Contra Costa County property record for 50 Arthur Rd, Martinez, CA 94553
| Property Type | Apartments (5+ Units) |
|---|---|
| Details | 16,928 sqft · built 1987 |
| Lot Size | 1.03 acres (45,302 sqft) |
| Owner | 2 Company Names on File |
| Last Sale | $5,800,000 (Jul 2023) |
| Tax Bill | $84,185 (2025) |
| Deeds & Mortgages | Jul 2023 Sale & Construction Loan Mar 2020 Mortgage + 1 more |
| Flood Zone | Zone A (high risk) |
| APN | 380-180-034-7 |
| Primary APN | 380-180-034-7 |
|---|---|
| Alternative APN |
|
| Total Rooms | 20 Rooms |
|---|---|
| Stories | 1 Story |
| Building Area | 16,928 sqft Living Area |
| Gross Area | 5,170 sqft |
| 1st Floor Area | 5,170 sqft |
| Year Built | Built 1987 |
|---|---|
| Effective Year Built | Effective 1987 |
| Exterior Material | Stucco |
| Roof Type | Gable |
| Roof Material | Composition Shingle |
| Lot Area | 45,302 sqft |
| Garage Type | Carport |
| Garage Area | 4,700 sqft |
| Carport | Carport |
| Carport Area | 4,700 sqft |
| Heating System | Heat Pump |
|---|
| Street Address | 50 ARTHUR RD |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-2243 |
| Property Category | Residential |
| Property Type | Residential > Multi-Unit > Apartments (5+ Units) |
| Local Zoning Code | M29 |
| Legal Description | POR RO LAS JUNTAS |
| Legal Subdivision | LAS JUNTAS RHO |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2001 |
| Census Tract | 320001 |
Source: Contra Costa County assessment roll, 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 Company Names on File |
|---|---|
| Mailing Address | 1300 K ST, MODESTO, CA 95354-0928 |
| Owner Type | Company |
| Date | Document |
|---|---|
| Jul 27, 2023 | Grant Deed, Construction Loan · Construction Mortgage EXCHANGE BANK |
| Mar 19, 2020 | Deed of Trust, Mortgage · Commercial Mortgage BANNER BANK |
| Oct 10, 2022 | Intrafamily Transfer, Transfer |
| Deed Names | 2 Verified Names on Deed |
|---|---|
| Last Sale | Jul 27, 2023 · Amount on Record |
| Deed Sale | Jul 27, 2023 · Amount on Record |
| Prior Sale | Nov 22, 2005 · Amount on Record |
| Deed Document Number | 202372033 |
| Prior Transfer Date | Aug 24, 2012 |
| Prior Transfer Doc | 0000208343 |
| Record Updated | Sep 20, 2026 |
| Document Type | Grant Deed |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Jul 27, 2023 |
| Property Address | 50 ARTHUR RD, MARTINEZ, CA 94553-2243 |
| Document Number | 0000072033 |
| Instrument Date | Jul 20, 2023 |
| Instrument | 2023-072033 |
| Transaction Type | Construction Loan |
| Record Updated | Aug 8, 2023 |
| Title Company | FIDELITY NATIONAL TITLE, FIDELITY NATIONAL TITLE CO |
| Amount | Amount Recorded |
|---|---|
| Downpayment | Downpayment on File |
| Loan-to-Value (LTV) | LTV on Record |
| Tax | $0.00 |
| Amount Accuracy | Rounded by County |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Relationship | Tenants in Common |
| Address | 1300 K ST, MODESTO, CA 95354-0928 |
| Document Number | 0000072034 |
|---|---|
| Date | Jul 27, 2023 |
| Instrument | 2023-072034 |
| Name | EXCHANGE BANK |
|---|---|
| Type | Bank |
| Type | Construction Mortgage |
|---|---|
| Amount | Amount Recorded |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 50 ARTHUR RD, MARTINEZ, CA 94553-2243 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | FIDELITY NATIONAL TITLE CO |
| Name | Verified Name |
|---|
| Document Number | 0000053917 |
|---|---|
| Date | Mar 19, 2020 |
| Instrument | 2020-053917 |
| Name | BANNER BANK |
|---|---|
| Type | Bank |
| Address | SANTA MONICA, CA 90403 |
| Type | Commercial Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 361 Months |
| Due | Apr 1, 2050 |
| Rate Type | Adjustable Rate |
|---|
| Document Type | Intrafamily Transfer |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Recording Date | Oct 10, 2022 |
| Property Address | 50 ARTHUR RD, MARTINEZ, CA 94553-2243 |
| Document Number | 0000151785 |
| Instrument Date | Oct 5, 2022 |
| Instrument | 2022-151785 |
| Transaction Type | Transfer |
| Record Updated | Nov 3, 2022 |
| Tax | $0.00 |
|---|---|
| Amount Accuracy | Transfer Tax Exempt |
| Additional |
|
| Name | Verified Name |
|---|
| Name | Verified Name |
|---|---|
| Address | 909 E GREEN ST, PASADENA, CA 91106-2906 |
Source: Contra Costa County assessment roll, as of July 14, 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Unified School District | Martinez Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $6,034,320 (+2%) Land $2,288,880 Building $3,745,440 | |
| 2025 | $84,185.00 (+71.63%) | $5,916,000 (+96.01%) Land $2,244,000 Building $3,672,000 |
| 2023 | $49,051.00 (+3.64%) | $3,018,201 Land $1,834,595 Building $1,183,606 |
| 2022 | $47,327.00 |
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 A high risk |
|---|---|
| 100-Year Floodplain | Yes 1% annual chance |
| Floodway | No |
| Base Flood Elevation | Not determined for this zone |
| Flood Insurance Requirement | Required federally backed loans |
| Flood Insurance Cost | Premium on Record median of 22 policies |
| Community Rating System | Class 6 (20% premium discount) |
| Nearby Flood Policies | 22 in force |
| Nearby Flood Claims | 11 (1986–2022) |
| Claims Outside the SFHA | 2 of 11 |
| Most Recent Claim | Dec 2022 · Severe Winter Storms, Flooding, Landslides, And Mudslides |
| Claims by Event |
|
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 99.1% of the US · lower than 99.2% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond ember reach |
Source: EPA Safe Drinking Water Information System, as of September 2026
| Water System | CONTRA COSTA WATER DISTRICT serves 210,500 people · EPA ID CA0710003 |
|---|---|
| Water Source | Surface water |
| Last State Inspection | Jan 2022 |
| Lead | Under 1 ppb (2026–2028) 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 208 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Radiate Holdings Fiber · Cable in parts of the area | 1,500 / 1,500 |
| Unwired Fixed Wireless | 300 / 25 |
| T-Mobile USA Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
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