Downer St, Westfield, NJ Property Records

Union County and Westfield Town property records for 87 addresses on Downer St, Westfield, NJ · Last verified August 2026

Downer St Highlights

Properties 87
Median Sale Price $675,000
Deeds and Mortgages on File 109
Median Price per Sqft $367
Owner Occupied 69%
Median Annual Tax Bill $11,132
Median Year Built 1918
Median Ownership Tenure 12 years

Properties on Downer St

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

401 Downer St

1,904 sqft · built 1900 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$460,000Sep 2021 $11,2382025 Amount on Record Jun 2021 Owner on Record Assessor + 3 DocumentsUpdated Jul 2026

407 Downer St

2,190 sqft · built 1900 · 0.16 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Jun 2012 $12,2532025 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

409 Downer St

2,742 sqft · built 1900 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,4432025 Owner on Record AssessorUpdated Jul 2026

413 Downer St

2,344 sqft · built 1930 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$230,000Aug 1987 $12,6792025 2 Owners on Record AssessorUpdated Jul 2026

417 Downer St

1,476 sqft · built 1900 · 0.161 acres

Last Sale Tax Bill Prior Sale Owner Records
$135,000Oct 1989 $10,8182025 2 Owners on Record AssessorUpdated Jul 2026

421 Downer St

1,874 sqft · built 1918 · 0.162 acres

Last Sale Tax Bill Prior Sale Owner Records
$42,000Nov 1985 $11,4652025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

422 Downer St

2,856 sqft · built 1920 · 0.132 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 1973 $13,9722025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

425 Downer St

1,995 sqft · built 1900 · 0.164 acres

Last Sale Tax Bill Prior Sale Owner Records
$54,200Oct 1979 $13,0282025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

428 Downer St

1,493 sqft · built 1900 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$122,750Jun 1994 $9,4432025 —Jun 1994 Owner on Record Assessor + 1 DocumentUpdated Jul 2026

429 Downer St

1,267 sqft · built 1880 · 0.164 acres

Last Sale Tax Bill Prior Sale Owner Records
—Mar 2000 $9,2372025 Owner on Record AssessorUpdated Jul 2026

430 Downer St

2,048 sqft · built 1900 · 0.108 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2020 $12,9772025 —Dec 2010 Owner on Record Assessor + 1 DocumentUpdated Jul 2026

432 Downer St

1,220 sqft · built 1900 · 0.094 acres

Last Sale Tax Bill Prior Sale Owner Records
$8,6502025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

433 Downer St

1,161 sqft · built 1900 · 0.082 acres

Last Sale Tax Bill Prior Sale Owner Records
$250,000Nov 2010 $8,4442025 —Oct 1998 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

435 Downer St

1,097 sqft · built 1900 · 0.165 acres

Last Sale Tax Bill Prior Sale Owner Records
—Nov 1983 $9,0142025 Owner on Record AssessorUpdated Jul 2026

436 Downer St

1,048 sqft · built 1900 · 0.093 acres

Last Sale Tax Bill Prior Sale Owner Records
$600,000Apr 2023 $11,5882025 Amount on Record Apr 2022 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

439 Downer St

1,080 sqft · built 1900 · 0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
$394,000Jul 2023 $7,7192025 Amount on Record Feb 1999 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

440 Downer St

1,582 sqft · built 1925 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$259,900Dec 2002 $10,6392025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

441 Downer St

1,760 sqft · built 1917 · 0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
$337,500Mar 2017 $9,8492025 Amount on Record Sep 2000 Owner on Record Assessor + 5 DocumentsUpdated Aug 2026

443 Downer St

1,080 sqft · built 1900 · 0.076 acres

Last Sale Tax Bill Prior Sale Owner Records
$517,500Oct 2022 $8,9322025 Amount on Record Nov 2017 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

445 Downer St

1,070 sqft · built 1885 · 0.078 acres

Last Sale Tax Bill Prior Sale Owner Records
$575,000Jun 2024 $9,4842025 Amount on Record Jun 2023 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

