Contra Costa County property record for 643 Linden Ln, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,597 sqft · built 1959 |
| Lot Size | 0.138 acres (6,000 sqft) |
| Owner | Individual Name on Record |
| Last Sale | $360,000 (Aug 2011) |
| Tax Bill | $16,059 (2025) |
| Deeds & Mortgages | Sep 2026 Line of Credit Jan 2022 Transfer + 1 more |
| Flood Zone | Zone AO (high risk) |
| APN | 370-270-018-2 |
| Primary APN | 370-270-018-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,597 sqft Living Area |
| Gross Area | 2,058 sqft |
| 1st Floor Area | 1,597 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1959 |
|---|---|
| Effective Year Built | Effective 1975 |
| Architectural Style | Ranch |
| Exterior Material | Stucco |
| Roof Material | Wood Shingle |
| Lot Area | 6,000 sqft (0.138 acres) |
| Garage Type | Attached |
| Garage Area | 461 sqft |
| Parking Spaces | 2 Parking Spaces |
| Deck Area | Deck Area |
| Heating System | Forced Air with A/C |
|---|---|
| Heating Fuel | Gas |
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 643 LINDEN LN |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3930 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R1 |
| Legal Description | TRACT 2202 LOT 20 |
| Legal Subdivision | OXFORD GROVE |
| Legal Tract | 2202 |
| Legal Lot Number | 20 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 319001 |
Source: Contra Costa County records, as of September 14, 2026
Owner names and exact recorded amounts shown locked on this page are available instantly with a free trial.
| Owner of Record | Individual Name on Record |
|---|---|
| Mailing Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Date | Document |
|---|---|
| Sep 4, 2026 | Deed of Trust, Mortgage · Line of Credit PATELCO CREDIT UNION |
| Jan 19, 2022 | Affidavit of Death of Joint Tenant, Transfer PLACER TITLE COMPANY |
| Jan 19, 2022 | Intrafamily Transfer, Transfer · Conventional Mortgage PATELCO CU |
| Deed Names | Name on Deed |
|---|---|
| Last Sale | Aug 29, 2011 · Amount on Record |
| Deed Sale | Aug 29, 2011 · Amount on Record |
| Prior Sale | Aug 29, 2011 |
| Deed Document Number | 2011175613 |
| Last Transfer Date | Jan 11, 2022 |
| Transfer Doc | 0000011537 |
| Record Updated | Oct 29, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Sep 4, 2026 |
| Property Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000094148 |
| Instrument Date | Aug 28, 2026 |
| Instrument | 202694148 |
| Transaction Type | Mortgage |
| Record Updated | Sep 14, 2026 |
| Title Company | NONE LISTED ON DOCUMENT |
| Name | Verified Name |
|---|---|
| Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000094148, |
|---|---|
| Date | Sep 4, 2026 |
| Instrument | 202694148 |
| Name | PATELCO CREDIT UNION |
|---|
| Type | Line of Credit |
|---|---|
| Amount | Amount Recorded |
| Term | 299 Months |
| Due | Aug 28, 2051 |
| Max Rate | -1% |
|---|
| Document Type | Affidavit of Death of Joint Tenant |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 19, 2022 |
| Property Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000011536 |
| Map Reference | VOL 61 PG 8 |
| Instrument Date | Jan 11, 2022 |
| Instrument | 2022-011536 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | PLACER TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Joint Tenants |
| Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jan 19, 2022 |
| Property Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000011537 |
| Map Reference | VOL 61 PG 8 |
| Instrument Date | Jan 10, 2022 |
| Instrument | 2022-011537 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Title Company | PLACER TITLE COMPANY |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 643 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000011538 |
|---|---|
| Date | Jan 19, 2022 |
| Instrument | 2022-011538 |
| Name | PATELCO CU |
|---|---|
| Type | Credit Union |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Feb 1, 2052 |
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 | $679,320 (+2%) Land $398,910 Building $280,410 | |
| 2025 | $16,059.00 (+172.46%) | $666,001 (+53.24%) Land $391,089 Building $274,912 |
| 2023 | $5,894.00 (+1.6%) | $434,610 Land $217,305 Building $217,305 |
| 2022 | $5,801.00 |
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 AO high risk · sheet flow 1–3 ft |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Varies along the reach; see FIRM |
| Flood Insurance Requirement | Required federally backed loans |
| 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 62% of the US · lower than 77% of California |
|---|---|
| Wildfire Likelihood | 0.05% 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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