, HERCULES, CA 94547-1761

Mortgage

Document Number	0000292176
Date	Dec 1, 2020
Instrument	292176

Lender

Name	INTELLILOAN INC
Address	SANTA ANA, CA 92799

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	180 Months
Due	Nov 30, 2035

April 2020: Deed of Trust, Mortgage

Document Type	Deed of Trust
Jurisdiction	CONTRA COSTA CA
Property Address	121 ONYX CT, HERCULES, CA 94547-1761
Document Number	0000079669
Instrument Date	Apr 23, 2020
Transaction Type	Mortgage
Record Updated	May 11, 2020
Title Company	WFG NATIONAL TITLE COMPANY, WFG NAT'L TITLE CO

Transferred To (Grantee/Buyer)

Name	Verified Name
Relationship	Joint Tenants with Right of Survivorship
Address	121 ONYX CT HERCULES CA 945471761, HERCULES, CA 94547-1761

Mortgage

Document Number	0000079669
Date	Apr 28, 2020
Instrument	79669

Lender

Name	SUPREME LNDG
Address	DALLAS, TX 75254

Agreement

Type	Conventional Mortgage
Amount	Amount on Record
Term	180 Months
Due	Apr 27, 2035

Tax Assessment & Valuation

The 2025 property tax bill for 121 Onyx Ct was $7,826 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	Hercules City
Unified School District	West Contra Costa Unified School District (KG - 12)

Tax Bill & Assessment History

Year	Tax Bill	Assessed Value
2026		$517,275 (+2%) Land $137,986 Building $379,289
2025	$7,826.00 Homeowner's exemption	$507,133 Land $135,281 Building $371,852
2023	$7,813.00 (+1.14%) Homeowner's exemption	$487,442 Land $130,029 Building $357,413
2022	$7,725.00

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

Flood

FEMA maps place 121 Onyx Ct in Zone X, an area of minimal flood risk.

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

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 121 Onyx Ct is moderate, ranking above 45% of the US, with a 0.09% annual chance of wildfire.

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

Wildfire Risk	Moderate above 45% of the US · lower than 73% of California
Wildfire Likelihood	0.09% 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 244 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
AT&T DSL	100 / 20

May also be available: Unwired.

Nearby Properties on Onyx Ct

Nearby Streets

Search Property Records by Address or Parcel Number

Search by:

By searching, you agree to: Terms • Privacy • Disclosures