Contra Costa County property record for 321 Northpark Ct, Martinez, CA 94553
| Property Type | Single Family Home |
|---|---|
| Details | 3 bd · 3.5 ba · 2,152 sqft · built 2014 |
| Lot Size | 0.046 acres (2,010 sqft) |
| Owner | 2 Individual Names on File |
| Last Sale | $595,500 (Apr 2015) |
| Tax Bill | $9,515 (2025) |
| Deeds & Mortgages | Jan 2021 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 376-320-004-9 |
| Primary APN | 376-320-004-9 |
|---|---|
| Alternative APN |
|
| Bedrooms | 3 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 9 Rooms |
| Stories | 2 Stories |
| Building Area | 2,152 sqft Living Area |
| 1st Floor Area | 584 sqft |
| 2nd Floor Area | 1,050 sqft |
| Basement Area | 518 sqft |
| Year Built | Built 2014 |
|---|---|
| Effective Year Built | Effective 2014 |
| Architectural Style | Cluster |
| Lot Area | 2,010 sqft (0.046 acres) |
| Garage Type | Attached |
| Garage Area | 462 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 321 NORTHPARK CT |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-3721 |
| Property Category | Residential |
| Property Type | Residential > Single Family > Home |
| Legal Description | T9089 L4 |
| Legal Subdivision | SUBDIVISION 9089 |
| Legal Tract | 9089 |
| Legal Lot Number | 4 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 2 |
| Census Block | 2025 |
| Census Tract | 319001 |
321 Northpark Ct is owned and occupied by two individuals who bought it in April 2015.
Source: Contra Costa County records, as of July 14, 2026
| Owner of Record | 2 Individual Names on File |
|---|---|
| Mailing Address | 321 NORTHPARK CT, MARTINEZ, CA 94553-3721 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
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 |
|---|---|
| Last Sale | Apr 7, 2015 · Amount on File |
| Deed Sale | Apr 7, 2015 · Amount on File |
| Deed Document Number | 201564505 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 321 NORTHPARK CT, MARTINEZ, CA 94553-3721 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | SOLIDIFI TITLE & CLOSING |
| Name | Verified Name |
|---|---|
| Address | 321 NORTHPARK CT, MARTINEZ, CA 94553-3721 |
| Document Number | 0000020399 |
|---|---|
| Date | Jan 22, 2021 |
| Instrument | 2021-020399 |
| Name | AMERISAVE MORTGAGE CORP |
|---|---|
| Type | Mortgage Company |
| Address | ATLANTA, GA 30305 |
| Type | Conventional Mortgage |
|---|---|
| Amount | Amount on Record |
| Term | 301 Months |
| Due | Feb 1, 2046 |
The 2025 property tax bill for 321 Northpark Ct was $9,515 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 | $729,514 (+2%) Land $337,112 Building $392,402 | |
| 2025 | $9,515.00 Homeowner's exemption | $715,210 Land $330,502 Building $384,708 |
| 2023 | $8,893.00 (+2.43%) Homeowner's exemption | $687,439 Land $317,669 Building $369,770 |
| 2022 | $8,682.00 |
Assessed value is set for property tax purposes and is not a market price estimate.
FEMA maps place 321 Northpark Ct in Zone X, an area of minimal flood risk.
Source: FEMA National Flood Hazard Layer, effective October 12, 2026
| FEMA Flood Zone | Zone X minimal risk |
|---|---|
| Flood Insurance Requirement | Not required lenders may require it |
Values are read at the parcel center point; lenders make the official flood determination.
The area around 321 Northpark Ct 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 | 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 589 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 |
| T-Mobile Fixed Wireless | 100 / 20 |
| AT&T DSL · Fiber in parts of the area | 100 / 20 |
May also be available: Astound Broadband.
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