Contra Costa County property record for 623 Sonora Ct, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,509 sqft · built 1962 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | Company Name on File |
| Last Sale | $250,000 (Oct 1998) |
| Tax Bill | $5,487 (2025) |
| Deeds & Mortgages | Apr 2018 Line of Credit |
| Flood Zone | Zone X (minimal risk) |
| APN | 162-202-019-4 |
| Primary APN | 162-202-019-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,509 sqft Living Area |
| 1st Floor Area | 1,509 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1962 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Roof Material | Wood Shingle |
| Lot Area | 6,500 sqft (0.149 acres) |
| Garage Type | Attached |
| Garage Area | 440 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|---|
| Heating System | Forced Air with A/C |
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 623 SONORA CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4423 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R175 |
| Legal Description | TRACT 2402 LOT 19 |
| Legal Subdivision | SUBDIVISION 2402 |
| Legal Tract | 2402 |
| Legal Lot Number | 19 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3007 |
| Census Tract | 321103 |
Source: Contra Costa County assessment roll, 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 | Company Name on File |
|---|---|
| Mailing Address | 623 SONORA CT, MARTINEZ, CA 94553-4423 |
| Occupancy | Owner Occupied |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Oct 2, 1998 · Amount on Record |
| Deed Sale | Oct 2, 1998 · Amount on Record |
| Prior Sale | Oct 18, 1996 · Amount on Record |
| Deed Document Number | 1998240147 |
| Last Transfer Date | Nov 22, 2011 |
| Transfer Doc | 0000257795 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 623 SONORA CT, MARTINEZ, CA 94553-4423 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Name | Verified Name |
|---|
| Document Number | 0000066649 |
|---|---|
| Date | Apr 30, 2018 |
| Instrument | 2018-066649 |
| Name | JPMORGAN CHASE BANK NA |
|---|---|
| Type | Bank |
| Address | COLUMBUS, OH 43240 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | May 8, 2048 |
| Rate Type | Adjustable Rate |
|---|---|
| Change Frequency | Monthly |
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 | $399,741 (+2%) Land $246,244 Building $153,497 | |
| 2025 | $5,487.00 (+6.52%) Homeowner's exemption | $391,904 (+4.04%) Land $241,416 Building $150,488 |
| 2023 | $5,151.00 (+1.62%) Homeowner's exemption | $376,689 Land $232,043 Building $144,646 |
| 2022 | $5,069.00 |
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 · OpenFEMA NFIP redacted claims and policies, as of September 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Nearest Special Flood Hazard Area | Zone AE, within 100 ft |
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 27 policies |
| Nearby Flood Policies | 27 in force |
| Nearby Flood Claims | 21 (1982–2023) |
| Claims Outside the SFHA | 3 of 21 |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 57% of the US · lower than 65% of California |
|---|---|
| Wildfire Likelihood | 0.2% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 256 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Radiate Holdings, T-Mobile USA, Unwired, Verizon.
5G (outdoors only) and 4G LTE
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