Contra Costa County property record for 519 W 9th St, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1.5 ba · 1,308 sqft · built 1920 |
| Lot Size | 0.106 acres (4,600 sqft) |
| Owner | Company Name on File |
| Last Sale | $300,000 (Sep 2017) |
| Tax Bill | $4,385 (2025) |
| Deeds & Mortgages | Sep 2018 Mortgage Sep 2017 Sale & Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 066-207-008-5 |
| Primary APN | 066-207-008-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,308 sqft Living Area |
| 1st Floor Area | 1,308 sqft |
| Year Built | Built 1920 |
|---|---|
| Effective Year Built | Effective 1950 |
| Lot Area | 4,600 sqft (0.106 acres) |
| Garage Type | Attached |
| Garage Area | 200 sqft |
| Parking Spaces | 1 Parking Space |
| Street Address | 519 W 9TH ST |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-1644 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R3 |
| Legal Description | TOWN OF ANTIOCH E 46 FT OF LOT 5 BLK 114 |
| Legal Subdivision | ANTIOCH |
| Legal Block | 114 |
| Legal Lot Number | 5 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 3 |
| Census Block | 3059 |
| Census Tract | 305000 |
519 W 9th St is owned by a company that bought it in September 2017.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | PO BOX 887, SAN RAMON, CA 94583-5887 |
| Owner Type | Company |
| Vesting | Company |
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 |
|---|---|
| Sep 28, 2018 | Deed of Trust, Mortgage · ARM FIRST REPUBLIC BANK |
| Sep 25, 2017 | Grant Deed, Transfer · Commercial Mortgage 5 ARCH FUNDING CORP |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Sep 25, 2017 · Amount on File |
| Deed Sale | Sep 25, 2017 · Amount on File |
| Prior Sale | Feb 19, 1999 · Amount on File |
| Deed Document Number | 2017174848 |
| Prior Transfer Date | Jun 23, 2004 |
| Prior Transfer Doc | 0000255211 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 519 W 9TH ST, ANTIOCH, CA 94509-1644 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | PLACER TITLE |
| Name | Verified Name |
|---|
| Document Number | 0000155425 |
|---|---|
| Date | Sep 28, 2018 |
| Instrument | 2018-155425 |
| Name | FIRST REPUBLIC BANK |
|---|---|
| Type | Bank |
| Address | SAN FRANCISCO, CA 94111 |
| Type | ARM |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Oct 1, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.05% |
| Type Change Date | Oct 1, 2028 |
| Change Frequency | Monthly |
| Min Rate At Change | 2.65% |
| Max Rate At Change | 10.9% |
| Index | 1-Month LIBOR |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 25, 2017 |
| Property Address | 519 W 9TH ST, ANTIOCH, CA 94509-1644 |
| Document Number | 0000174848 |
| Map Reference | MB C PG48 |
| Instrument Date | Sep 20, 2017 |
| Instrument | 2017-174848 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | FIRST AMERICAN 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 |
|---|---|
| Address | PO BOX 887, SAN RAMON, CA 94583-5887 |
| Investor | Possibly a Property Investor |
| Document Number | 0000174849 |
|---|---|
| Date | Sep 25, 2017 |
| Instrument | 2017-174849 |
| Name | 5 ARCH FUNDING CORP |
|---|---|
| Type | Lending Institution |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount on Record |
The 2025 property tax bill for 519 W 9th St was $4,385.
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 | $348,170 (+2%) Land $185,691 Building $162,479 | |
| 2025 | $4,385.00 | $341,344 Land $182,050 Building $159,294 |
| 2023 | $4,162.00 (+1.54%) | $328,091 Land $174,982 Building $153,109 |
| 2022 | $4,099.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 519 W 9th St in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2017.
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 | 5 in force |
| Nearby Flood Claims | 1 (2017) |
| Most Recent Claim | Feb 2017 · Severe Winter Storms, Flooding, And Mudslides |
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.
The area around 519 W 9th 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 605 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · Fixed Wireless, DSL in parts of the area | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
May also be available: T-Mobile, Verizon.
Search by:
By searching, you agree to: Terms • Privacy • Disclosures