Duncan Ave, Rockford, IL Property Records

Winnebago County property records for 23 addresses on Duncan Ave, Rockford, IL · Last verified October 2026

Duncan Ave Highlights

Properties 23
Median Sale Price $141,000
Deeds and Mortgages on File 20
Median Price per Sqft $87
Owner Occupied 100%
Median Annual Tax Bill $4,115
Median Year Built 1957
Median Ownership Tenure 17 years

Properties on Duncan Ave

Owner names and exact recorded amounts are on file and can be viewed instantly on this page with a free 10-day trial.

1506 Duncan Ave

3 bd · 2 ba · 1,396 sqft · built 1990 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$111,000Oct 1999 $4,8932025 Owner on File Owner Occupied AssessorUpdated Aug 2026

1507 Duncan Ave

3 bd · 1 ba · 1,809 sqft · built 1957 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$99,000Aug 2001 $1,9792025 Amount on File Jul 1998 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1511 Duncan Ave

3 bd · 1.5 ba · 1,712 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$103,000May 2003 $4,3452025 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1512 Duncan Ave

2 bd · 1.5 ba · 1,790 sqft · built 1964 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$85,000Oct 2002 $1,4212025 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1515 Duncan Ave

3 bd · 2 ba · 1,846 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$91,500Nov 1998 $4,1872025 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1516 Duncan Ave

3 bd · 2 ba · 1,639 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$106,000Jan 2016 $4,1152025 —Jan 2016 Owner on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1519 Duncan Ave

3 bd · 1 ba · 1,348 sqft · built 1935 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$140,000May 2021 $3,5242025 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

1522 Duncan Ave

2 bd · 1 ba · 1,255 sqft · built 1954 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$116,000Apr 2008 $3,8232025 Amount on File Dec 2007 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1523 Duncan Ave

3 bd · 2 ba · 2,008 sqft · built 1960 · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$186,000Apr 2022 $4,3902025 Owner on File Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

1524 Duncan Ave

3 bd · 2 ba · 2,160 sqft · built 1960 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$150,000Dec 2021 $4,5912025 —Nov 2021 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

1527 Duncan Ave

3 bd · 1.5 ba · 1,670 sqft · built 1950 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$72,500Apr 2017 $1,0162025 Amount on File Jul 2010 Owner on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

1701 Duncan Ave

3 bd · 1 ba · 1,510 sqft · built 1954 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000Mar 2009 $4,7472025 Owner on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1705 Duncan Ave

3 bd · 1 ba · 1,346 sqft · built 1954 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,000May 2020 $3,7412025 Amount on File Oct 2004 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

1709 Duncan Ave

3 bd · 1 ba · 1,616 sqft · built 1954 · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,0352025 —Oct 2008 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1710 Duncan Ave

3 bd · 2.5 ba · 1,866 sqft · built 1956 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$120,000Oct 2007 $4,5612025 —Nov 2004 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1713 Duncan Ave

3 bd · 1.5 ba · 2,140 sqft · built 1955 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,900Sep 2002 $4,3832025 2 Owners on File Owner Occupied AssessorUpdated Aug 2026

1714 Duncan Ave

3 bd · 1 ba · 1,364 sqft · built 1957 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 2001 $1,6182025 Owner on File Owner Occupied AssessorUpdated Aug 2026

1717 Duncan Ave

3 bd · 1 ba · 1,209 sqft · built 1955 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$155,000Sep 2023 $3,6142025 Owner on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

1718 Duncan Ave

3 bd · 1.5 ba · 1,600 sqft · built 1962 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$111,500Feb 2019 $5,0142025 Amount on File — Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

1721 Duncan Ave

3 bd · 1.5 ba · 1,616 sqft · built 1956 · 0.25 acres

Last Sale Tax Bill Prior Sale Owner Records
$141,000Apr 2022 $3,6802025 Amount on File Sep 2017 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

1722 Duncan Ave

3 bd · 1 ba · 1,497 sqft · built 1958 · 0.26 acres

Last Sale Tax Bill Prior Sale Owner Records
$112,500Dec 2008 $1,7482025 Owner on File Owner Occupied AssessorUpdated Aug 2026

1725 Duncan Ave

3 bd · 1 ba · 1,746 sqft · built 1955 · 0.28 acres

Last Sale Tax Bill Prior Sale Owner Records
$4,3002025 Owner on File Owner Occupied AssessorUpdated Aug 2026

1726 Duncan Ave

4 bd · 1.5 ba · 2,910 sqft · built 1961 · 0.289 acres

Last Sale Tax Bill Prior Sale Owner Records
$115,000Jun 2020 $5,7802024 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

Property Records in Nearby Streets