San Bernardino County property records for 62 addresses on N Mountain Ave, Ontario, CA · Last verified August 2026
| Properties | 66 |
|---|---|
| Median Sale Price | $1,500,000 |
| Deeds and Mortgages on File | 86 |
| Median Price per Sqft | $403 |
| Owner Occupied | 23% |
| Median Annual Tax Bill | $14,706 |
| Median Year Built | 1985 |
| Median Ownership Tenure | 13 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3,960 sqft · built 1979 · 0.285 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $245,000Jul 1999 | $4,1452025 | —Apr 1995 | 2 Names on Record | AssessorUpdated Jul 2026 |
4,800 sqft · built 1965 · 0.294 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $415,000Jul 2013 | $3,6062025 | Amount on Record May 2004 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,806 sqft · built 1978 · 0.488 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,500,000Jul 2021 | $17,4562025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
1,860 sqft · built 1990 · 0.36 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000Jan 1991 | $6,1982025 | —Nov 2008 | 1 Name on Record | AssessorUpdated Jul 2026 |
455 sqft · built 1966 · 0.172 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Jan 2022 | $3,5002025 | Amount on Record Jun 2015 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
7,840 sqft · built 1970 · 0.437 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,000,000Jan 2007 | $12,6492025 | Amount on Record May 1999 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,940 sqft · built 1969 · 0.377 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Apr 2001 | $4,2592025 | —May 2013 | 1 Name on Record | AssessorUpdated Jul 2026 |
3 bd · 3.5 ba · 38,925 sqft · built 2024 · 1.24 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $17,400,000Feb 2025 | $98,9402025 | Amount on Record Aug 2022 | 1 Name on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
5,000 sqft · built 1966 · 0.344 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 2006 | —Aug 2011 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,296 sqft · built 1963 · 0.516 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 2000 | $1,4512025 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
4,616 sqft · built 1972 · 0.915 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Aug 2007 | $26,0252025 | —Feb 2005 | 1 Name on Record | AssessorUpdated Jul 2026 |
22,400 sqft · built 1956 · 1.53 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,800,000Feb 2016 | $23,4002025 | —Dec 2014 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
24,600 sqft · built 1956 · 1.54 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $755,000Jun 2015 | $12,8042025 | —Mar 2005 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
1,624 sqft · built 1977 · 0.516 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,7432025 | —Nov 2002 | 1 Name on Record | AssessorUpdated Jul 2026 |
0.204 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $250,500Mar 2015 | $1,6472025 | —Mar 2007 | 1 Name on Record | AssessorUpdated Jul 2026 |
12,826 sqft · built 1990 · 0.75 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Mar 2007 | $20,3442025 | —May 2010 | 1 Name on Record | AssessorUpdated Jul 2026 |
4 bd · 2 ba · 23,888 sqft · built 1955 · 1.14 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,325,000Jul 2020 | $15,7242025 | 2 Names on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 1 ba · 1,740 sqft · built 1968 · 0.172 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000Feb 2013 | $2,9282025 | Amount on Record Dec 2011 | 1 Name on Record | AssessorUpdated Jul 2026 |
5,556 sqft · built 1965 · 0.505 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Nov 2002 | $12,7582025 | —Jul 2000 | 1 Name on Record | AssessorUpdated Jul 2026 |
4 bd · 2 ba · 1,830 sqft · built 1965
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated Sep 2023 |
15,310 sqft · built 1961 · 1.44 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,1242025 | 1 Name on Record | AssessorUpdated Jul 2026 |
0.252 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $200,000Jan 1991 | $7112025 | 2 Names on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2,448 sqft · built 1972 · 0.757 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,0142025 | 1 Name on Record | AssessorUpdated Jul 2026 |
2 bd · 2 ba · 2,808 sqft · built 1994 · 0.638 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,038,000Oct 2009 | $14,7062025 | Amount on Record Aug 1998 | 1 Name on Record | AssessorUpdated Jul 2026 |
1,418 sqft · built 1993 · 0.286 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Jan 2008 | $8,6502025 | 2 Names on Record | AssessorUpdated Jul 2026 |
2,243 sqft · built 2008 · 0.516 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $959,000Apr 2006 | $19,5282025 | Amount on Record Jun 2004 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
6,840 sqft · built 2000 · 0.626 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,760,000Sep 2020 | $32,7422025 | Amount on Record Jan 2000 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
14,530 sqft · built 1982 · 0.46 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,380,000Oct 2023 | $37,8142025 | Amount on Record Feb 2018 | 1 Name on Record | Assessor + 3 DocumentsUpdated Aug 2026 |
4 bd · 2 ba · 1,980 sqft · built 1955 · 0.22 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $230,000Jun 2012 | $3,1862025 | Amount on Record Jun 2003 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
83,392 sqft · built 1998 · 7.33 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $31,000,000Jan 2015 | $281,6902025 | —Jan 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
