Contra Costa County property record for 623 Linden Ln, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,393 sqft · built 1957 |
| Lot Size | 0.225 acres (9,800 sqft) |
| Owner | Individual Name on File |
| Tax Bill | $1,872 (2025) |
| Deeds & Mortgages | Nov 2025 Transfer |
| Flood Zone | Zone AO (high risk) |
| APN | 370-270-023-2 |
| Primary APN | 370-270-023-2 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 7 Rooms |
| Stories | 1 Story |
| Building Area | 1,393 sqft Living Area |
| 1st Floor Area | 1,393 sqft |
| Year Built | Built 1957 |
|---|---|
| Effective Year Built | Effective 1957 |
| Lot Area | 9,800 sqft (0.225 acres) |
| Garage Type | Attached |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Street Address | 623 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 15 & TR ADJ |
| Legal Subdivision | OXFORD GROVE |
| Legal Tract | 2202 |
| Legal Lot Number | 15 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1006 |
| Census Tract | 319001 |
623 Linden Ln is owned and occupied by an individual who acquired it in November 2025.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | Individual Name on File |
|---|---|
| Mailing Address | 623 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Deed Names | Name on Deed |
|---|---|
| Last Transfer Date | Nov 7, 2025 |
| Transfer Doc | 0000127261 |
| Record Updated | Sep 20, 2026 |
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Nov 13, 2025 |
| Property Address | 623 LINDEN LN, MARTINEZ, CA 94553-3930 |
| Document Number | 0000127262 |
| Map Reference | MB 61 PG 8 |
| Instrument Date | Nov 10, 2025 |
| Instrument | 2025- 127262 |
| Transaction Type | Transfer |
| Record Updated | Nov 26, 2025 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | No Consideration Stated |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 623 LINDEN LN, MARTINEZ, CA 94553-3930 |
The 2025 property tax bill for 623 Linden Ln was $1,872.
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 | $78,388 (+2%) Land $28,822 Building $49,566 | |
| 2025 | $1,872.00 | $76,852 Land $28,257 Building $48,595 |
| 2023 | $1,760.00 (+1.27%) | $73,869 Land $27,160 Building $46,709 |
| 2022 | $1,738.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 623 Linden Ln in Zone AO, a high-risk flood area; flood insurance is required for federally backed loans.
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 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 623 Linden Ln is moderate, ranking above 56% of the US, with a 0.1% annual chance of wildfire.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Moderate above 56% of the US · lower than 66% of California |
|---|---|
| Wildfire Likelihood | 0.1% annual chance |
| Exposure | Indirect within ember reach |
| Adjoins Burnable Land | Yes |
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 335 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Astound Broadband Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL | 100 / 20 |
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