Contra Costa County property record for 849 Corte Briones, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 3,316 sqft · built 1985 |
| Lot Size | 0.689 acres (30,000 sqft) |
| Owner | Trust Name on File |
| Tax Bill | $9,735 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 365-150-060-9 |
| Primary APN | 365-150-060-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 10 Rooms |
| Stories | 1 Story |
| Building Area | 3,316 sqft Living Area |
| 1st Floor Area | 3,316 sqft |
| Year Built | Built 1985 |
|---|---|
| Effective Year Built | Effective 1991 |
| Lot Area | 30,000 sqft (0.689 acres) |
| Garage Type | Attached |
| Garage Area | 668 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 849 CORTE BRIONES |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-5950 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R20 |
| Legal Description | PCL MAP 68 PG 38 PCL B |
| Legal Tract | 68PM38 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2002 |
| Census Tract | 347000 |
849 Corte Briones is owner-occupied and held in a trust since May 1996.
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | Trust Name on File |
|---|---|
| Mailing Address | 849 CORTE BRIONES, MARTINEZ, CA 94553-5950 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | May 6, 1996 |
| Transfer Doc | 0000089330 |
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 849 Corte Briones was $9,735 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 | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $767,588 (+2%) Land $239,465 Building $528,123 | |
| 2025 | $9,735.00 Homeowner's exemption | $752,538 Land $234,770 Building $517,768 |
| 2023 | $9,141.00 (+1.68%) Homeowner's exemption | $723,317 Land $225,654 Building $497,663 |
| 2022 | $8,990.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 849 Corte Briones in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1986.
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 |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 1 in force |
| Nearby Flood Claims | 1 (1986) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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 849 Corte Briones is high, ranking above 70% of the US, with a 0.4% 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 45% of California |
|---|---|
| Wildfire Likelihood | 0.4% annual chance |
| Exposure | Direct burnable vegetation |
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 |
| 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 203 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.
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