Contra Costa County property records for 37 addresses on South Ave, Alamo, CA · Last verified October 2026
| Properties | 37 |
|---|---|
| Median Sale Price | $4,133,000 |
| Deeds and Mortgages on File | 82 |
| Median Price per Sqft | $729 |
| Owner Occupied | 92% |
| Median Annual Tax Bill | $23,327 |
| Median Year Built | 1986 |
| Median Ownership Tenure | 12 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
121 South Ave |
5 bd · 3 ba · 2,650 sqft built 1949 · 0.416 acres | $315,000 Jun 1992 | $9,922 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
123 South Ave |
4 bd · 2.5 ba · 2,879 sqft built 1956 · 0.5 acres | — Jul 2016 | $1,696 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
130 South Ave |
4 bd · 3 ba · 2,654 sqft built 1955 · 0.439 acres | $419,500 Jun 1992 | $11,637 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
133 South Ave |
5 bd · 4.5 ba · 3,959 sqft built 1952 · 0.5 acres | $1,950,000 Jun 2004 | $32,488 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
135 South Ave |
2 bd · 2 ba · 1,990 sqft built 1950 · 0.5 acres | $1,140,000 Nov 2007 | $17,186 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
140 South Ave |
4 bd · 3 ba · 3,060 sqft built 2006 · 0.479 acres | $2,700,000 Apr 2021 | $9,224 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
141 South Ave |
5 bd · 3.5 ba · 2,998 sqft built 1953 · 0.5 acres | $2,875,000 Apr 2021 | $34,741 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
150 South Ave |
3 bd · 3.5 ba · 3,764 sqft built 2002 · 0.479 acres | $7,754 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
153 South Ave |
9 bd · 5 ba · 4,247 sqft built 2012 · 0.5 acres | $2,500,000 Jun 2013 | $34,658 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
165 South Ave |
5 bd · 1.5 ba · 4,221 sqft built 2011 · 0.5 acres | $2,415,000 May 2012 | $34,830 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
181 South Ave |
3 bd · 4.5 ba · 7,453 sqft built 2004 · 0.979 acres | $6,595,000 Sep 2021 | $48,513 2025 | Assessor + 3 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
204 South Ave |
4 bd · 2.5 ba · 2,693 sqft built 1986 · 0.475 acres | $1,100,000 Sep 2010 | $16,247 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
208 South Ave |
5 bd · 3 ba · 3,154 sqft built 1910 · 0.596 acres | $600,000 Jun 2000 | $11,042 2025 | Assessor + 2 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
211 South Ave |
3 bd · 2 ba · 2,105 sqft built 1952 · 0.509 acres | $310,000 May 1986 | $6,904 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
221 South Ave |
4 bd · 2.5 ba · 2,930 sqft built 1954 · 0.569 acres | $2,253 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
228 South Ave |
4 bd · 4.5 ba · 5,487 sqft built 1991 · 0.509 acres | $3,750,000 Oct 2024 | $41,648 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
240 South Ave |
6 bd · 6.5 ba · 5,669 sqft built 1991 · 0.506 acres | $4,133,000 Jul 2020 | $50,418 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
260 South Ave |
5 bd · 6 ba · 6,151 sqft built 2015 · 0.739 acres | $975,000 Feb 2011 | $34,867 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
261 South Ave |
4 bd · 3.5 ba · 3,039 sqft built 1955 · 0.504 acres | $515,000 Jul 1993 | $13,352 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
268 South Ave |
4 bd · 4 ba · 4,100 sqft built 1990 · 0.459 acres | $2,900,000 May 2022 | $35,061 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
270 South Ave |
3 bd · 2.5 ba · 2,495 sqft built 1957 · 0.584 acres | $2,783 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
271 South Ave |
4 bd · 3.5 ba · 3,015 sqft built 1955 · 0.522 acres | $623,500 Sep 1995 | $12,283 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
280 South Ave |
4 bd · 3 ba · 2,418 sqft built 1955 · 0.57 acres | $5,567 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
290 South Ave |
4 bd · 3 ba · 2,623 sqft built 1954 · 0.571 acres | $8,267 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
300 South Ave |
5 bd · 6.5 ba · 5,612 sqft built 1986 · 0.619 acres | $4,150,000 Apr 2024 | $30,527 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
319 South Ave |
5 bd · 5.5 ba · 5,920 sqft built 1985 · 0.659 acres | $2,000,000 Jan 2014 | $27,517 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
320 South Ave |
4 bd · 3.5 ba · 3,320 sqft built 1986 · 0.781 acres | $1,700,000 Dec 2013 | $24,228 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
329 South Ave |
4 bd · 2.5 ba · 2,887 sqft built 1984 · 0.639 acres | $1,500,000 Oct 2013 | $20,882 2025 | Assessor + 5 Documents Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
339 South Ave |
3 bd · 2.5 ba · 2,656 sqft built 1987 · 0.818 acres | — Jan 2006 | $11,308 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
340 South Ave |
5 bd · 3.5 ba · 3,330 sqft built 1987 · 0.708 acres | $1,700,000 Sep 2015 | $23,351 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
349 South Ave |
4 bd · 3.5 ba · 3,418 sqft built 1988 · 0.809 acres | $1,550,000 Jun 2006 | $23,907 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
359 South Ave |
3 bd · 3.5 ba · 3,857 sqft built 1986 · 1.27 acres | $1,500,000 Sep 2014 | $20,568 2025 | Assessor + 6 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
360 South Ave |
4 bd · 3 ba · 3,078 sqft built 1984 · 0.7 acres | $1,650,000 Jan 2015 | $23,327 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
370 South Ave |
4 bd · 3.5 ba · 3,332 sqft built 1988 · 1.27 acres | $2,675,000 Nov 2019 | $32,842 2025 | Assessor + 7 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
379 South Ave |
6 bd · 6.5 ba · 7,379 sqft built 1986 · 1.35 acres | $4,400,000 Aug 2021 | $52,226 2025 | Assessor + 6 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
389 South Ave |
6 bd · 8.5 ba · 12,164 sqft built 1990 · 3 acres | $5,000,000 Jan 2022 | $58,418 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
399 South Ave |
4 bd · 2.5 ba · 3,154 sqft built 1984 · 1.13 acres | $1,982,500 Aug 2016 | $27,116 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |