Alameda County property records for 27 addresses on Kathleen Ave, Castro Valley, CA · Last verified October 2026
| Properties | 27 |
|---|---|
| Median Sale Price | $930,000 |
| Deeds and Mortgages on File | 61 |
| Median Price per Sqft | $831 |
| Owner Occupied | 85% |
| Median Annual Tax Bill | $7,612 |
| Median Year Built | 1949 |
| Median Ownership Tenure | 6 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4805 Kathleen Ave |
1 bd · 1 ba · 902 sqft built 1948 · 0.118 acres | $750,000 Jan 2023 | $9,994 2025 | Assessor + 5 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4816 Kathleen Ave |
0.042 acres | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4817 Kathleen Ave |
3 bd · 2 ba · 1,192 sqft built 1948 · 0.146 acres | $999,000 Oct 2025 | $2,127 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4822 Kathleen Ave |
0.003 acres | $907,000 Dec 2023 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4823 Kathleen Ave |
5 bd · 3.5 ba · 3,075 sqft built 1945 · 0.137 acres | $980,000 Jan 2020 | $13,516 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4828 Kathleen Ave |
3 bd · 2 ba · 1,544 sqft built 1949 · 0.125 acres | $1,225,000 Feb 2025 | $3,603 2025 | Assessor + 4 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4829 Kathleen Ave |
3 bd · 1 ba · 968 sqft built 1948 · 0.139 acres | $1,771 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4834 Kathleen Ave |
1 bd · 1 ba · 827 sqft built 1949 · 0.122 acres | $747,500 Mar 2026 | $1,555 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4835 Kathleen Ave |
3 bd · 1 ba · 1,028 sqft built 1948 · 0.131 acres | $930,000 May 2026 | $7,378 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4840 Kathleen Ave |
6 bd · 3 ba · 2,496 sqft built 1949 · 0.118 acres | $167,000 Apr 1997 | $7,073 2025 | Assessor + 5 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4841 Kathleen Ave |
3 bd · 2 ba · 1,391 sqft built 1948 · 0.134 acres | $427,000 Jul 2003 | $8,027 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4846 Kathleen Ave |
2 bd · 1 ba · 820 sqft built 1949 · 0.119 acres | $705,000 May 2020 | $9,884 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4847 Kathleen Ave |
3 bd · 1 ba · 1,028 sqft built 1948 · 0.133 acres | $219,000 Mar 1999 | $4,920 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4852 Kathleen Ave |
5 bd · 2 ba · 1,674 sqft built 1949 · 0.124 acres | $4,548 2025 | Assessor + 1 Document Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4853 Kathleen Ave |
3 bd · 2 ba · 1,837 sqft built 1948 · 0.13 acres | $910,000 Aug 2023 | $12,557 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4958 Kathleen Ave |
4 bd · 2 ba · 1,524 sqft built 1954 · 0.143 acres | $455,000 May 2012 | $7,612 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4959 Kathleen Ave |
3 bd · 1.5 ba · 1,245 sqft built 1954 · 0.131 acres | $450,000 Oct 2022 | $12,221 2025 | Assessor + 4 Documents Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4964 Kathleen Ave |
5 bd · 3 ba · 2,213 sqft built 1954 · 0.132 acres | $575,000 Oct 2013 | $10,158 2025 | Assessor + 7 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4965 Kathleen Ave |
5 bd · 2 ba · 1,245 sqft built 1954 · 0.14 acres | $332,500 Apr 2002 | $6,665 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4970 Kathleen Ave |
3 bd · 1.5 ba · 1,313 sqft built 1954 · 0.132 acres | $3,393 2025 | Assessor + 5 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4971 Kathleen Ave |
4 bd · 2 ba · 1,707 sqft built 1954 · 0.14 acres | $822,000 Dec 2018 | $11,606 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4976 Kathleen Ave |
3 bd · 1.5 ba · 1,280 sqft built 1954 · 0.132 acres | $401,000 Jul 2012 | $6,693 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4977 Kathleen Ave |
3 bd · 1.5 ba · 1,603 sqft built 1954 · 0.14 acres | $625,000 Feb 2007 | $10,667 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4982 Kathleen Ave |
4 bd · 2 ba · 1,852 sqft built 1955 · 0.132 acres | $1,169,000 Sep 2021 | $15,505 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4983 Kathleen Ave |
3 bd · 2 ba · 1,382 sqft built 1955 · 0.128 acres | $1,871 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4988 Kathleen Ave |
3 bd · 1.5 ba · 1,296 sqft built 1954 · 0.154 acres | $1,285,000 Oct 2021 | $16,877 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
4989 Kathleen Ave |
4 bd · 3.5 ba · 2,760 sqft built 1954 · 0.153 acres | $8,151 2025 | Assessor + 2 Documents Updated Aug 2026 | Owner on File Owner Occupied |