Contra Costa County property record for 307 Kingston Ave, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,004 sqft · built 1955 |
| Lot Size | 0.193 acres (8,424 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $4,733 (2025) |
| Deeds & Mortgages | Mar 2026 Mortgage Feb 2024 Second Mortgage + 3 more |
| Flood Zone | Zone X (minimal risk) |
| APN | 376-141-004-6 |
| Primary APN | 376-141-004-6 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,004 sqft Living Area |
| Gross Area | 1,213 sqft |
| 1st Floor Area | 1,004 sqft |
| Year Built | Built 1955 |
|---|---|
| Effective Year Built | Effective 1955 |
| Architectural Style | Contemporary |
| Exterior Material | Wood Siding |
| Construction Type | Frame |
| Roof Material | Tar & Gravel |
| Lot Area | 8,424 sqft (0.193 acres) |
| Garage Type | Attached |
| Garage Area | 209 sqft |
| Parking Spaces | 1 Parking Space |
| Deck Area | Deck Area |
| Heating System | Forced Air with A/C |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 307 KINGSTON AVE |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4015 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | ALHAMBRA OAKS #5 LOT 231 |
| Legal Subdivision | ALHAMBRA OAKS 05 |
| Legal Lot Number | 231 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1003 |
| Census Tract | 319001 |
307 Kingston Ave is owned and occupied by two individuals who acquired it in October 2020.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Joint Tenants |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Date | Document |
|---|---|
| Mar 20, 2026 | Deed of Trust, Mortgage · Conventional Mortgage EMORTGAGE FUNDING LLC |
| Feb 23, 2024 | Deed of Trust, Mortgage · Stand-Alone Second Mortgage ROCKET MORTGAGE LLC |
| Oct 26, 2020 | Correction Deed · Conventional Mortgage CMG MORTGAGE INC |
| Jan 10, 2020 | Deed of Trust, Mortgage · Conventional Mortgage LOANDEPOT.COM LLC |
| Dec 11, 2017 | Quit Claim Deed, Transfer · Conventional Mortgage LOANDEPOT.COM LLC |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Transfer Date | Oct 19, 2020 |
| Transfer Doc | 0000250137 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Transaction Type | Mortgage |
| Record Updated | Mar 31, 2026 |
| Name | Verified Name |
|---|---|
| Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000027758 |
|---|---|
| Date | Mar 20, 2026 |
| Instrument | 2026- 027758 |
| Name | EMORTGAGE FUNDING LLC |
|---|---|
| Type | Mortgage Company |
| Address | 320 E BIG BEAVER RD STE 400, TROY, MI 48083 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Apr 1, 2056 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 5.22% |
| Adjustable | Adjustable Rate Rider |
| Type Change Date | Apr 1, 2033 |
| Change Frequency | 6 Months |
| Min Rate At Change | 2.75% |
| Max Rate At Change | 10.2% |
| Index | Other |
| Max Rate | 10.2% |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Transaction Type | Mortgage |
| Record Updated | Mar 4, 2024 |
| Name | Verified Name |
|---|---|
| Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000016877 |
|---|---|
| Date | Feb 23, 2024 |
| Instrument | 2024-016877 |
| Name | ROCKET MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | DETROIT, MI 48226 |
| Type | Stand-Alone Second Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 241 Months |
| Due | Mar 1, 2044 |
| Document Type | Correction Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 26, 2020 |
| Property Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000250137 |
| Map Reference | MB 48 PG 23 |
| Instrument Date | Oct 19, 2020 |
| Instrument | 2020-250137 |
| Record Updated | Nov 3, 2022 |
| Title Company | PLACER TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000250138 |
|---|---|
| Date | Oct 26, 2020 |
| Instrument | 2020-250138 |
| Name | CMG MORTGAGE INC |
|---|---|
| Type | Mortgage Company |
| Address | SAN RAMON, CA 94583 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 361 Months |
| Due | Nov 1, 2050 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000019299 |
| Instrument Date | Jan 10, 2020 |
| Transaction Type | Mortgage |
| Record Updated | Feb 11, 2020 |
| Title Company | AMERICAN COAST TITLE COMPANY, AMERICAN COAST TITLE CO. |
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 307 KINGSTON AVE MARTINEZ CA 945534015, MARTINEZ, CA 94553-4015 |
| Document Number | 0000019299 |
|---|---|
| Date | Jan 31, 2020 |
| Instrument | 19299 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Jan 30, 2050 |
| Document Type | Quit Claim Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Dec 11, 2017 |
| Property Address | 307 KINGSTON AVE, MARTINEZ, CA 94553-4015 |
| Document Number | 0000231416 |
| Instrument Date | Oct 27, 2017 |
| Instrument | 231416 |
| Transaction Type | Transfer |
| Record Updated | Jan 3, 2018 |
| Title Company | WFG LENDER SERVICES |
| Tax | $0.00 |
|---|---|
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Husband and Wife |
| Address | 307 KINGSTON AVE MARTINEZ CA 945534015, MARTINEZ, CA 94553-4015 |
| Document Number | 231417 |
|---|---|
| Date | Dec 11, 2017 |
| Instrument | 231417 |
| Name | LOANDEPOT.COM LLC |
|---|---|
| Type | Funding / Finance Company |
| Address | FOOTHILL RANCH, CA 92610 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 360 Months |
| Due | Dec 10, 2047 |
| Rate Type | Adjustable Rate |
|---|---|
| Rate | 3.62% |
The 2025 property tax bill for 307 Kingston Ave was $4,733.
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 | $305,777 (+2%) Land $204,828 Building $100,949 | |
| 2025 | $4,733.00 | $299,782 Land $200,812 Building $98,970 |
| 2023 | $4,408.00 (+3.09%) | $288,143 Land $193,015 Building $95,128 |
| 2022 | $4,276.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 307 Kingston Ave in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 2023.
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 File 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.
Wildfire risk around 307 Kingston Ave is low, with a 0.02% annual chance of wildfire.
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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