William St, Summit, NJ Property Records

Union County and Summit City property records for 22 addresses on William St, Summit, NJ · Last verified August 2026

William St Highlights

Properties 22
Median Sale Price $605,000
Deeds and Mortgages on File 22
Median Price per Sqft $300
Owner Occupied 59%
Median Annual Tax Bill $9,988
Median Year Built 1921
Median Ownership Tenure 11 years

Properties on William St

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

1 William St

2,472 sqft · Built 1900 · 0.107 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$531,500Sep 2015 $10,1632025 Amount on Record Jun 1995 2 Names on Record Assessor + 1 DocumentUpdated Jul 2026

5 William St

2,137 sqft · Built 1912 · 0.096 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$605,000Jul 2023 $10,5382025 Amount on Record Jul 2000 1 Name on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

6 William St

2,976 sqft · Built 1885 · 0.146 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$580,000Sep 2021 $12,6842025 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

7 William St

1,515 sqft · Built 1958 · 0.121 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$410,000Jan 2014 $9,0632025 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

8 William St, #10

1,686 sqft · Built 1880 · 0.142 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$420,000Jan 2015 $9,2062025 2 Names on Record AssessorUpdated Jul 2026

9 William St

1,363 sqft · Built 1957 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$299,500Dec 2012 $7,9052025 2 Names on Record AssessorUpdated Jul 2026

11 William St

1,416 sqft · Built 1915 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$469,000Dec 2009 $8,2362025 Amount on Record Apr 1998 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

12 William St

844 sqft · Built 1908 · 0.126 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$7,2972025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

14 William St, #16

2,032 sqft · Built 1923 · 0.117 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$610,000Apr 2021 $10,0372025 Amount on Record Apr 2012 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

15 William St

1,792 sqft · Built 2006 · 0.117 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$500,000May 2013 $9,8502025 Amount on Record May 2012 2 Names on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

17 William St

2,519 sqft · Built 1923 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,250,000Jan 2025 $14,2802025 Amount on Record Aug 2016 1 Name on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

18 William St

2,229 sqft · Built 1926 · 0.126 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$410,000Apr 2008 $11,9242025 —Apr 2003 2 Names on Record AssessorUpdated Jul 2026

19 William St

1,554 sqft · Built 1956 · 0.117 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$559,000Dec 2020 $7,7752025 Amount on Record Nov 2015 2 Names on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

21 William St

2,846 sqft · Built 1920 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$473,000Oct 2017 $11,5442025 Amount on Record Mar 2017 1 Name on Record Assessor + 2 DocumentsUpdated Jul 2026

22 William St

1,666 sqft · Built 1920 · 0.158 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$11,2852025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

23 William St

2,410 sqft · Built 1921 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$1,200,000Feb 2026 $10,1762025 Amount on Record Jul 2015 1 Name on Record Assessor + 2 DocumentsUpdated Aug 2026

24 William St

2,120 sqft · Built 1910 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$200,000Aug 1986 $8,8442025 2 Names on Record Owner Occupied AssessorUpdated Jul 2026

25 William St

975 sqft · Built 1962 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$415,000May 2010 $8,1332025 Amount on Record Jan 2008 2 Names on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

26 William St

1,278 sqft · Built 1926 · 0.16 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$365,750May 2013 $8,5532025 1 Name on Record Owner Occupied AssessorUpdated Jul 2026

27 William St

2,219 sqft · Built 1918 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$9,9882025 1 Name on Record AssessorUpdated Jul 2026

28 William St

2,166 sqft · Built 1926 · 0.137 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
$10,2392025 1 Name on Record Owner Occupied AssessorUpdated Aug 2026

29 William St

2,219 sqft · Built 1915 · 0.114 acres · Garage

Last Sale Tax Bill Prior Sale Owner Records
—May 2004 $9,5552025 1 Name on Record AssessorUpdated Jul 2026

Property Records in Nearby Streets