447 Downer St

1,080 sqft · built 1900 · 0.077 acres

Last Sale Tax Bill Prior Sale Owner Records
$322,000Aug 2021 $8,2352025 Amount on Record Mar 2018 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

500 Downer St

3,819 sqft · built 1901 · 0.219 acres

Last Sale Tax Bill Prior Sale Owner Records
Owner on Record Owner Occupied AssessorUpdated Jul 2026

503 Downer St

1,744 sqft · built 1900 · 0.078 acres

Last Sale Tax Bill Prior Sale Owner Records
—May 1979 $11,3432025 Owner on Record AssessorUpdated Jul 2026

505 Downer St

1,098 sqft · built 1900 · 0.075 acres

Last Sale Tax Bill Prior Sale Owner Records
$135,000Apr 1999 $7,7682025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

506 Downer St

2,082 sqft · built 1931 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$170,000Nov 1992 $12,0382025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

509 Downer St

1,540 sqft · built 1900 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$156,000Sep 1999 $8,2722025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

510 Downer St

2,570 sqft · built 2021 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,395,000Nov 2024 $19,5712025 Amount on Record Nov 2021 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

511 Downer St

2,460 sqft · built 1971 · 0.219 acres

Last Sale Tax Bill Prior Sale Owner Records
$12,4712025 Owner on Record AssessorUpdated Jul 2026

514 Downer St

1,620 sqft · built 1920 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$717,000May 2026 $7,5322025 Amount on Record Jan 2024 Owner on Record Assessor + 3 DocumentsUpdated Jul 2026

518 Downer St

2,258 sqft · built 1995 · 0.167 acres

Last Sale Tax Bill Prior Sale Owner Records
$586,000Aug 2013 $12,0582025 Amount on Record Nov 2000 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

520 Downer St

1,620 sqft · built 1935 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$320,000Jul 2011 $10,1832025 2 Owners on Record AssessorUpdated Jul 2026

521 Downer St

2,330 sqft · built 1984 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000Aug 2018 $11,5752025 Amount on Record Jul 2001 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

525 Downer St

1,768 sqft · built 1927 · 0.113 acres

Last Sale Tax Bill Prior Sale Owner Records
$650,000Oct 2024 $11,7402025 —Apr 2024 2 Owners on Record Assessor + 1 DocumentUpdated Jul 2026

526 Downer St

2,334 sqft · built 1920 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$810,000Sep 2021 $12,0172025 Amount on Record Aug 2002 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

527 Downer St

1,484 sqft · built 1900 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$460,000Jul 2019 $10,7492025 Amount on Record Jul 1995 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

528 Downer St

1,365 sqft · built 1920 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$639,000Oct 2020 $10,7912025 Amount on Record Feb 2002 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Aug 2026

529 Downer St

1,810 sqft · built 1900 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$407,000Jun 2009 $10,4862025 Amount on Record Apr 2008 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

531 Downer St

1,021 sqft · built 1905 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
—Apr 2004 $7,8712025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

533 Downer St

1,032 sqft · built 1908 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$330,000Apr 2013 $8,1662025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

534 Downer St

2,608 sqft · built 1930 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 2000 $13,1192025 2 Owners on Record AssessorUpdated Jul 2026

535 Downer St

1,206 sqft · built 1900 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$355,000Apr 2018 $8,7002025 Amount on Record Jul 2005 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

537 Downer St

1,429 sqft · built 1900 · 0.103 acres

Last Sale Tax Bill Prior Sale Owner Records
$142,500Oct 1998 $9,3582025 Amount on Record Dec 1994 Owner on Record AssessorUpdated Jul 2026

538 Downer St

1,830 sqft · built 1900 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$60,000Mar 1983 $9,5602025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

540 Downer St

1,973 sqft · built 1911 · 0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
$340,000Mar 2004 $9,9292025 Amount on Record Jan 2004 Owner on Record Assessor + 2 DocumentsUpdated Jul 2026

