Contra Costa County property record for 399 Donegal Pl, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,416 sqft · built 1966 |
| Lot Size | 0.207 acres (9,000 sqft) |
| Owner | Trust Name on File |
| Last Sale | $40,000 (May 1995) |
| Tax Bill | $4,509 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 164-271-033-7 |
| Primary APN | 164-271-033-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,416 sqft Living Area |
| Gross Area | 1,896 sqft |
| 1st Floor Area | 1,416 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1966 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 9,000 sqft (0.207 acres) |
| Garage Type | Attached |
| Garage Area | 480 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 399 DONEGAL PL |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-6200 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | TRACT 3302 LOT 83 |
| Legal Subdivision | AMENDED MAP OF SUBDIVISION 3302 |
| Legal Tract | 3302 |
| Legal Lot Number | 83 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1023 |
| Census Tract | 321103 |
399 Donegal Pl is owner-occupied and held in a trust since May 1995.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 399 DONEGAL PL, MARTINEZ, CA 94553-6200 |
| Occupancy | Owner Occupied |
| 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 | Name on Deed |
|---|---|
| Last Sale | May 31, 1995 · Amount on File |
| Deed Sale | May 31, 1995 · Amount on File |
| Prior Sale | Jan 5, 1994 · Amount on File |
| Deed Document Number | 199586023 |
| Prior Transfer Date | May 22, 1995 |
| Prior Transfer Doc | 0000086023 |
| Record Updated | Oct 29, 2026 |
The 2025 property tax bill for 399 Donegal Pl was $4,509 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 | Martinez City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $330,152 (+2%) Land $162,680 Building $167,472 | |
| 2025 | $4,509.00 Homeowner's exemption | $323,680 Land $159,491 Building $164,189 |
| 2023 | $4,318.00 (+0.86%) Homeowner's exemption | $311,113 Land $153,299 Building $157,814 |
| 2022 | $4,281.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 399 Donegal Pl 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 399 Donegal Pl is moderate, ranking above 51% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 51% of the US · lower than 70% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 MARTINEZ serves 31,015 people · EPA ID CA0710006 |
|---|---|
| Water Source | Purchased surface water from CONTRA COSTA WATER DISTRICT |
| Last State Inspection | Oct 2025 |
| Also Mapped Here | EAST BAY MUD |
| Lead | Under 1 ppb (2023–2025) 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 548 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 |
| AT&T DSL | 100 / 20 |
May also be available: T-Mobile.
5G (outdoors only) and 4G LTE
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