Cook County property records for 15 addresses on S Helena Ave, Mount Prospect, IL · Last verified August 2026
| Properties | 15 |
|---|---|
| Median Sale Price | $578,000 |
| Deeds and Mortgages on File | 17 |
| Median Price per Sqft | $223 |
| Owner Occupied | 93% |
| Median Annual Tax Bill | $10,514 |
| Median Year Built | 1982 |
| Median Ownership Tenure | 9 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
4 bd · 2.5 ba · 2,136 sqft · built 1981 · 0.215 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $355,000Oct 2010 | $7,6302023 | —Dec 1998 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
5 bd · 2.5 ba · 2,898 sqft · built 1978 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $715,000Jul 2025 | $11,3582023 | Amount on Record May 2022 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 2.5 ba · 2,109 sqft · built 1979 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $630,000Jul 2026 | $8,7102023 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
4 bd · 2.5 ba · 2,322 sqft · built 1983 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $385,000Nov 2013 | $9,3122023 | —Sep 1993 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 4 ba · 4,104 sqft · built 2000 · 0.244 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $578,000Feb 2017 | $17,2142023 | Amount on Record Mar 2006 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
3 bd · 2 ba · 2,057 sqft · built 1977 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $253,000Jun 1995 | $8,4532023 | —Nov 2001 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 4 ba · 4,152 sqft · built 2000 · 0.247 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $25,000Mar 2006 | $17,4722023 | Amount on Record Aug 2004 | Owner on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 2.5 ba · 2,762 sqft · built 1978 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $333,000Aug 2012 | $10,7602023 | —Jan 2003 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 2.5 ba · 3,111 sqft · built 1981 · 0.343 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $487,500Nov 2020 | $12,8252023 | —Nov 2020 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jun 2026 |
4 bd · 2.5 ba · 2,310 sqft · built 1983 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,2162023 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
5 bd · 2.5 ba · 2,515 sqft · built 1988 · 0.343 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,5142023 | —Jun 2019 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jun 2026 |
3 bd · 2 ba · 2,014 sqft · built 1984 · 0.196 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $450,000Mar 2026 | $9,0072023 | Amount on Record Sep 1996 | Owner on Record | Assessor + 1 DocumentUpdated Jun 2026 |
4 bd · 2.5 ba · 3,532 sqft · built 1981 · 0.216 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $12,2282023 | Owner on Record Owner Occupied | AssessorUpdated Jun 2026 |
4 bd · 2.5 ba · 3,211 sqft · built 1982 · 0.215 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —May 1998 | $12,0052023 | —Nov 1996 | Owner on Record Owner Occupied | AssessorUpdated Aug 2026 |
4 bd · 2.5 ba · 2,650 sqft · built 1983 · 0.216 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Dec 2024 | $9,2432023 | Amount on Record Aug 2004 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jun 2026 |