Contra Costa County property record for 821 Hardcastle Rd, Oakley, CA 94561
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 3 ba · 2,155 sqft · built 2023 |
| Lot Size | 0.093 acres (4,067 sqft) |
| Owner | Individual Name on File |
| Last Sale | $683,500 (Nov 2023) |
| Tax Bill | $12,031 (2025) |
| Deeds & Mortgages | Jan 2026 Mortgage Nov 2023 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 033-470-043-2 |
| Primary APN | 033-470-043-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3 Baths |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,155 sqft Living Area |
| 1st Floor Area | 977 sqft |
| 2nd Floor Area | 1,178 sqft |
| Year Built | Built 2023 |
|---|---|
| Effective Year Built | Effective 2023 |
| Lot Area | 4,067 sqft (0.093 acres) |
| Garage Type | Attached |
| Garage Area | 420 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 821 HARDCASTLE RANCH RD |
|---|---|
| City | OAKLEY |
| State | CA |
| Zip | 94561 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T9498 L43 |
| Legal Subdivision | SUBDIVISION 9498 ACACIA |
| Legal Tract | 9498 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | EAST CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 302012 |
821 Hardcastle Rd is owned and occupied by an individual who bought it in November 2023.
Source: Contra Costa County records, as of August 17, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 821 HARDCASTLE RANCH RD, OAKLEY, CA 94561 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Jan 12, 2026 | Deed of Trust, Mortgage · FHA Mortgage ROCKET MORTGAGE LLC |
| Nov 21, 2023 | Grant Deed, Transfer · Conventional Mortgage PARAMOUNT RESIDENTIAL MORTGAGE GROU |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Nov 21, 2023 · Amount on File |
| Deed Sale | Nov 21, 2023 · Amount on File |
| Deed Document Number | 2023124507 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 821 HARDCASTLE RD, OAKLEY, CA 94561-2789 |
| Transaction Type | Mortgage |
| Record Updated | Jan 23, 2026 |
| Title Company | CHICAGO TITLE COMPANY |
| Name | Verified Name |
|---|---|
| Address | 821 HARDCASTLE RD, OAKLEY, CA 94561-2789 |
| Document Number | 0000002878 |
|---|---|
| Date | Jan 12, 2026 |
| Instrument | 2026- 002878 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | 1050 WOODWARD AVE, DETROIT, MI 48226 |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Feb 1, 2056 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 21, 2023 |
| Property Address | 821 HARDCASTLE RD, OAKLEY, CA 94561-2789 |
| Document Number | 0000124507 |
| Map Reference | MB 543 PG 44-49 |
| Instrument Date | Nov 1, 2023 |
| Instrument | 2023-124507 |
| Transaction Type | Transfer |
| Record Updated | Dec 5, 2023 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 821 HARDCASTLE RD, OAKLEY, CA 94561-2789 |
| Document Number | 0000124508 |
|---|---|
| Date | Nov 21, 2023 |
| Instrument | 2023-124508 |
| Name | PARAMOUNT RESIDENTIAL MORTGAGE GROU |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Dec 1, 2053 |
| Document Number | 0000124509 |
|---|---|
| Date | Nov 21, 2023 |
| Instrument | 2023-124509 |
| Name | PARAMOUNT RESIDENTIAL MORTGAGE GROUP INC |
|---|---|
| Type | Mortgage Company |
| Address | CORONA, CA 92879 |
| Type | Stand-Alone Second Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 362 Months |
| Due | Jan 8, 2054 |
The 2025 property tax bill for 821 Hardcastle Rd was $12,031 with a homeowner's exemption.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Oakley City |
| Secondary School District | Liberty Union High School District (09 - 12) |
| Elementary School District | Oakley Union Elementary School District (KG - 08) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $710,905 (+2%) Land $182,070 Building $528,835 | |
| 2025 | $12,031.00 Homeowner's exemption | $696,966 Land $178,500 Building $518,466 |
| 2023 | $5,456.00 (+50.68%) | $164,407 Land $164,407 |
| 2022 | $3,621.00 |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
FEMA maps place 821 Hardcastle Rd 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 risk around 821 Hardcastle Rd is low, with a 0.06% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 64% of the US · lower than 79% of California |
|---|---|
| Wildfire Likelihood | 0.06% annual chance |
| Exposure | Direct burnable vegetation |
Values cover an area roughly 900 ft across, not the parcel itself; insurers use their own ratings.
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | DIABLO WATER DISTRICT serves 47,158 people · EPA ID CA0710007 |
|---|---|
| Water Source | Purchased surface water from RANDALL-BOLD WATER TREATMENT PLANT |
| Last State Inspection | Jan 2024 |
| Also Mapped Here | CONTRA COSTA WATER DISTRICT |
| Lead | 2 ppb (2020–2022) action level 15 ppb |
| 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.
Source: FCC Broadband Data Collection, based on 597 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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