Contra Costa County property record for 340 Kingston Ave, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 4 bd · 2 ba · 1,537 sqft · built 1966 |
| Lot Size | 0.235 acres (10,240 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $810,000 (May 2021) |
| Tax Bill | $10,193 (2025) |
| Deeds & Mortgages | May 2021 Sale & Mortgage Jan 2019 Transfer |
| Flood Zone | Zone X (minimal risk) |
| APN | 376-241-014-4 |
| Primary APN | 376-241-014-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,537 sqft Living Area |
| 1st Floor Area | 1,537 sqft |
| Year Built | Built 1966 |
|---|---|
| Effective Year Built | Effective 1975 |
| Lot Area | 10,240 sqft (0.235 acres) |
| Garage Type | Attached |
| Garage Area | 492 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 340 KINGSTON AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4048 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R16 |
| Legal Description | TRACT 2924 LOT 26 |
| Legal Subdivision | 2924 ALHAMBRA OAKS |
| Legal Tract | 2924 |
| Legal Lot Number | 26 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1002 |
| Census Tract | 319001 |
Source: Contra Costa County records, 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 | 2 Individual Names on Record |
|---|---|
| Mailing Address | 340 KINGSTON AVE, MARTINEZ, CA 94553-4048 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| May 10, 2021 | Grant Deed, Transfer · Conventional Mortgage CROSSCOUNTRY MORTGAGE LLC |
| Jan 11, 2019 | Quit Claim Deed, Transfer Quitclaim |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | May 10, 2021 · Amount on Record |
| Deed Sale | May 10, 2021 · Amount on Record |
| Prior Sale | Jan 10, 2008 · Amount on Record |
| Deed Document Number | 2021139187 |
| Prior Transfer Date | Jan 11, 2019 |
| Prior Transfer Doc | 0000004415 |
| Record Updated | Oct 29, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | May 10, 2021 |
| Property Address | 340 KINGSTON AVE, MARTINEZ, CA 94553-4048 |
| Document Number | 0000139187 |
| Map Reference | MB 92 PG 38&39 |
| Instrument Date | Apr 27, 2021 |
| Instrument | 2021-139187 |
| Transaction Type | Transfer |
| Record Updated | Jun 7, 2023 |
| Title Company | OLD REPUBLIC TITLE COMPANY |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on Record |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Family Trust |
| Address | 340 KINGSTON AVE, MARTINEZ, CA 94553-4048 |
| Document Number | 0000139188 |
|---|---|
| Date | May 10, 2021 |
| Instrument | 2021-139188 |
| Name | CROSSCOUNTRY MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Jun 1, 2051 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 11, 2019 |
| Property Address | 340 KINGSTON AVE, MARTINEZ, CA 94553-4048 |
| Document Number | 0000004415 |
| Instrument Date | Jan 11, 2019 |
| Instrument | 4415 |
| Transaction Type | Transfer |
| Record Updated | Jan 23, 2019 |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Personal Trust |
| Address | 340 KINGSTON AVE MARTINEZ CA 945534048, MARTINEZ, CA 94553-4048 |
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 | $786,000 (-) Land $485,186 Building $300,814 | |
| 2025 | $10,193.00 (+6.15%) | $786,000 (+3.69%) Land $485,186 Building $300,814 |
| 2023 | $9,602.00 (-7.66%) | $758,000 Land $468,000 Building $290,000 |
| 2022 | $10,398.00 |
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 |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
| Flood Insurance Cost | Premium on Record median of 38 policies |
| Nearby Flood Policies | 38 in force |
| Nearby Flood Claims | 1 (2023) |
| Most Recent Claim | Jan 2023 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
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 | Low lower than 80% of the US · lower than 88% of California |
|---|---|
| Wildfire Likelihood | 0.02% 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 422 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Fiber | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T Fixed Wireless · DSL · Fiber in parts of the area | 100 / 20 |
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