Contra Costa County property records for 23 addresses on Westaire Blvd, Martinez, CA · Last verified October 2026
| Properties | 23 |
|---|---|
| Median Sale Price | $948,000 |
| Deeds and Mortgages on File | 45 |
| Median Price per Sqft | $472 |
| Owner Occupied | 87% |
| Median Annual Tax Bill | $10,118 |
| Median Year Built | 1997 |
| Median Ownership Tenure | 11 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
322 Westaire Blvd |
built 1994 · 4.42 acres | — Apr 1992 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
344 Westaire Blvd |
3 bd · 2.5 ba · 1,904 sqft built 1995 · 0.14 acres | $259,000 Jun 1998 | $5,981 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
346 Westaire Blvd |
3 bd · 2.5 ba · 2,044 sqft built 1995 · 0.137 acres | $935,000 Feb 2026 | $7,979 2025 | Assessor + 4 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
348 Westaire Blvd |
4 bd · 2.5 ba · 2,352 sqft built 1995 · 0.14 acres | $735,000 Sep 2015 | $11,340 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
350 Westaire Blvd |
5 bd · 3 ba · 2,531 sqft built 1995 · 0.137 acres | $471,500 Dec 2012 | $8,026 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
502 Westaire Blvd |
3 bd · 2.5 ba · 1,904 sqft built 1997 · 0.094 acres | $228,500 Mar 1997 | $7,970 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
504 Westaire Blvd |
4 bd · 2.5 ba · 2,156 sqft built 1997 · 0.084 acres | $709,500 Jul 2016 | $10,867 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
506 Westaire Blvd |
4 bd · 2.5 ba · 2,352 sqft built 1997 · 0.087 acres | $728,000 Jan 2016 | $11,235 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
508 Westaire Blvd |
5 bd · 3.5 ba · 2,708 sqft built 1997 · 0.101 acres | $948,000 Oct 2021 | $13,010 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
510 Westaire Blvd |
5 bd · 3 ba · 2,509 sqft built 1997 · 0.133 acres | $502,000 May 2002 | $10,185 2025 | Assessor + 3 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
511 Westaire Blvd |
4 bd · 2.5 ba · 2,164 sqft built 1997 · 0.101 acres | — Apr 2007 | $5,804 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
512 Westaire Blvd |
5 bd · 3 ba · 2,708 sqft built 1997 · 0.119 acres | $259,500 Nov 1996 | $6,170 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
513 Westaire Blvd |
2 bd · 2.5 ba · 1,904 sqft built 1997 · 0.087 acres | $550,000 Jul 2004 | $10,118 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
514 Westaire Blvd |
3 bd · 2.5 ba · 2,044 sqft built 1997 · 0.094 acres | $993,000 Jun 2026 | $10,789 2025 | Assessor + 4 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
515 Westaire Blvd |
3 bd · 2.5 ba · 2,044 sqft built 1997 · 0.084 acres | $200,000 Apr 2007 | $8,301 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
516 Westaire Blvd |
4 bd · 2.5 ba · 2,164 sqft built 1997 · 0.114 acres | $719,000 May 2016 | $11,119 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
517 Westaire Blvd |
3 bd · 2.5 ba · 1,904 sqft built 1997 · 0.094 acres | $670,000 May 2017 | $10,329 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
519 Westaire Blvd |
3 bd · 2.5 ba · 2,044 sqft built 1997 · 0.091 acres | $975,000 Mar 2022 | $9,755 2025 | Assessor + 8 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
521 Westaire Blvd |
4 bd · 2.5 ba · 2,044 sqft built 1997 · 0.084 acres | $400,000 May 2002 | $8,056 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
523 Westaire Blvd |
3 bd · 2.5 ba · 1,904 sqft built 1997 · 0.087 acres | $900,000 Jun 2021 | $12,636 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
525 Westaire Blvd |
3 bd · 2.5 ba · 2,044 sqft built 1997 · 0.091 acres | $602,000 Jun 2015 | $9,613 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
527 Westaire Blvd |
4 bd · 3 ba · 2,415 sqft built 1997 · 0.101 acres | $458,000 Nov 2008 | $8,041 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
529 Westaire Blvd |
4 bd · 2.5 ba · 2,044 sqft built 1997 · 0.112 acres | $975,000 Oct 2021 | $11,755 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |