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Colonial Ave, Westfield, NJ Property Records

Union County and Westfield Town property records for 28 addresses on Colonial Ave, Westfield, NJ · Last verified August 2026

Colonial Ave Highlights

Properties 28
Median Sale Price $1,510,538
Deeds and Mortgages on File 35
Median Price per Sqft $420
Owner Occupied 93%
Median Annual Tax Bill $27,990
Median Year Built 1925
Median Ownership Tenure 12 years

Properties on Colonial Ave

Owner names and prior sale amounts shown locked below are available instantly with a free trial.

415 Colonial Ave

3,596 sqft · built 2000 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,100,000Oct 2020 $28,1602025 Amount on Record Sep 2001 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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416 Colonial Ave

2,477 sqft · built 1973 · 0.309 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,180,000Jun 2019 $30,5092025 Amount on Record Aug 2015 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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417 Colonial Ave

1,868 sqft · built 1925 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 1993 $18,2812025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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418 Colonial Ave

2,405 sqft · built 1924 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,850,000Jul 2026 $18,1162025 Amount on Record Nov 2021 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

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419 Colonial Ave

2,573 sqft · built 1925 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$19,1022025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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420 Colonial Ave

2,246 sqft · built 1925 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$699,900Aug 2003 $18,9572025 Amount on Record Apr 1997 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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424 Colonial Ave

2,469 sqft · built 1950 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$900,000Feb 2017 $19,2852025 Amount on Record Jun 2006 2 Owners on Record Assessor + 2 DocumentsUpdated Jul 2026

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427 Colonial Ave

2,634 sqft · built 1924 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$315,000Jan 1989 $19,7712025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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428 Colonial Ave

2,372 sqft · built 1951 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$17,9102025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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431 Colonial Ave

4,384 sqft · built 1925 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$999,900Sep 2015 $24,8912025 Amount on Record Jan 2011 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

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503 Colonial Ave

3,912 sqft · built 1926 · 0.258 acres

Last Sale Tax Bill Prior Sale Owner Records
$398,000Nov 1992 $30,4972025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

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504 Colonial Ave

2,569 sqft · built 1924 · 0.309 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Aug 1999 $27,4632025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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509 Colonial Ave

2,507 sqft · built 1910 · 0.206 acres

Last Sale Tax Bill Prior Sale Owner Records
$833,000Mar 2010 $23,0462025 Amount on Record Apr 2008 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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512 Colonial Ave

3,924 sqft · built 1924 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,500,000Mar 2020 $32,1342025 Amount on Record Jul 2001 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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515 Colonial Ave

5,177 sqft · built 1923 · 0.353 acres

Last Sale Tax Bill Prior Sale Owner Records
$2,475,000Sep 2024 $37,8642025 Amount on Record Jul 1998 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

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520 Colonial Ave

3,744 sqft · built 1932 · 0.302 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,575,000Feb 2021 $32,4942025 Amount on Record Jul 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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521 Colonial Ave

4,402 sqft · built 1925 · 0.48 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,900,000Nov 2014 $36,2392025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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522 Colonial Ave

4,168 sqft · built 2007 · 0.329 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,645,000Feb 2011 $34,9532025 Amount on Record Feb 2006 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

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531 Colonial Ave

4,580 sqft · built 1920 · 0.429 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,751,000Jul 2012 $40,3942025 Amount on Record Aug 2003 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

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532 Colonial Ave

4,397 sqft · built 1920 · 0.271 acres

Last Sale Tax Bill Prior Sale Owner Records
$880,000Aug 2014 $33,2822025 Amount on Record Dec 2005 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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538 Colonial Ave

2,154 sqft · built 1951 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,510,538Jun 2025 $20,9652025 Amount on Record Apr 2009 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

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541 Colonial Ave

2,866 sqft · built 1929 · 0.416 acres

Last Sale Tax Bill Prior Sale Owner Records
$560,000Nov 1987 $31,5752025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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550 Colonial Ave

3,511 sqft · built 1922 · 0.316 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,350,000Aug 2013 $27,9492025 Amount on Record Apr 2002 2 Owners on Record AssessorUpdated Jul 2026

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555 Colonial Ave

4,083 sqft · built 1922 · 0.511 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,600,000Jan 2006 $36,6352025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

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559 Colonial Ave

3,115 sqft · built 1930 · 0.239 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,140,000Apr 2014 $26,8672025 Amount on Record Aug 2005 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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560 Colonial Ave

4,333 sqft · built 1929 · 0.344 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,750,000Jul 2021 $34,6482025 Amount on Record Aug 2019 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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566 Colonial Ave

2,844 sqft · built 1932 · 0.275 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,299,000Feb 2021 $27,9902025 Amount on Record Feb 2016 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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567 Colonial Ave

2,733 sqft · built 1930 · 0.214 acres

Last Sale Tax Bill Prior Sale Owner Records
$915,000Nov 2021 $18,3132025 Amount on Record Sep 1998 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

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Property Records in Nearby Streets