Contra Costa County property record for 114 Williamson Ct, Martinez, CA 94553 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2.5 ba · 1,821 sqft · built 1995 |
| Lot Size | 0.126 acres (5,500 sqft) |
| Owner | Company Name on File |
| Last Sale | $275,000 (Jan 2000) |
| Tax Bill | $6,361 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 161-291-011-5 |
| Primary APN | 161-291-011-5 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 1,821 sqft Living Area |
| 1st Floor Area | 837 sqft |
| 2nd Floor Area | 984 sqft |
| Year Built | Built 1995 |
|---|---|
| Effective Year Built | Effective 1997 |
| Lot Area | 5,500 sqft (0.126 acres) |
| Garage Type | Attached |
| Garage Area | 410 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 114 WILLIAMSON CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4194 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T7586 L4 |
| Legal Subdivision | CREEKSIDE COLLECTION AT SHADOWBROOK |
| Legal Tract | 7586 |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3005 |
| Census Tract | 320004 |
Source: Contra Costa County records · APN 161-291-011-5
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 | Company Name on File |
|---|---|
| Mailing Address | 2851 ROCKRIDGE DR, PLEASANT HILL, CA 94523-1610 |
| Owner Type | Company |
| Vesting | Trust |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Jan 25, 2000 · Amount on Record |
| Deed Sale | Jan 25, 2000 · Amount on Record |
| Prior Sale | Aug 21, 1996 · Amount on Record |
| Deed Document Number | 200015262 |
| Last Transfer Date | Jan 06, 2010 |
| Transfer Doc | 0000007978 |
| Record Updated | Sep 20, 2026 |
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 | $431,097 (+2%) Land $125,405 Building $305,692 | |
| 2025 | $6,361.00 (+4.69%) | $422,646 (+4.04%) Land $122,947 Building $299,699 |
| 2023 | $6,076.00 (+1.88%) | $406,236 Land $118,174 Building $288,062 |
| 2022 | $5,964.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133200043, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearby Flood Claims | 1 (1979) |
| Most Recent Claim | Oct 1979, rainfall accumulation |
| 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; flood claims are located to the census block group, not this parcel; lenders make the official flood determination.
Source: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 454 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Unwired | Fixed Wireless | 300 / 25 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
May also be available at this address: AT&T, Verizon, Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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