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178 Obsidian Way, Hercules, CA 94547 Property Records

Contra Costa County property record for 178 Obsidian Way, Hercules, CA 94547

Property Summary

Property TypeSingle Family Home
Details4 bd · 3 ba · 2,346 sqft · built 1987
Lot Size0.184 acres (8,000 sqft)
Owner2 Individual Names on File
Last Sale$808,500 (Oct 2020)
Tax Bill$12,979 (2025)
Deeds & MortgagesOct 2020 Sale & Mortgage
Flood ZoneZone X (minimal risk)
APN407-044-001-3

Property Details

APN / Parcel Number

Primary APN407-044-001-3
Alternative APN
  • 407-044-001

Interior

Bedrooms4 Beds
Full Baths3 Baths
Total Rooms12 Rooms
Stories2 Stories
Building Area2,346 sqft Living Area
1st Floor Area1,334 sqft
2nd Floor Area1,012 sqft
Fireplaces1 Fireplace
FireplaceFireplace

Exterior

Year BuiltBuilt 1987
Effective Year BuiltEffective 1997
Architectural StyleContemporary
Exterior MaterialStucco
Roof MaterialTile
Lot Area8,000 sqft (0.184 acres)
Garage TypeAttached
Garage Area489 sqft
Parking Spaces2 Parking Spaces

Utilities, Heating & Cooling

Heating SystemForced Air with A/C
Heating FuelGas
SewerMunicipal
Water SourceCommercial

Location & Zoning

Street Address178 OBSIDIAN WAY
CityHERCULES
StateCA
Zip94547-1725
Property CategoryResidential
Property TypeResidential > Single Family > Home
Local Zoning CodeR1
Legal DescriptionT6156A L0184 B
Legal SubdivisionSUBDIVISION 6156
Legal Tract6156A
Legal Lot Number0184
JurisdictionCONTRA COSTA CA
Township / Civil DivisionWEST CONTRA COSTA
Census Block Group3
Census Block3001
Census Tract359204

Owner

178 Obsidian Way is owned and occupied by two individuals who bought it in October 2020.

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 Record2 Individual Names on File
Mailing Address178 OBSIDIAN WAY, HERCULES, CA 94547-1725
OccupancyOwner Occupied
Owner TypeIndividual

Deeds, Mortgages & Sale History

Assessor's Deed Record

Deed Names2 Names on Deed
Last SaleOct 30, 2020 · Amount on File
Deed SaleOct 30, 2020 · Amount on File
Deed Document Number2020257270
Record UpdatedOct 29, 2026

October 2020: Grant Deed, Transfer

Document TypeGrant Deed
JurisdictionCONTRA COSTA CA
Recording DateOct 30, 2020
Property Address178 OBSIDIAN WAY, HERCULES, CA 94547-1725
Document Number0000257270
Map ReferenceMB 278 PG 43-58
Instrument DateOct 24, 2020
Instrument2020-257270
Transaction TypeTransfer
Record UpdatedNov 3, 2022
Title CompanyOLD REPUBLIC TITLE COMPANY

Transaction

AmountAmount on Record
DownpaymentDownpayment on Record
Loan-to-Value (LTV)LTV on Record
Tax$0.00
Amount AccuracyRounded by County
Additional
  • Arm's Length

Transferred From (Grantor/Seller)

NameVerified Name

Transferred To (Grantee/Buyer)

NameVerified Name
RelationshipJoint Tenants
Address178 OBSIDIAN WAY, HERCULES, CA 94547-1725

Mortgage

Document Number0000257271
DateOct 30, 2020
Instrument2020-257271
Lender
NameQUICKEN LOANS LLC
TypeMortgage Company
AddressDETROIT, MI 48226
Agreement
TypeConventional Mortgage
AmountAmount on Record
Term361 Months
DueNov 1, 2050

Tax Assessment & Valuation

The 2025 property tax bill for 178 Obsidian Way was $12,979 with a homeowner's exemption.

Source: Contra Costa County assessment roll, as of July 14, 2026

Property Jurisdictions

TypeName
StateCalifornia
CountyContra Costa County
MunicipalityHercules City
Unified School DistrictWest Contra Costa Unified School District (KG - 12)

Tax Bill & Assessment History

YearTax BillAssessed Value
2026$892,646 (+2%) Land $386,427 Building $506,219
2025$12,979.00 Homeowner's exemption$875,144 Land $378,850 Building $496,294
2023$12,306.00 (+1.1%) Homeowner's exemption$841,163 Land $364,140 Building $477,023
2022$12,172.00

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

Flood

FEMA maps place 178 Obsidian Way 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 ZoneZone X
minimal risk
Flood Insurance RequirementNot required
lenders may require it
Nearby Flood Policies1 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 178 Obsidian Way is low, with a 0.01% annual chance of wildfire.

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

Wildfire RiskLow
lower than 80% of the US · lower than 88% of California
Wildfire Likelihood0.01% annual chance
ExposureIndirect
within ember reach
Adjoins Burnable LandYes

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 SystemEAST BAY MUD
serves 1,468,000 people · EPA ID CA0110005
Water SourceSurface water
Last State InspectionDec 2021
LeadUnder 1 ppb (2022–2024)
action level 15 ppb

Violations Reported to EPA

Water QualityNone
last 10 years
Treatment and ProcedureNone
last 10 years
Monitoring and ReportingNone
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 403 locations within half a mile, as of December 31, 2025

ProviderMax Down / Up (Mbps)
Xfinity
Cable		2,000 / 250
Verizon
Fixed Wireless		300 / 20
AT&T
DSL · Fiber in parts of the area		100 / 20

May also be available: T-Mobile, Unwired.

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