Contra Costa County property record for 321 Greenway Dr, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 2 ba · 1,344 sqft · built 1967 |
| Lot Size | 0.165 acres (7,200 sqft) |
| Owner | 2 Individual Names on File |
| Tax Bill | $3,880 (2025) |
| Flood Zone | Zone X (minimal risk) |
| APN | 377-100-040-7 |
| Primary APN | 377-100-040-7 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 2 Baths |
| Total Rooms | 8 Rooms |
| Stories | 1 Story |
| Building Area | 1,344 sqft Living Area |
| Gross Area | 1,820 sqft |
| 1st Floor Area | 1,344 sqft |
| Fireplaces | 1 Fireplace |
| Fireplace | Fireplace |
| Year Built | Built 1967 |
|---|---|
| Effective Year Built | Effective 1968 |
| Architectural Style | Contemporary |
| Exterior Material | Stucco |
| Construction Type | Frame |
| Roof Material | Wood Shingle |
| Lot Area | 7,200 sqft (0.165 acres) |
| Lot Dimensions | 100 ft deep x 72 ft wide |
| Garage Type | Attached |
| Garage Area | 476 sqft |
| Parking Spaces | 2 Parking Spaces |
| Heating System | Gravity Furnace |
|---|---|
| Sewer | Municipal |
| Water Source | Commercial |
| Street Address | 321 GREENWAY DR |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3506 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Local Zoning Code | R6 |
| Legal Description | TRACT 3625 LOT 12 EX MR |
| Legal Subdivision | MORELLO TERRACE UNIT #2 |
| Legal Tract | 3625 |
| Legal Lot Number | 12 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 1 |
| Census Block | 1000 |
| Census Tract | 320003 |
321 Greenway Dr is owned and occupied by two individuals.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 321 GREENWAY DR, MARTINEZ, CA 94553-3506 |
| 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.
| Deed Names | 2 Names on Deed |
|---|---|
| Record Updated | Sep 20, 2026 |
The 2025 property tax bill for 321 Greenway Dr was $3,880 with a homeowner's exemption.
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 | $238,841 (+2%) Land $79,534 Building $159,307 | |
| 2025 | $3,880.00 Homeowner's exemption | $234,159 Land $77,975 Building $156,184 |
| 2023 | $3,603.00 (+3.42%) Homeowner's exemption | $225,069 Land $74,949 Building $150,120 |
| 2022 | $3,484.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 321 Greenway Dr in Zone X, an area of minimal flood risk, though there have been 1 flood claim nearby since 1986.
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 |
| Nearby Flood Policies | 2 in force |
| Nearby Flood Claims | 1 (1986) |
| Claims Outside the SFHA | 1 of 1 |
| Most Recent Claim | Feb 1986 · Severe Storms & Flooding |
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.
The area around 321 Greenway Dr has no burnable land within ember reach, so its wildfire risk is not rated.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Not rated no burnable land within ember reach |
|---|
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 | 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 403 locations within half a mile, as of December 31, 2025
| Provider | Max Down / Up (Mbps) |
|---|---|
| Xfinity Cable | 2,000 / 250 |
| Unwired Fixed Wireless | 300 / 25 |
| Verizon Fixed Wireless | 300 / 20 |
| AT&T DSL | 100 / 20 |
May also be available: Astound Broadband.
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