Contra Costa County property records for 60 addresses on Hartz Ave, Danville, CA · Last verified August 2026
| Properties | 63 |
|---|---|
| Median Sale Price | $2,750,000 |
| Deeds and Mortgages on File | 117 |
| Median Price per Sqft | $775 |
| Owner Occupied | 8% |
| Median Annual Tax Bill | $17,263 |
| Median Year Built | 1964 |
| Median Ownership Tenure | 11 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
120 sqft · Built 1974 · 0.213 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,750,000Jan 2026 | $3,9722025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
1,164 sqft · Built 1973 · 0.144 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,750,000Jan 2026 | $8,7632025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
0.276 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Sep 2004 | 1 Name on Record | AssessorUpdated Oct 2025 |
6,030 sqft · Built 1946 · 0.339 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,500,000Oct 2019 | $49,2522025 | —Feb 2003 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,296 sqft · Built 1958 · 0.302 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,750,000Jan 2026 | $9,7812025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
5,796 sqft · Built 1946 · 0.219 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,237,000Sep 2002 | $19,7602025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
0.259 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Apr 1994 | $1,8042025 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,091 sqft · Built 2001 · 0.719 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 2010 | $12,3452025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
2,400 sqft · Built 1967 · 0.41 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,5542025 | 2 Names on Record | AssessorUpdated Jul 2026 |
4,244 sqft · Built 1953 · 0.279 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,635,000Jun 2012 | $28,0352025 | —Jun 2012 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
3,550 sqft · Built 1953 · 0.106 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $13,3882025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
10,811 sqft · Built 2001 · 0.369 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $222,000Mar 2000 | $55,6422025 | —Mar 2000 | 2 Names on Record | AssessorUpdated Jul 2026 |
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 2013 | 1 Name on Record | AssessorUpdated Jun 2023 |
1,653 sqft · Built 1965 · 0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $400,000Sep 1998 | $7,9052025 | —Sep 1998 | 1 Name on Record | AssessorUpdated Jul 2026 |
14,182 sqft · Built 1975 · 0.612 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,250,000Oct 2014 | $86,7432025 | —May 2011 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
9 ba · 3,341 sqft · 0.13 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $175,500May 2001 | $19,7502025 | Amount on Record Dec 1993 | 2 Names on Record | AssessorUpdated Jul 2026 |
3,600 sqft · Built 1955 · 0.259 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,6142025 | 2 Names on Record | Assessor + 4 DocumentsUpdated Jul 2026 |
1,946 sqft · Built 1900 · 0.183 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $172,000Dec 1998 | $23,0262025 | Amount on Record Mar 1996 | 2 Names on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
4,551 sqft · Built 1964 · 0.202 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $900,000Apr 1998 | $30,0622025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
16,687 sqft · Built 1977 · 0.458 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,050,000Oct 2018 | $142,3182025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
4,580 sqft · Built 1976 · 0.35 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $47,5382025 | 1 Name on Record | Assessor + 12 DocumentsUpdated Jul 2026 |
4 units · Built 1983 · 918 sq ft
| Last Sale | Median Tax Bill | Median Sale | ||
|---|---|---|---|---|
| $652,000Dec 2024 | $10,7422025 | —4 units |
12,250 sqft · Built 1984 · 0.235 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $900,000Oct 2021 | $4,8882025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Oct 2025 |
1,817 sqft · Built 1921 · 0.123 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,400,000May 2017 | $18,9122025 | —May 2011 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
3,200 sqft · Built 1951 · 0.183 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $23,5732025 | —Jul 2018 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
6,235 sqft · Built 1922 · 0.208 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $881,500Dec 2018 | $35,3562025 | Amount on Record Mar 2013 | 2 Names on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
3,600 sqft · Built 1922 · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Mar 2012 | $30,4252025 | Amount on Record Mar 2010 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,136 sqft · Built 1998 · 0.056 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,6662025 | —Jan 2007 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,875 sqft · Built 1916 · 0.068 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,3972025 | 2 Names on Record | AssessorUpdated Jul 2026 |
7.5 ba · 2,596 sqft · 0.219 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $380,000Jun 1989 | $13,9602025 | 2 Names on Record | AssessorUpdated Jul 2026 |
