Contra Costa County property record for 5685 White Mountain Ct, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,656 sqft · built 1979 |
| Lot Size | 0.184 acres (8,025 sqft) |
| Owner | 2 Trust Names on File |
| Last Sale | $547,500 (Feb 2013) |
| Tax Bill | $8,881 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 155-401-001-5 |
| Primary APN | 155-401-001-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 9 Rooms |
| Stories | 1 Story |
| Building Area | 1,656 sqft Living Area |
| Gross Area | 2,139 sqft |
| 1st Floor Area | 1,656 sqft |
| Year Built | Built 1979 |
|---|---|
| Effective Year Built | Effective 1989 |
| Lot Area | 8,025 sqft (0.184 acres) |
| Lot Dimensions | 100 ft deep x 84 ft wide |
| Garage Type | Attached |
| Garage Area | 483 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Central |
|---|
| Street Address | 5685 WHITE MOUNTAIN CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-5843 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R75 |
| Legal Description | T04957 L0066 B |
| Legal Tract | 04957 |
| Legal Lot Number | 66 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3014 |
| Census Tract | 321102 |
5685 White Mountain Ct is held in a trust since December 2013.
Source: Contra Costa County records, as of September 22, 2026
| Owner of Record | 2 Trust Names on File |
|---|---|
| Mailing Address | 5685 WHITE MOUNTAIN CT, MARTINEZ, CA 94553-5843 |
| Owner Type | Company |
| Vesting | Trust |
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 | 2 Names on Deed |
|---|---|
| Last Sale | Feb 22, 2013 · Amount on File |
| Deed Sale | Feb 22, 2013 · Amount on File |
| Deed Document Number | 201347440 |
| Last Transfer Date | Dec 23, 2013 |
| Transfer Doc | 0000298046 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 5685 White Mountain Ct was $8,881.
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $687,676 (+2%) Land $414,491 Building $273,185 | |
| 2025 | $8,881.00 | $674,193 Land $406,364 Building $267,829 |
| 2023 | $8,342.00 (+1.67%) | $648,016 Land $390,586 Building $257,430 |
| 2022 | $8,205.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 5685 White Mountain Ct in Zone X, an area of minimal flood risk, though there have been 2 flood claims nearby since 1982.
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 Claims | 2 (1982–1995) |
| Claims Outside the SFHA | 1 of 2 |
| Most Recent Claim | Jan 1995 · Severe Winter Storms, Flooding, Landslides, Mud Flows |
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.
Wildfire risk around 5685 White Mountain Ct is low, with a 0.04% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 67% of the US · lower than 81% of California |
|---|---|
| Wildfire Likelihood | 0.04% 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 | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 371 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 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL | 100 / 20 |
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