Contra Costa County property record for 309 Tierney Pl, Martinez, CA 94553
| Property Type | Condominium |
|---|---|
| Details | 4 bd · 3.5 ba · 2,065 sqft · built 2016 |
| Lot Size | 0.023 acres (987 sqft) |
| Owner | 2 Individual Names on Record |
| Last Sale | $653,000 (Jun 2017) |
| Tax Bill | $9,606 (2025) |
| Deeds & Mortgages | Apr 2020 Mortgage |
| Flood Zone | Zone X (minimal risk) |
| APN | 161-590-015-4 |
| Primary APN | 161-590-015-4 |
|---|---|
| Alternative APN |
|
| Bedrooms | 4 Beds |
|---|---|
| Full Baths | 3.5 Baths |
| Half Baths | 1 Half Bath |
| Total Rooms | 8 Rooms |
| Stories | 2 Stories |
| Building Area | 2,065 sqft Living Area |
| 1st Floor Area | 781 sqft |
| 2nd Floor Area | 892 sqft |
| Basement Area | 392 sqft |
| Year Built | Built 2016 |
|---|---|
| Effective Year Built | Effective 2017 |
| Architectural Style | Condo/Apartment |
| Lot Area | 987 sqft (0.023 acres) |
| Garage Type | Attached |
| Garage Area | 474 sqft |
| Parking Spaces | 2 Parking Spaces |
| Cooling System | Central |
|---|
| Street Address | 309 TIERNEY PL |
|---|---|
| City | MARTINEZ |
| State | CA |
| Zip | 94553-4435 |
| Property Category | Residential |
| Property Type | Residential > Condominium / Townhouse > Condominium |
| Legal Description | T9025 L1 B5 U15 |
| Legal Subdivision | SUBDIVISION 9025 |
| Legal Tract | 9025 |
| Jurisdiction | CONTRA COSTA CA |
| Township / Civil Division | CENTRAL CONTRA COSTA |
| Census Block Group | 4 |
| Census Block | 4014 |
| Census Tract | 320004 |
Source: Contra Costa County records, as of July 14, 2026
Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.
| Owner of Record | 2 Individual Names on Record |
|---|---|
| Mailing Address | 309 TIERNEY PL, MARTINEZ, CA 94553-4435 |
| Occupancy | Owner Occupied |
| Owner Type | Individual |
| Vesting | Community Property |
| Deed Names | 2 Names on Deed |
|---|---|
| Last Sale | Jun 8, 2017 · Amount on Record |
| Deed Sale | Jun 8, 2017 · Amount on Record |
| Deed Document Number | 2017101931 |
| Record Updated | Sep 20, 2026 |
| Document Type | Deed of Trust |
|---|---|
| Jurisdiction | CONTRA COSTA CA |
| Property Address | 309 TIERNEY PL, MARTINEZ, CA 94553-4435 |
| Transaction Type | Mortgage |
| Record Updated | Nov 3, 2022 |
| Title Company | STEWART TITLE OF CALIFORNIA |
| Name | Verified Name |
|---|
| Document Number | 0000065026 |
|---|---|
| Date | Apr 6, 2020 |
| Instrument | 2020-065026 |
| Name | COMMERCE HOME MORTGAGE LLC |
|---|---|
| Type | Mortgage Company |
| Address | IRVINE, CA 92606 |
| Type | FHA Mortgage |
|---|---|
| Amount | Amount Recorded |
| Term | 360 Months |
| Due | Apr 1, 2050 |
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 | Mount Diablo Unified School District (KG - 12) |
| Year | Tax Bill | Assessed Value |
|---|---|---|
| 2026 | $772,893 (+2%) Land $426,163 Building $346,730 | |
| 2025 | $9,606.00 (+4.62%) Homeowner's exemption | $757,739 (+4.04%) Land $417,807 Building $339,932 |
| 2023 | $9,182.00 (+1.58%) Homeowner's exemption | $728,317 Land $401,584 Building $326,733 |
| 2022 | $9,039.00 |
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
| 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.
Source: USDA Forest Service Wildfire Risk to Communities (2nd edition), as of 2024
| Wildfire Risk | Low lower than 96% of the US · lower than 97.4% of California |
|---|---|
| Wildfire Likelihood | Under 0.01% annual chance |
| Exposure | None beyond 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 334 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.
5G (outdoors only) and 4G LTE
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