Contra Costa County property record for 417 Boulder Dr, Antioch, CA 94509
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2.5 ba · 2,046 sqft · built 1986 |
| Lot Size | 0.178 acres (7,740 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $580,000 (Aug 2005) |
| Tax Bill | $8,102 (2025) |
| Deeds & Mortgages | Aug 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 072-232-003-3 |
| Primary APN | 072-232-003-3 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,046 sqft Living Area |
| Gross Area | 2,516 sqft |
| 1st Floor Area | 1,064 sqft |
| 2nd Floor Area | 982 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1986 |
|---|---|
| Effective Year Built | Effective 1986 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Roof Material | Wood Shingle |
| Lot Area | 7,740 sqft (0.178 acres) |
| Garage Type | Attached |
| Garage Area | 470 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 417 BOULDER DR |
|---|---|
| City | ANTIOCH |
| State | CA |
| Zip | 94509-6907 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | T05614 L0041 B EX MR |
| Legal Subdivision | SUBDIVISION 5614 |
| Legal Tract | 05614 |
| Legal Lot Number | 41 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | ANTIOCH-PITTSBURG |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 355109 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 417 BOULDER DR, ANTIOCH, CA 94509-6907 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Aug 2, 2005 · Amount on Record |
| Deed Sale | Aug 2, 2005 · Amount on Record |
| Prior Sale | Apr 16, 2001 · Amount on Record |
| Deed Document Number | 2005286956 |
| Last Transfer Date | Feb 23, 2007 |
| Transfer Doc | 0000061665 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 417 BOULDER DR, ANTIOCH, CA 94509-6907 |
| Document Number | 0000165479 |
| Instrument Date | Aug 3, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Aug 26, 2020 |
| Title Company | WESTMINSTER TITLE COMPANY INC, WESTMINSTER TITLE CO INC |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants with Right of Survivorship |
| Address | 417 BOULDER DR ANTIOCH CA 945096907, ANTIOCH, CA 94509-6907 |
| Document Number | 0000165479 |
|---|---|
| Date | Aug 7, 2020 |
| Instrument | 165479 |
| Name | OCEAN LNDG HM LNS INC |
|---|---|
| Address | IRVINE, CA 92612 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Aug 6, 2050 |
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 | $610,000 (-9.9%) Land $265,033 Building $344,967 | |
| 2025 | $8,102.00 (+6.09%) Homeowner's exemption | $677,000 (+5.29%) Land $294,143 Building $382,857 |
| 2023 | $7,637.00 (-0.22%) Homeowner's exemption | $643,000 Land $279,000 Building $364,000 |
| 2022 | $7,654.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.01% annual chance |
| Exposure | None beyond 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 645 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 |
| AT&T DSL | 100 / 20 |
May also be available: Verizon.
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