Contra Costa County property record for 320 Arroyo Dr, Martinez, CA 94553 · Last verified July 2026
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 1 ba · 1,435 sqft · built 1954 |
| Lot Size | 0.149 acres (6,500 sqft) |
| Owner | Individual Name on File |
| Last Sale | $655,000 (Feb 2025) |
| Tax Bill | $1,915 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 370-061-007-8 |
| Primary APN | 370-061-007-8 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 1 Bath |
| Total Rooms | 6 Rooms |
| Stories | 1 Story |
| Building Area | 1,435 sqft Living Area |
| 1st Floor Area | 1,435 sqft |
| Year Built | Built 1954 |
|---|---|
| Effective Year Built | Effective 1954 |
| Lot Area | 6,500 sqft (0.149 acres) |
| Street Address | 320 ARROYO DR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3808 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | MERRITHEW ESTATES #1 17 |
| Legal Subdivision | MERRITHEW ESTATES #1 |
| Legal Lot Number | 17 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 3 |
| Census Block | 3024 |
| Census Tract | 318000 |
Source: Contra Costa County records · APN 370-061-007-8
Assessment roll updated July 14, 2026 · Last verified July 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 File |
|---|---|
| Mailing Address | 320 ARROYO DR, MARTINEZ, CA 94553-3808 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Unmarried Man |
| Deed Names | Verified Name on Deed |
|---|---|
| Last Sale | Feb 25, 2025 · Amount on Record |
| Deed Sale | Feb 25, 2025 · Amount on Record |
| Deed Document Number | 202517219 |
| Prior Transfer Date | Jan 08, 2010 |
| Prior Transfer Doc | 0000004552 |
| Record Updated | Sep 20, 2026 |
Source: Contra Costa County records · Assessment roll updated July 14, 2026 · Last verified July 2026
| Type | Name |
|---|---|
| State | California |
| County | Contra Costa County |
| Municipality | Martinez City |
| Unified School District | Martinez Unified School District (KG - 12) |
Assessed value and assessed market value are set for property tax purposes, not market price estimates; both are a fraction of this property's market value.
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $82,133 (+2%) Land $27,847 Building $54,286 | |
| 2025 | $1,915.00 (+6.39%) | $80,523 (+4.04%) Land $27,301 Building $53,222 |
| 2023 | $1,800.00 (+1.24%) | $77,398 Land $26,242 Building $51,156 |
| 2022 | $1,778.00 |
Source: FEMA National Flood Hazard Layer, Contra Costa County (06013C), updated October 12, 2026 · FEMA OpenFEMA NFIP redacted claims and policies, census block group 060133180003, refreshed September 2026 · USDA Forest Service Wildfire Risk to Communities, 2nd edition (2024), fuels as of 2020 · Last verified October 2026
| FEMA Flood Zone | Zone X |
|---|---|
| Special Flood Hazard Area | No |
| Flood Hazard | Minimal |
| 500-Year Floodplain | No |
| Nearest Special Flood Hazard Area | Zone AO, within 500 ft |
| Flood Insurance Cost | Premium on Record median of 109 individual NFIP policies nearby |
| Nearby Flood Policies | 109 in force |
| Nearby Flood Claims | 32 (1980–2019) |
| Claims Outside the SFHA | 3 of 32 |
| Most Recent Claim | Feb 2019 |
| Claims By Storm |
|
| Wildfire Risk | High above 74% of the US · above 49% of California |
|---|---|
| Wildfire Likelihood | About 1 in 242 per year |
| Exposure | Direct burnable vegetation at the parcel |
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: FCC Broadband Data Collection, availability as of December 31, 2025 · Published October 2026 · based on 335 locations within about half a mile of this property
| Provider | Technology | Download / Upload (Mbps) |
|---|---|---|
| Xfinity | Cable | 2,000 / 250 |
| Radiate Holdings | Fiber | 1,500 / 1,500 |
| Unwired | Fixed Wireless | 300 / 25 |
| Verizon | Fixed Wireless | 300 / 20 |
| T-Mobile USA | Fixed Wireless | 100 / 20 |
| AT&T | DSL | 100 / 20 |
| Starlink | Satellite (low-earth orbit) | 280 / 30 |
May also be available at this address: Radiate Holdings. Availability varies by address; speeds are provider-advertised maximums, not measured.
5G and 4G LTE
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