Contra Costa County property record for 103 Williamson Ct, Martinez, CA 94553 · Last verified July 2026
| Property Type | Residential > Single Family > Home |
|---|---|
| Bedrooms | 3 Beds |
| Bathrooms | 2 Baths |
| Year Built | Built 2000 |
| Square Footage | 1,726 sqft Living Area |
| Lot Size | 5,800 sqft (0.133 acres) |
| Occupancy | Owner Occupied |
| Last Sale | $200,500 (1998) |
| Tax Bill | $5,676.00 (2025) |
Source: Contra Costa County records · APN 161-291-023
Assessment roll updated July 14, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 103 WILLIAMSON CT, MARTINEZ, CA 94553-6850 |
| Occupancy | Owner Occupied |
| Owner Type | Owner is an Individual, Couple or Unincorporated Entity |
| Vesting | Joint Tenants |
| Date | Document |
|---|---|
| Feb 10, 2021 | Deed of Trust, Mortgage · Conventional Mortgage BANK OF THE WEST |
| Jun 04, 2019 | Deed of Trust, Mortgage · Line of Credit BANK OF THE WEST |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | May 01, 1998 · Amount on Record |
| Deed Sale | May 01, 1998 · Amount on Record |
| Deed Doc Number | 199896394 |
| Record Refreshed | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 103 WILLIAMSON CT, MARTINEZ, CA 94553-6850 |
| Transaction Type | Mortgage |
| Record Updated | Nov 03, 2022 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Address | 103 WILLIAMSON CT, MARTINEZ, CA 94553-6850 |
| Document Number | 0000040285 |
|---|---|
| Date | Feb 10, 2021 |
| Instrument | 2021-040285 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Address | OMAHA, NE 68154 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 180 Months |
| Due | Feb 01, 2036 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 103 WILLIAMSON CT, MARTINEZ, CA 94553-6850 |
| Document Number | 0000096168 |
| Instrument Date | Jun 04, 2019 |
| Transaction Type | Mortgage |
| Record Updated | Jul 03, 2019 |
| Title Company | FIRST AMERICAN TITLE |
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenant/Joint Tenant w/ Right Of Survivorship |
| Address | 103 WILLIAMSON CT MARTINEZ CA 945536850, MARTINEZ, CA 94553-6850 |
| Document Number | 0000096168 |
|---|---|
| Date | Jun 25, 2019 |
| Instrument | 96168 |
| Name | BANK OF THE WEST |
|---|---|
| Type | Bank |
| Address | OMAHA, NE 68154 |
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Jun 24, 2049 |
| Rate Type | Adjustable Rate |
|---|
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Mount Diablo Unified School District (KG - 12) |
Assessed value is set for property tax purposes and is not a market price estimate.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $374,984 (+2%) Land $102,593 Building $272,391 | |
| 2025 | $5,676.00 (+4.86%) Homeowner's exemption | $367,632 (+4.04%) Land $100,582 Building $267,050 |
| 2023 | $5,413.00 (+2.04%) Homeowner's exemption | $353,358 Land $96,677 Building $256,681 |
| 2022 | $5,305.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified: October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Special Flood Hazard Area | No |
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |
Values are read at the parcel center point; lenders make the official flood determination.
| Primary APN | 161-291-023 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Building Area | 1,726 sqft Living Area |
| 1st Floor | 1,095 sqft 1st Floor |
| 2nd Floor | 631 sqft 2nd Floor |
| Stories | 2 Stories |
| Year Built | Built 1997 |
|---|---|
| Effective Year Built | Effective 2000 |
| Lot Area | 5,800 sqft (0.133 acres) |
| Parking Spaces | 2 Parking Spaces |
| Garage Type | Attached Garage |
| Garage Area | 420 sqft Garage |
| Street Address | 103 WILLIAMSON CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-6850 |
| Property Usage | Residential Property Usage |
| Type | Residential > Single Family > Home |
| Legal Description | T7586 L16 |
| Legal Subdivision | MAP/SUB 7586 |
| Legal Tract | 7586 |
| Legal Lot Number | 16 |
| Jurisdiction | CONTRA COSTA CA |
| Minor Civil Division | CENTRAL CONTRA COSTA |
| Census Blockgroup | 3 |
| Census Block | 3005 |
| Census Tract | 320004 |
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