Santa Clara County property records for 29 addresses on Helen Ave, Sunnyvale, CA · Last verified September 2026
| Properties | 37 |
|---|---|
| Median Sale Price | $1,800,000 |
| Deeds and Mortgages on File | 41 |
| Median Price per Sqft | $674 |
| Owner Occupied | 22% |
| Median Annual Tax Bill | $8,925 |
| Median Year Built | 1961 |
| Median Ownership Tenure | 14 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
9,782 sqft · built 1961 · 0.511 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,499,750Nov 2012 | $35,8992025 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
5,180 sqft · built 1961 · 0.239 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $2,5342025 | —Oct 2025 | Owner on Record | Assessor + 5 DocumentsUpdated Aug 2026 |
4,700 sqft · built 1960 · 0.204 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $7,6002025 | —Nov 2007 | 2 Owners on Record | AssessorUpdated Sep 2026 |
3,366 sqft · built 1961 · 0.207 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,1192025 | —Aug 1999 | 2 Owners on Record | Assessor + 1 DocumentUpdated Sep 2026 |
6 ba · 4,700 sqft · built 1960 · 0.204 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,225,000Apr 2005 | $19,9062025 | Amount on Record Jul 2003 | Owner on Record | AssessorUpdated Sep 2026 |
2,764 sqft · built 1961 · 0.203 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $830,000Mar 2005 | $19,2632025 | Amount on Record Feb 2004 | Owner on Record | Assessor + 1 DocumentUpdated Aug 2026 |
3,366 sqft · built 1961 · 0.206 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,1192025 | 2 Owners on Record | Assessor + 1 DocumentUpdated Sep 2026 |
2,764 sqft · built 1961 · 0.203 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $8,3112025 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $5,4712025 | 2 Owners on Record | AssessorUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $490,000Oct 2013 | $10,5952025 | —Oct 2013 | Owner on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,700,000Feb 2019 | $22,0362025 | Amount on Record May 2006 | 2 Owners on Record | Assessor + 4 DocumentsUpdated Sep 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,5852025 | Owner on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $850,000Apr 2012 | $12,4622025 | —Apr 2012 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 1992 | $1412025 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Feb 2026 | $13,3912025 | —Dec 2014 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Feb 2026 |
4 ba · 2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $350,000Dec 1994 | $17,5632025 | —Jul 2016 | 3 Owners on Record | Assessor + 1 DocumentUpdated Oct 2025 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,800,000Dec 2022 | $21,7622025 | Amount on Record Apr 2012 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Oct 2025 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $900,000Apr 2006 | $14,3372025 | —Mar 2013 | Owner on Record | AssessorUpdated Oct 2025 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,950,000Oct 2021 | $24,0342025 | 2 Owners on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,865,000Jul 2022 | $22,7542025 | Amount on Record Jun 2012 | 2 Owners on Record | Assessor + 2 DocumentsUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,5852025 | Owner on Record | AssessorUpdated Aug 2026 |
2,764 sqft · built 1961 · 0.193 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,6692025 | Owner on Record | Assessor + 1 DocumentUpdated Aug 2026 |
2,910 sqft · built 1961 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jun 2006 | $9,5822025 | —Jan 2006 | Owner on Record | AssessorUpdated Oct 2025 |
5 units · Built 1983 · 1,080 sq ft
| Last Sale | Median Tax Bill | Median Sale | ||
|---|---|---|---|---|
| $800,000May 2026 | $5,5022025 | $331,0005 units |
2,910 sqft · built 1961 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,925,000Jun 2017 | $22,0772025 | —Dec 2013 | Owner on Record | Assessor + 2 DocumentsUpdated Oct 2025 |
2,910 sqft · built 1961 · 0.153 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,1372025 | —Feb 2011 | Owner on Record Owner Occupied | AssessorUpdated Oct 2025 |
5 units · Built 1983 · 1,080 sq ft
| Last Sale | Median Tax Bill | Median Sale | ||
|---|---|---|---|---|
| $930,000May 2024 | $4,5002025 | $292,5005 units |
3 bd · 1 ba · 1,455 sqft · built 1930 · 0.318 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Aug 2017 | Amount on Record Nov 2015 | Owner on Record | AssessorUpdated May 2024 |
2 bd · 1 ba · 1,101 sqft · built 1955 · 0.272 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Aug 2017 | Amount on Record Nov 2015 | Owner on Record | AssessorUpdated May 2024 |