2,380 sqft · built 1998 · 0.53 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $31,000,000Jan 2015 | $23,5152025 | —Jan 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
51,740 sqft · built 1998 · 4.65 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $31,000,000Jan 2015 | $63,7962025 | —Jan 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
19,342 sqft · built 1966 · 2.43 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,500,000Jun 1996 | $20,1512025 | —Apr 1996 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
6,370 sqft · built 1988 · 0.482 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,570,000Sep 2025 | $25,0672025 | Amount on Record Mar 2020 | 1 Name on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
5,040 sqft · built 1998 · 0.65 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $31,000,000Jan 2015 | $14,9582025 | —Jan 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
5,727 sqft · built 1999 · 0.739 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $31,000,000Jan 2015 | $37,7242025 | —Jan 2015 | 1 Name on Record | AssessorUpdated Jul 2026 |
2,376 sqft · built 1979 · 0.605 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $800,000Nov 2010 | $11,2592025 | —Sep 2009 | 1 Name on Record | AssessorUpdated Jul 2026 |
13,538 sqft · built 1964 · 1.06 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $425,500Jan 2007 | $16,1172025 | —Oct 2006 | 1 Name on Record | AssessorUpdated Jul 2026 |
2 bd · 2.75 ba · 13,567 sqft · built 2011 · 1.37 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $375,000Dec 1995 | $25,7972025 | 1 Name on Record | AssessorUpdated Jul 2026 |
2 bd · 1.75 ba · 3,715 sqft · built 1970 · 0.492 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,100,000Aug 2012 | $14,8592025 | Amount on Record Jun 2007 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,485 sqft · built 1962 · 0.161 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $525,000Aug 2011 | $6,5752025 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
210 sqft · built 1984 · 0.516 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,347,500Jan 2014 | $12,2452025 | —Jul 2004 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
175,000 sqft · built 2013 · 15.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,025,000Aug 2015 | $465,4902025 | —Jun 2006 | 1 Name on Record | AssessorUpdated Jul 2026 |
6,800 sqft · built 1964 · 1.04 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,969,000Aug 2016 | $59,7212025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record | Assessor + 8 DocumentsUpdated Jun 2023 |
3,260 sqft · built 2019 · 0.822 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $922,500Mar 2019 | $45,7322025 | —Mar 2024 | 1 Name on Record | Assessor + 20 DocumentsUpdated Jul 2026 |
3,874 sqft · built 1980 · 0.733 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $3,550,000Jul 2021 | $41,9502025 | —Dec 2006 | 1 Name on Record | Assessor + 2 DocumentsUpdated Jul 2026 |
2,372 sqft · built 2024 · 0.68 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $922,500Mar 2019 | $22,2482025 | —Mar 2011 | 2 Names on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
9,064 sqft · built 2004 · 0.243 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,300,000Aug 2014 | $30,2832025 | —Sep 2004 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
5 units · Built 2006 · 5,793 sq ft
| Last Sale | Median Tax Bill | Median Sale | ||
|---|---|---|---|---|
| $6,500,000Dec 2019 | $38,9832025 | $4,200,0005 units |
78,568 sqft · built 1999 · 1.98 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $23,679,500Jun 2019 | $97,5362025 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $415,000Mar 2026 | $3,9992025 | Amount on Record Nov 2020 | 2 Names on Record | Assessor + 3 DocumentsUpdated Jul 2026 |
2 bd · 2.5 ba · 1,087 sqft · built 1985 · 0.024 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $96,000Aug 1989 | $4,3962025 | —Feb 2025 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $420,000Dec 2024 | $4,6272025 | Amount on Record Jun 2019 | 1 Name on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 2.5 ba · 1,386 sqft · built 1985 · 0.031 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $89,000Apr 1995 | $2,2932025 | —Sep 2005 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $107,000Feb 2012 | $1,5002025 | Amount on Record Feb 2004 | 1 Name on Record | Assessor + 1 DocumentUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $115,000Jun 2009 | $1,9512025 | Amount on Record Jan 2007 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
3 bd · 3 ba · 1,302 sqft · built 1985 · 0.029 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $209,000Jan 2004 | $3,2062025 | Amount on Record Jun 2001 | 2 Names on Record Owner Occupied | AssessorUpdated Jul 2026 |
3 bd · 2.5 ba · 8,486 sqft · built 1985 · 0.031 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $71,500May 1998 | $1,1982025 | Amount on Record Oct 1997 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $389,500May 2026 | $1,2262025 | Amount on Record Dec 1995 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2 bd · 2.5 ba · 1,087 sqft · built 1985 · 0.024 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $170,000May 2008 | $2,4742025 | Amount on Record Sep 2004 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2 bd · 2.5 ba · 1,156 sqft · built 1985 · 0.026 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $125,000Oct 2002 | $1,9342025 | —May 1998 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Not rated no burnable land in reach |
|---|---|
| Wildfire Likelihood | Negligible |
| Exposure | None beyond ember reach |