4,386 sqft · Built 1929 · 0.08 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $300,000Dec 1986 | $7,8732025 | —May 2018 | 1 Name on Record | Assessor + 4 DocumentsUpdated Jul 2026 |
8,959 sqft · Built 1980 · 0.281 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $16,4792025 | —Jun 2000 | 2 Names on Record | Assessor + 4 DocumentsUpdated Jul 2026 |
2,177 sqft · Built 1972 · 0.115 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,400,000Jul 2002 | $17,2632025 | 2 Names on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
12,700 sqft · Built 1924 · 0.315 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Sep 2008 | $9102025 | 1 Name on Record | AssessorUpdated Jul 2026 |
8,310 sqft · Built 2015 · 0.209 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,800,000Aug 2023 | $50,2552025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,092 sqft · Built 1926 · 0.157 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,245,500May 2015 | $14,8212025 | Amount on Record Apr 2002 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,477 sqft · Built 2007 · 0.151 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $925,000Apr 2003 | $28,2002025 | 1 Name on Record | AssessorUpdated Jul 2026 |
3,850 sqft · Built 1952 · 0.14 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Jan 1997 | $10,5862025 | —Jan 1997 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
3,122 sqft · Built 1899 · 0.125 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $975,000Jul 2016 | $27,5792025 | Amount on Record Jan 2016 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
864 sqft · Built 1893 · 0.175 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $311,000Jan 1997 | $7,0142025 | 1 Name on Record | AssessorUpdated Jul 2026 |
4,260 sqft · Built 1998 · 0.135 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $231,500Jul 1997 | $13,3602025 | Amount on Record Jan 1997 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,696 sqft · Built 1935 · 0.134 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,550,000Oct 2018 | $14,7342025 | —Jun 2004 | 2 Names on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
1,152 sqft · Built 1925 · 0.101 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,7732025 | 1 Name on Record | AssessorUpdated Jul 2026 |
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
2,400 sqft · Built 1950 · 0.268 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,370,000Jul 2015 | $59,3112025 | —Jul 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,161 sqft · Built 1983 · 0.089 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jul 1989 | $4,1472025 | 1 Name on Record | AssessorUpdated Jul 2026 |
2,332 sqft · Built 1909 · 0.396 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,400,000Apr 2023 | $55,2622025 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
2,412 sqft · Built 2008 · 0.272 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,050,000Mar 2026 | $27,1362025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,592 sqft · Built 1904 · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $100,000Oct 1998 | $9,6982025 | Amount on Record Jun 1996 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
4,000 sqft · Built 2002 · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,100,000May 2024 | $35,3422025 | —Jun 2017 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
2,980 sqft · Built 1903 · 0.114 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,400,000Jan 2024 | $45,0222025 | Amount on Record Nov 2011 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,697 sqft · Built 1974 · 0.109 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,350,000Nov 2023 | $43,4472025 | Amount on Record Sep 2018 | 1 Name on Record | Assessor + 4 DocumentsUpdated Aug 2026 |
5,390 sqft · Built 1961 · 0.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,650,000Mar 2022 | $43,6272025 | Amount on Record May 2014 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
2,014 sqft · Built 1986 · 0.229 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,600,000Jul 2015 | $33,8722016 | —Jan 2013 | 1 Name on Record | AssessorUpdated May 2024 |
5,792 sqft · Built 1960 · 0.231 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,000,000Jan 2018 | $53,1372025 | Amount on Record May 2014 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
956 sqft · Built 1941 · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,625,000Dec 2016 | $16,9002025 | Amount on Record May 2001 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
3,338 sqft · Built 1902 · 0.114 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $320,000May 1996 | $11,0292025 | —May 2020 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated Aug 2026 |
58,338 sqft · Built 2023 · 1.19 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,279,000Apr 2026 | $454,3312025 | Amount on Record Feb 2026 | 2 Names on Record | Assessor + 25 DocumentsUpdated Aug 2026 |
15,116 sqft · Built 1964 · 0.483 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $4,800,000Apr 2022 | $58,3012025 | Amount on Record Dec 2012 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
4,148 sqft · Built 1990 · 0.269 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 2013 | $30,5292025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |