Alameda County property records for 40 addresses on Hartnell St, Union City, CA · Last verified October 2026
| Properties | 40 |
|---|---|
| Median Sale Price | $1,080,000 |
| Deeds and Mortgages on File | 63 |
| Median Price per Sqft | $838 |
| Owner Occupied | 73% |
| Median Annual Tax Bill | $9,579 |
| Median Year Built | 1960 |
| Median Ownership Tenure | 14 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1701 Hartnell St |
4 bd · 3 ba · 1,526 sqft built 1960 · 0.165 acres | $249,000 Dec 2001 | $6,884 2025 | Assessor Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1719 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.146 acres | — Feb 2016 | $1,891 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1737 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.146 acres | $1,060,000 Nov 2024 | $14,314 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1755 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.146 acres | $369,000 Apr 2003 | $7,680 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1762 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.156 acres | $372,000 Oct 2010 | $6,862 2025 | Assessor Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1773 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.146 acres | — May 1999 | $4,062 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1780 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.144 acres | $882,000 Nov 2020 | $12,985 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1791 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.146 acres | $1,742 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1798 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.144 acres | $1,080,000 Jul 2026 | $3,681 2025 | Assessor + 1 Document Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1801 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.146 acres | — Oct 2005 | $1,559 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1804 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.144 acres | $165,000 Jun 1990 | $4,678 2025 | Assessor + 6 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1819 Hartnell St |
3 bd · 2 ba · 1,340 sqft built 1960 · 0.146 acres | $717,500 May 2017 | $11,356 2025 | Assessor + 4 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1826 Hartnell St |
3 bd · 2 ba · 1,120 sqft built 1960 · 0.144 acres | $288,000 May 2012 | $5,501 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1837 Hartnell St |
3 bd · 2 ba · 1,088 sqft built 1960 · 0.146 acres | $1,080,000 Oct 2024 | $14,566 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1848 Hartnell St |
3 bd · 2 ba · 1,520 sqft built 1960 · 0.144 acres | $618,000 Jul 2016 | $9,899 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1859 Hartnell St |
4 bd · 2 ba · 1,522 sqft built 1973 · 0.148 acres | $750,000 Dec 2017 | $11,960 2025 | Assessor + 5 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1870 Hartnell St |
4 bd · 2 ba · 1,596 sqft built 1960 · 0.144 acres | $1,210,000 Nov 2021 | $17,053 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1881 Hartnell St |
3 bd · 2 ba · 1,382 sqft built 1973 · 0.148 acres | $70,000 Nov 1998 | $2,493 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1892 Hartnell St |
3 bd · 2 ba · 1,401 sqft built 1960 · 0.144 acres | $530,000 Mar 2014 | $9,135 2025 | Assessor Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1903 Hartnell St |
4 bd · 2 ba · 1,544 sqft built 1973 · 0.148 acres | $67,000 Dec 2001 | $5,429 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1906 Hartnell St |
4 bd · 2 ba · 1,276 sqft built 1960 · 0.144 acres | $620,000 Mar 2006 | $11,540 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1925 Hartnell St |
3 bd · 2 ba · 1,382 sqft built 1973 · 0.148 acres | $360,000 Apr 2009 | $6,698 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1936 Hartnell St |
3 bd · 2 ba · 1,401 sqft built 1960 · 0.144 acres | $1,050,000 May 2021 | $15,280 2025 | Assessor + 3 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1957 Hartnell St |
4 bd · 2 ba · 1,544 sqft built 1973 · 0.148 acres | $100,000 Dec 2021 | $15,435 2025 | Assessor + 5 Documents Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1966 Hartnell St |
4 bd · 2 ba · 1,692 sqft built 1960 · 0.144 acres | — Aug 2011 | $1,797 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1979 Hartnell St |
2 bd · 2 ba · 1,392 sqft built 1973 · 0.148 acres | — Dec 2007 | $1,893 2025 | Assessor Updated Aug 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1996 Hartnell St |
3 bd · 2 ba · 1,401 sqft built 1962 · 0.144 acres | $1,330,000 Dec 2021 | $18,660 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
1999 Hartnell St |
2 bd · 2 ba · 1,550 sqft built 1973 · 0.146 acres | — Dec 2002 | $2,202 2025 | Assessor Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2004 Hartnell St |
3 bd · 2 ba · 1,401 sqft built 1960 · 0.144 acres | $849,000 Jul 2018 | $12,888 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2007 Hartnell St |
3 bd · 2 ba · 1,382 sqft built 1973 · 0.146 acres | $166,500 Apr 1998 | $4,198 2025 | Assessor + 4 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2038 Hartnell St |
4 bd · 2 ba · 1,276 sqft built 1960 · 0.144 acres | $1,220,000 Apr 2026 | $13,709 2025 | Assessor + 3 Documents Updated Sep 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2041 Hartnell St |
4 bd · 2 ba · 1,544 sqft built 1973 · 0.146 acres | $430,000 Mar 2009 | $7,924 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2072 Hartnell St |
3 bd · 2 ba · 1,772 sqft built 1960 · 0.156 acres | $337,000 Jul 2011 | $6,189 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2075 Hartnell St |
4 bd · 2 ba · 1,550 sqft built 1973 · 0.17 acres | $1,300,000 Mar 2025 | $12,281 2025 | Assessor + 4 Documents Updated Sep 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2103 Hartnell St |
9 bd · 5 ba · 3,487 sqft built 1968 · 0.15 acres | $12,500 Sep 1994 | $12,644 2025 | Assessor Updated Sep 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2105 Hartnell St |
9 bd · 5 ba · 3,487 sqft built 1969 · 0.166 acres | $1,900,000 Apr 2024 | $27,329 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2109 Hartnell St |
9 bd · 5 ba · 3,470 sqft built 1971 · 0.15 acres | $580,000 Sep 2010 | $12,248 2025 | Assessor Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2113 Hartnell St |
9 bd · 4 ba · 3,470 sqft built 1971 · 0.15 acres | $320,000 May 1996 | $9,579 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2117 Hartnell St |
9 bd · 5.5 ba · 3,348 sqft built 1973 · 0.148 acres | $962,000 May 2014 | $17,753 2025 | Assessor Updated Aug 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
2119 Hartnell St |
11,429 sqft built 1980 · 0.804 acres | $26,732 2025 | Assessor + 1 Document Updated Aug 2026 | Owner on File |