Alameda County property records for 30 addresses on Shamrock Way, Castro Valley, CA · Last verified October 2026
| Properties | 30 |
|---|---|
| Median Sale Price | $940,000 |
| Deeds and Mortgages on File | 44 |
| Median Price per Sqft | $746 |
| Owner Occupied | 90% |
| Median Annual Tax Bill | $7,139 |
| Median Year Built | 1959 |
| Median Ownership Tenure | 13 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4253 Shamrock Way |
3 bd · 2 ba · 1,199 sqft built 1958 · 0.134 acres | $540,000 Oct 2013 | $8,636 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4263 Shamrock Way |
3 bd · 1.5 ba · 1,199 sqft built 1958 · 0.122 acres | $680,000 Nov 2016 | $10,167 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4273 Shamrock Way |
3 bd · 1.5 ba · 1,220 sqft built 1958 · 0.121 acres | $165,000 May 1997 | $4,040 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4274 Shamrock Way |
3 bd · 1.5 ba · 1,068 sqft built 1959 · 0.117 acres | $500,000 Apr 2013 | $8,134 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4279 Shamrock Way |
3 bd · 4 ba · 1,855 sqft built 1959 · 0.137 acres | $5,254 2025 | Assessor + 6 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4280 Shamrock Way |
3 bd · 1.5 ba · 1,636 sqft built 1959 · 0.114 acres | $2,136 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4286 Shamrock Way |
4 bd · 2.5 ba · 1,706 sqft built 1959 · 0.114 acres | $240,000 Oct 1999 | $7,139 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4292 Shamrock Way |
3 bd · 1.5 ba · 1,500 sqft built 1959 · 0.114 acres | $688,000 Dec 2015 | $10,397 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4301 Shamrock Way |
3 bd · 1.5 ba · 1,163 sqft built 1959 · 0.137 acres | $5,783 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4302 Shamrock Way |
3 bd · 1.5 ba · 1,220 sqft built 1959 · 0.114 acres | $3,166 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4307 Shamrock Way |
3 bd · 1.5 ba · 1,220 sqft built 1959 · 0.126 acres | — Sep 2016 | $5,149 2025 | Assessor + 2 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4308 Shamrock Way |
3 bd · 2 ba · 1,060 sqft built 1959 · 0.114 acres | $190,000 Sep 1993 | $4,597 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4313 Shamrock Way |
3 bd · 1.5 ba · 1,636 sqft built 1959 · 0.239 acres | $210,000 Jun 1994 | $4,998 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4314 Shamrock Way |
3 bd · 1.5 ba · 1,220 sqft built 1959 · 0.114 acres | $1,475,000 Nov 2025 | $1,945 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4319 Shamrock Way |
3 bd · 1.5 ba · 1,199 sqft built 1959 · 0.117 acres | $1,080,000 Sep 2025 | $7,759 2025 | Assessor + 2 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4320 Shamrock Way |
3 bd · 2.5 ba · 1,810 sqft built 1959 · 0.143 acres | $350,000 Sep 2024 | $15,216 2025 | Assessor + 2 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4325 Shamrock Way |
3 bd · 1.5 ba · 1,145 sqft built 1959 · 0.123 acres | $855,000 Oct 2020 | $11,707 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4326 Shamrock Way |
3 bd · 1.5 ba · 1,145 sqft built 1959 · 0.123 acres | $1,010,000 Jun 2024 | $13,025 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4331 Shamrock Way |
3 bd · 1.5 ba · 1,145 sqft built 1959 · 0.133 acres | $526,000 Aug 2013 | $8,477 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4332 Shamrock Way |
3 bd · 1.5 ba · 1,145 sqft built 1959 · 0.126 acres | $175,000 Sep 1988 | $4,661 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4337 Shamrock Way |
3 bd · 1.5 ba · 2,076 sqft built 1940 · 0.144 acres | $205,000 Mar 1994 | $4,898 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4338 Shamrock Way |
3 bd · 2 ba · 1,592 sqft built 1964 · 0.114 acres | $660,000 Sep 2015 | $10,088 2025 | Assessor + 5 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4343 Shamrock Way |
3 bd · 2 ba · 1,658 sqft built 1991 · 0.115 acres | $312,000 Dec 1999 | $6,445 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4344 Shamrock Way |
3 bd · 2 ba · 1,444 sqft built 1960 · 0.128 acres | $425,000 Sep 2012 | $6,962 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4349 Shamrock Way |
3 bd · 2 ba · 1,491 sqft built 1963 · 0.119 acres | $363,500 Mar 2013 | $6,642 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4350 Shamrock Way |
3 bd · 2 ba · 1,470 sqft built 1961 · 0.14 acres | $571,000 Jun 2015 | $8,884 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4355 Shamrock Way |
4 bd · 3 ba · 2,303 sqft built 1964 · 0.148 acres | $4,909 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4356 Shamrock Way |
3 bd · 2 ba · 1,481 sqft built 1961 · 0.175 acres | $940,000 Jan 2025 | $12,303 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4361 Shamrock Way |
4 bd · 3 ba · 1,844 sqft built 1973 · 0.12 acres | $493,000 Nov 2010 | $8,322 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4362 Shamrock Way |
3 bd · 2.5 ba · 1,694 sqft built 1961 · 0.129 acres | $860,000 May 2018 | $12,333 2025 | Assessor + 6 Documents Updated Oct 2026 | Owner on File Owner Occupied |