McHenry County property records for 27 addresses on Knolltop Rd, Union, IL · Last verified August 2026
| Properties | 27 |
|---|---|
| Median Sale Price | $365,000 |
| Deeds and Mortgages on File | 23 |
| Median Price per Sqft | $183 |
| Owner Occupied | 89% |
| Median Annual Tax Bill | $6,655 |
| Median Year Built | 1975 |
| Median Ownership Tenure | 8 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3 bd · Built 1978 · 1.13 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
Built 1978 · 1.11 acres · Garage · Pool
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $173,000Feb 1997 | 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
3 bd · 3 ba · 1,561 sqft · 1.16 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $311,000Aug 2022 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
3 bd · 3.5 ba · 1,837 sqft · 1.06 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,5392024 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1 ba · Built 1975 · 1.11 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Nov 2001 | Amount on Record Oct 1995 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
2 ba · Built 1975 · 1.14 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jul 2001 | 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
4 bd · Built 1972 · 1.09 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Dec 2011 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated May 2024 |
1.5 ba · 2,086 sqft · 1.2 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $369,500Apr 2026 | $7,5542024 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
3 bd · 4 ba · 2,778 sqft · 1.08 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $347,500Jun 2018 | —Jun 2020 | 1 Name on Record Owner Occupied | Assessor + 4 DocumentsUpdated May 2024 |
2 ba · 1,222 sqft · 1.23 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $325,000Oct 2022 | 2 Names on Record | Assessor + 2 DocumentsUpdated May 2024 |
1.5 ba · 2,910 sqft · 2.29 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $600,000Jul 2026 | $6,6552024 | Amount on Record Feb 2019 | 2 Names on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
4 bd · 2 ba · 2,118 sqft · 2.01 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $330,000Jul 2022 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
3 bd · 1 ba · 1.36 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| Amount on Record Oct 1996 | 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
2,067 sqft · Built 1975 · 1.1 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $6,9032024 | 1 Name on Record Owner Occupied | AssessorUpdated Aug 2026 |
1 ba · Built 1975 · 1.16 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
3 bd · Built 1971 · 1.04 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
2 ba · Built 1971 · 1.11 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
3 bd · 2 ba · 3,542 sqft · 2.29 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $198,000Jun 2017 | $1,1602024 | —Jun 2017 | 2 Names on Record Owner Occupied | Assessor + 2 DocumentsUpdated Aug 2026 |
3 ba · 2,340 sqft · 1.26 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $430,000Jul 2022 | Amount on Record May 2016 | 2 Names on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
Built 1975 · 1.65 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $242,000Mar 2001 | —Jul 1998 | 2 Names on Record | AssessorUpdated May 2024 |
1 ba · Built 1975 · 6.72 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
1.5 ba · 2,754 sqft · 2.29 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $365,000Mar 2025 | $5,4632024 | —Mar 2025 | 1 Name on Record Owner Occupied | AssessorUpdated Jul 2026 |
Built 1975 · 1.36 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
2 ba · Built 1980 · 1.28 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $228,000Apr 2002 | Amount on Record Sep 2000 | 2 Names on Record Owner Occupied | AssessorUpdated May 2024 |
Built 1975 · 1.16 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| 1 Name on Record Owner Occupied | Assessor + 1 DocumentUpdated May 2024 |
4 bd · 3 ba · 1,904 sqft · 1.25 acres · Garage
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $315,000Jul 2008 | 1 Name on Record | AssessorUpdated May 2024 |
1.11 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| —Jan 2006 | 1 Name on Record Owner Occupied | AssessorUpdated May 2024 |
Source: USDA Forest Service Wildfire Risk to Communities · 2nd edition (2024), fuels as of 2020
| Wildfire Risk | Low this street's cells rank at the 5th percentile of exposed land nationally · 32nd in Illinois |
|---|---|
| Wildfire Likelihood | Low — less than 1 in 10,000 per year |
| Exposure | Direct 3 of 5 cells directly exposed · 5 adjoin burnable vegetation |