541 Downer St

1,381 sqft · built 1900 · 0.086 acres

Last Sale Tax Bill Prior Sale Owner Records
$405,000Feb 2022 $9,2322025 Amount on Record Jun 1999 Owner on Record Assessor + 2 DocumentsUpdated Jul 2026

542 Downer St

1,213 sqft · built 1920 · 0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
$7,9722025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

543 Downer St

1,210 sqft · built 1900 · 0.136 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Jul 2017 $8,1322025 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

546 Downer St

1,994 sqft · built 1920 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$525,000Jan 2021 $11,3452025 2 Owners on Record Assessor + 1 DocumentUpdated Jul 2026

547 Downer St

2,016 sqft · built 1912 · 0.116 acres

Last Sale Tax Bill Prior Sale Owner Records
$137,500Jan 1999 $11,4552025 Amount on Record Jul 1995 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

548 Downer St

3,686 sqft · built 1978 · 0.162 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,9832025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

551 Downer St

2,165 sqft · built 1850 · 0.116 acres

Last Sale Tax Bill Prior Sale Owner Records
$260,000Feb 2020 $11,3682025 —Sep 1977 Owner on Record Assessor + 3 DocumentsUpdated Jul 2026

552 Downer St

1,134 sqft · built 2025 · 0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 1994 $7,8392025 2 Owners on Record AssessorUpdated Jul 2026

553 Downer St

1,972 sqft · built 1924 · 0.133 acres

Last Sale Tax Bill Prior Sale Owner Records
$11,3272025 Owner on Record Owner Occupied AssessorUpdated Aug 2026

554 Downer St

1,400 sqft · built 1912 · 0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 1994 $8,2172025 2 Owners on Record AssessorUpdated Jul 2026

555 Downer St

1,676 sqft · built 1920 · 0.133 acres

Last Sale Tax Bill Prior Sale Owner Records
$95,555Feb 2010 $10,2292025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

557 Downer St

1,906 sqft · built 1920 · 0.116 acres

Last Sale Tax Bill Prior Sale Owner Records
$333,000Sep 2017 $10,2432025 —Sep 2017 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

558 Downer St

2,337 sqft · built 1920 · 0.217 acres

Last Sale Tax Bill Prior Sale Owner Records
$850,000Jan 2026 $11,0752025 Amount on Record Aug 2021 Owner on Record Assessor + 4 DocumentsUpdated Jul 2026

561 Downer St

25,000 sqft · built 1950 · 0.204 acres

Last Sale Tax Bill Prior Sale Owner Records
$675,000Oct 2020 Amount on Record Mar 2017 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

561A Downer St

1,660 sqft · built 2020 · 0.205 acres

Last Sale Tax Bill Prior Sale Owner Records
$675,000Oct 2020 $15,4372025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

561B Downer St

1,660 sqft · built 2020 · 0.205 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,050,000Jul 2025 $15,4372025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

564 Downer St

3,424 sqft · built 2014 · 0.217 acres

Last Sale Tax Bill Prior Sale Owner Records
$22,0742025 Owner on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

568 Downer St

1,193 sqft · built 1920 · 0.091 acres

Last Sale Tax Bill Prior Sale Owner Records
$65,000Aug 1995 $8,4392025 Amount on Record Jun 1995 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

569 Downer St

1,308 sqft · built 1920 · 0.204 acres

Last Sale Tax Bill Prior Sale Owner Records
$700,000Sep 2020 Amount on Record Sep 2020 Owner on Record Assessor + 2 DocumentsUpdated Jul 2026

569A Downer St

1,670 sqft · built 2020 · 0.205 acres

Last Sale Tax Bill Prior Sale Owner Records
$715,000Jul 2020 $15,7442025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

569B Downer St

1,670 sqft · built 2020 · 0.205 acres

Last Sale Tax Bill Prior Sale Owner Records
$700,000Sep 2020 $15,7442025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

570 Downer St

1,040 sqft · built 1920 · 0.091 acres

Last Sale Tax Bill Prior Sale Owner Records
$190,570Feb 2001 $8,5122025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

