Contra Costa County property records for 9 addresses on Blackrock Pl, Martinez, CA · Last verified August 2026
| Properties | 9 |
|---|---|
| Median Sale Price | $560,000 |
| Deeds and Mortgages on File | 17 |
| Median Price per Sqft | $340 |
| Owner Occupied | 78% |
| Median Annual Tax Bill | $7,803 |
| Median Year Built | 1985 |
| Median Ownership Tenure | 15 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 2.5 ba · 1,789 sqft · built 1985 · 0.059 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $819,000Jul 2025 | $8,8942025 | Amount on Record Jul 2020 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 1,332 sqft · built 1985 · 0.053 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $560,000Sep 2018 | $7,8032025 | Amount on Record Oct 2014 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 1,602 sqft · built 1985 · 0.064 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $311,000Aug 2011 | $5,3282025 | Amount on Record May 1996 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4 bd · 2.5 ba · 1,789 sqft · built 1985 · 0.074 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $565,000Jun 2017 | $8,2982025 | Amount on Record Jul 2015 | 1 Name on Record | Assessor + 4 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 1,602 sqft · built 1985 · 0.064 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $213,000Oct 1998 | $4,7012025 | Amount on Record Dec 1996 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3 bd · 2.5 ba · 1,332 sqft · built 1985 · 0.07 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $180,000Apr 1989 | $4,5862025 | —Jun 2021 | 1 Name on Record Owner Occupied | Assessor + 5 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 1,602 sqft · built 1985 · 0.07 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $226,000Jul 1991 | $5,3472025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3 bd · 2.5 ba · 1,602 sqft · built 1985 · 0.083 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $545,000Mar 2006 | $9,1512025 | —Jun 2016 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
3 bd · 2.5 ba · 1,602 sqft · built 1985 · 0.086 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $575,000Nov 2016 | $8,4282025 | Amount on Record Oct 2006 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |