Contra Costa County property record for 9 Helmuth Ln, Antioch, CA 94509 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 2 bd · 1 ba · 696 sqft · built 1942 |
| Lot Size | 0.052 acres (2,254 sqft) |
| Owner | Company Name on File |
| Last Sale | $59,000 (Apr 1997) |
| Tax Bill | $1,563 (2025) |
| Deeds & Mortgages | Jan 2026 Sale |
| Flood Zone | Zone X (minimal risk) |
| APN | 068-041-027-1 |
| Primary APN | 068-041-027-1 |
|---|---|
| Alternative APN |
|
| Bedrooms | 2 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 4 Rooms |
| Stories | 1 Story |
| Building Area | 696 sqft Living Area |
| Gross Area | 936 sqft |
| 1st Floor Area | 696 sqft |
| Year Built | Built 1942 |
|---|---|
| Effective Year Built | Effective 1948 |
| Lot Area | 2,254 sqft (0.052 acres) |
| Lot Dimensions | 49 ft deep x 45 ft wide |
| Garage Type | Attached |
| Garage Area | 240 sqft |
| Parking Spaces | 1 Parking Space |
| Heating System | Floor/Wall Furnace |
|---|
| Street Address | 9 HELMUTH LN |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-2637 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | POR SEC 19 T2N R2E |
| Legal Range | 02E |
| Legal Township | 02N |
| Legal Section | 19 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 2 |
| Census Block | 2007 |
| Census Tract | 306003 |
Source: Contra Costa County records · APN 068-041-027-1
Assessment roll updated July 14, 2026 · Last verified July 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Company Name on File |
|---|---|
| Mailing Address | 9 HELMUTH LN, ANTIOCH, CA 94509-2637 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Apr 10, 1997 · Amount on Record |
| Deed Sale | Apr 10, 1997 · Amount on Record |
| Deed Document Number | 199759064 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 22, 2026 |
| Property Address | 9 HELMUTH LN, ANTIOCH, CA 94509-2637 |
| Document Number | 0000006739 |
| Instrument Date | Jan 20, 2026 |
| Instrument | 2026- 006739 |
| Transaction Type | Transfer |
| Record Updated | Feb 02, 2026 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 9 HELMUTH LN, ANTIOCH, CA 94509-2637 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $97,813 (+2%) Land $37,360 Building $60,453 | |
| 2025 | $1,563.00 (+7.57%) Homeowner's exemption | $95,896 (+4.04%) Land $36,628 Building $59,268 |
| 2023 | $1,453.00 (+1.18%) Homeowner's exemption | $92,173 Land $35,206 Building $56,967 |
| 2022 | $1,436.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 741 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| AT&T | Fiber | 5,000 / 5,000 |
| Xfinity | Cable | 2,000 / 250 |
| Unwired | Fixed Wireless | 300 / 25 |
May also be available at this address: AT&T, Verizon. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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