573 Downer St

2,460 sqft · built 1932 · 0.282 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 1993 $13,2942025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

603 Downer St

1,705 sqft · built 1964 · 0.212 acres

Last Sale Tax Bill Prior Sale Owner Records
$350,000Jun 2014 $10,7792025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

609 Downer St

1,531 sqft · built 1900 · 0.139 acres

Last Sale Tax Bill Prior Sale Owner Records
$320,000Sep 1995 $9,4982025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

610 Downer St

2,046 sqft · built 1932 · 0.207 acres

Last Sale Tax Bill Prior Sale Owner Records
$585,000Sep 2022 $11,3912025 —Jan 1977 2 Owners on Record Assessor + 1 DocumentUpdated Jul 2026

611 Downer St

1,776 sqft · built 1980 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$565,000May 2020 $11,5082025 Amount on Record Aug 2009 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

612 Downer St

3,518 sqft · built 2024 · 0.207 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,700,000Jun 2024 $29,9242025 Amount on Record Jun 2022 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

619 Downer St

1,202 sqft · built 1900 · 0.416 acres

Last Sale Tax Bill Prior Sale Owner Records
$200,000Feb 2000 $11,1322025 Amount on Record Nov 1999 Owner on Record AssessorUpdated Jul 2026

620 Downer St

1,548 sqft · built 1900 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$440,000Dec 2018 $10,5202025 Amount on Record Sep 2011 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

624 Downer St

1,394 sqft · built 1970 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
$140,000Nov 1992 $11,4652025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

625 Downer St

1,626 sqft · built 1910 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 1994 $11,8082025 2 Owners on Record AssessorUpdated Jul 2026

628 Downer St

2,467 sqft · built 2006 · 0.109 acres

Last Sale Tax Bill Prior Sale Owner Records
$795,000Apr 2023 $15,8582025 Amount on Record Jun 1992 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

631 Downer St

1,568 sqft · built 1993 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$531,000Jul 2015 $12,4552025 Amount on Record Aug 2003 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

634 Downer St

2,420 sqft · built 1971 · 0.223 acres

Last Sale Tax Bill Prior Sale Owner Records
$844,000May 2021 $16,9542025 Amount on Record Nov 2020 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

636 Downer St

2,015 sqft · built 1910 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
—Feb 1997 $12,7962025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

637 Downer St

3,300 sqft · built 2011 · 0.249 acres

Last Sale Tax Bill Prior Sale Owner Records
$790,000Dec 2010 $20,1742025 Amount on Record Oct 2009 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

642 Downer St

988 sqft · built 1910 · 0.083 acres

Last Sale Tax Bill Prior Sale Owner Records
$290,000Oct 2012 $8,2702025 Amount on Record May 2004 Owner on Record Owner Occupied AssessorUpdated Jul 2026

643 Downer St

2,992 sqft · built 2024 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,650,000Sep 2025 $7,4442025 Amount on Record May 2024 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

646 Downer St

1,998 sqft · built 1915 · 0.199 acres

Last Sale Tax Bill Prior Sale Owner Records
$625,000Jun 2022 $11,7032025 Amount on Record Jun 2004 2 Owners on Record Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

647 Downer St

2,992 sqft · built 2024 · 0.166 acres

Last Sale Tax Bill Prior Sale Owner Records
$1,550,000Apr 2025 $26,4932025 Amount on Record Jan 2023 2 Owners on Record Owner Occupied Assessor + 6 DocumentsUpdated Jul 2026

648 Downer St

925 sqft · built 1910 · 0.071 acres

Last Sale Tax Bill Prior Sale Owner Records
$115,000Aug 1990 $8,2652025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

652 Downer St

1,507 sqft · built 1910 · 0.107 acres

Last Sale Tax Bill Prior Sale Owner Records
$375,000Oct 2019 $8,8362025 Amount on Record Feb 1996 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

Property Records in Nearby Streets