Contra Costa County property record for 1917 Colosseum Way, Antioch, CA 94531
| Property Type | Single Family Home |
|---|---|
| Details | 5 bd · 4 ba · 3,402 sqft · built 2002 |
| Lot Size | 0.174 acres (7,560 sqft) |
| Owner | Individual Name on File |
| Last Sale | $415,500 (May 2002) |
| Tax Bill | $7,260 (2025) |
| Deeds & Mortgages | Nov 2025 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 055-680-047-2 |
| Primary APN | 055-680-047-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 5 Beds |
|---|---|
| Full Baths | 4 Baths |
| Total Rooms | 11 Rooms |
| Stories | 2 Stories |
| Building Area | 3,402 sqft Living Area |
| 1st Floor Area | 1,760 sqft |
| 2nd Floor Area | 1,642 sqft |
| Year Built | Built 2002 |
|---|---|
| Effective Year Built | Effective 2002 |
| Lot Area | 7,560 sqft (0.174 acres) |
| Garage Type | Attached |
| Garage Area | 612 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 1917 COLOSSEUM WAY |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94531-9131 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T8467 L925 |
| Legal Subdivision | 8467 BLACK DIAMOND KNOLLS 22 |
| Legal Tract | 8467 |
| Legal Lot Number | 925 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | TASSAJARA |
| Census Block Group | 1 |
| Census Block | 1007 |
| Census Tract | 355119 |
1917 Colosseum Way is owned and occupied by an individual who acquired it in November 2006.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 1917 COLOSSEUM WAY, ANTIOCH, CA 94531-9131 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Single Person |
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 | May 30, 2002 · Amount on File |
| Deed Sale | May 30, 2002 · Amount on File |
| Deed Document Number | 2002191880 |
| Last Transfer Date | Nov 28, 2006 |
| Transfer Doc | 0000390237 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 1917 COLOSSEUM WAY, ANTIOCH, CA 94531-9131 |
| Transaction Type | Mortgage |
| Record Updated | Dec 2, 2025 |
| Name | Verified Name |
|---|---|
| Address | 1917 COLOSSEUM WAY, ANTIOCH, CA 94531-9131 |
| Document Number | 0000131612 |
|---|---|
| Date | Nov 21, 2025 |
| Instrument | 2025- 131612 |
| Name | TRI COUNTIES BANK |
|---|---|
| Type | Bank |
| Address | 2200 SAND CREEK RD STE A, BRENTWOOD, CA 94513 |
| Type | Line of Credit |
|---|---|
| Amount | Amount on Record |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
The 2025 property tax bill for 1917 Colosseum Way was $7,260 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 | Antioch City |
| Unified School District | Antioch Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $635,565 (+2%) Land $158,205 Building $477,360 | |
| 2025 | $7,260.00 Homeowner's exemption | $623,103 Land $155,103 Building $468,000 |
| 2023 | $6,849.00 (+1.6%) Homeowner's exemption | $598,909 Land $149,081 Building $449,828 |
| 2022 | $6,741.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 1917 Colosseum Way 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.
Wildfire risk around 1917 Colosseum Way is high, ranking above 70% of the US, with a 0.3% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | High above 70% of the US · above 44% of California |
|---|---|
| Wildfire Likelihood | 0.3% annual chance |
| Exposure | Indirect 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 389 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| AT&T Fiber · DSL | 5,000 / 5,000 |
| Xfinity Cable | 2,000 / 250 |
May also be available: Verizon.
5G and 4G LTE (outdoors only)
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