Contra Costa County property record for 9 W 15th St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 810 sqft · built 1955 |
| Lot Size | 0.091 acres (3,950 sqft) |
| Owner | Individual Name on File |
| Last Sale | $360,000 (Jul 2025) |
| Tax Bill | $4,364 (2025) |
| Deeds & Mortgages | Oct 2020 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 067-103-026 |
| Primary APN | 067-103-026 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 810 sqft Living Area |
| Gross Area | 1,025 sqft |
| 1st Floor Area | 810 sqft |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Bungalow |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 3,950 sqft (0.091 acres) |
| Lot Dimensions | 79 ft deep x 50 ft wide |
| Garage Type | Attached |
| Garage Area | 215 sqft |
| Parking Spaces | 1 Parking Space |
| Cooling System | Wall Unit |
|---|---|
| Heating System | Floor/Wall Furnace |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 9 W 15TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2317 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | PARCEL MAP 27 PG 24 PCL A |
| Legal Subdivision | PM 27 24 |
| Legal Tract | 27PM24 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 2 |
| Census Block | 2003 |
| Census Tract | 306003 |
9 W 15th St is owned and occupied by an individual who bought it in July 2025.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 9 W 15TH ST, ANTIOCH, CA 94509-2317 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Man |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Jul 29, 2025 · Amount on File |
| Deed Sale | Jul 29, 2025 · Amount on File |
| Prior Sale | Oct 29, 2020 · Amount on File |
| Deed Document Number | 202575721 |
| Prior Transfer Date | Jan 28, 2003 |
| Prior Transfer Doc | 0000057041 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 29, 2020 |
| Property Address | 9 W 15TH ST, ANTIOCH, CA 94509-2317 |
| Document Number | 0000256197 |
| Map Reference | MB 27 PG 24 |
| Instrument Date | Oct 26, 2020 |
| Instrument | 2020-256197 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | CHICAGO TITLE COMPANY |
| Amount | Amount on Record |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 9 W 15TH ST, ANTIOCH, CA 94509-2317 |
| Document Number | 0000256198 |
|---|---|
| Date | Oct 29, 2020 |
| Instrument | 2020-256198 |
| Name | PARKSIDE LENDING LLC |
|---|---|
| Type | Lending Institution |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Nov 1, 2050 |
The 2025 property tax bill for 9 W 15th St was $4,364.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $360,000 (+3.93%) Land $255,000 Building $105,000 | |
| 2025 | $4,364.00 Homeowner's exemption | $346,376 Land $238,134 Building $108,242 |
| 2023 | $4,139.00 (+1.57%) Homeowner's exemption | $332,928 Land $228,888 Building $104,040 |
| 2022 | $4,075.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 9 W 15th St in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 9 W 15th St has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 | CITY OF ANTIOCH serves 116,781 people · EPA ID CA0710001 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2024 |
| Lead | Under 1 ppb (2022–2024) 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 593 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile Fixed Wireless | 100 / 20 |
May also be available: Verizon.
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