William St, Scotch Plains, NJ Property Records

Union County and Scotch Plains Township property records for 84 addresses on William St, Scotch Plains, NJ · Last verified October 2026

William St Highlights

Properties 84
Median Sale Price $610,000
Deeds and Mortgages on File 93
Median Price per Sqft $395
Owner Occupied 94%
Median Annual Tax Bill $10,720
Median Year Built 1954
Median Ownership Tenure 13 years

Properties on William St

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

169 William St

2,227 sqft · built 1941 · 0.155 acres

Last Sale Tax Bill Prior Sale Owner Records
$647,000Apr 2023 $14,2642025 Amount on Record May 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

175 William St

2,108 sqft · built 1936 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$415,000Feb 2015 $10,9792025 Amount on Record Aug 2011 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

179 William St

1,131 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$239,000Dec 2013 $9,1642025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

182 William St

2,052 sqft · built 1986 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$200,000Jul 1999 $13,9682025 Owner on Record Owner Occupied AssessorUpdated Oct 2026

183 William St

1,272 sqft · built 1958 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$377,000Jul 2017 $10,1152025 Amount on Record Nov 1984 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

186 William St

1,634 sqft · built 1920 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$260,000May 2003 $8,8432025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

187 William St

2,108 sqft · built 1930 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$595,000Sep 2021 $13,6842025 Amount on Record May 2018 2 Owners on Record Owner Occupied Assessor + 5 DocumentsUpdated Oct 2026

190 William St

1,895 sqft · built 1988 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$160,000Jul 1995 $12,1522025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Aug 2026

193 William St

1,010 sqft · built 1958 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$140,000Feb 1990 $7,8052025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

204 William St

1,544 sqft · built 1925 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
—Sep 2000 $8,5962025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

207 William St

1,197 sqft · built 1945 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Jun 1988 $9,0032025 2 Owners on Record AssessorUpdated Jul 2026

208 William St

1,678 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$300,000Jul 2009 $10,0902025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

211 William St

1,918 sqft · built 1918 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$536,000Aug 2020 $13,3132025 Amount on Record Nov 2019 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

214 William St

1,561 sqft · built 1920 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$681,000May 2024 $9,7572025 Amount on Record Apr 1983 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

215 William St

1,972 sqft · built 1925 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$185,000Mar 1994 $11,4732025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

219 William St

1,932 sqft · built 1929 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$600,000Feb 2026 $10,5722025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Sep 2026

220 William St

1,462 sqft · built 1919 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$192,000Jul 1998 $9,5102025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

223 William St

1,608 sqft · built 1950 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$165,000Oct 1996 $10,9172025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

225 William St

1,872 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$47,500Aug 1976 $9,7812025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

228 William St

1,583 sqft · built 1935 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$325,000Jul 2007 $10,7202025 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

230 William St

1,480 sqft · built 1930 · 0.117 acres

Last Sale Tax Bill Prior Sale Owner Records
$160,500Sep 1992 $9,6822025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

231 William St

1,170 sqft · built 1952 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$265,000Apr 2003 $9,6332025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

234 William St

1,400 sqft · built 1956 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,2262025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

305 William St

1,380 sqft · built 1958 · 0.169 acres

Last Sale Tax Bill Prior Sale Owner Records
$280,000Jul 2002 $10,2752025 Amount on Record Apr 1997 2 Owners on Record Owner Occupied AssessorUpdated Aug 2026

308 William St

1,377 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$178,000Sep 1998 $10,1522025 Amount on Record Feb 1994 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

309 William St

1,380 sqft · built 1958 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$640,000Aug 2025 $10,9542025 Amount on Record Dec 1997 Owner on Record Owner Occupied AssessorUpdated Oct 2026

313 William St

1,110 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$42,443Jun 2013 $9,9792025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

314 William St

1,183 sqft · built 1961 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$390,000Jul 2017 $10,5962025 Amount on Record Nov 2011 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

316 William St

1,391 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$415,000Oct 2006 $12,3012025 —Jul 2004 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

317 William St

1,545 sqft · built 1950 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$585,000Dec 2023 $12,5972025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

320 William St

1,391 sqft · built 1957 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$467,500Nov 2018 $11,0782025 Owner on Record Assessor + 3 DocumentsUpdated Jul 2026

321 William St

1,455 sqft · built 1950 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$389,900Oct 2016 $11,2142025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

324 William St

1,425 sqft · built 1950 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$662,500Apr 2025 $10,4232025 Amount on Record Apr 2004 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

329 William St

1,457 sqft · built 1948 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$38,000Nov 1974 $10,9672025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

330 William St

1,384 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$375,000Dec 2007 $10,5222025 Amount on Record Apr 2003 Owner on Record Assessor + 1 DocumentUpdated Oct 2026

332 William St

1,473 sqft · built 1925 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$610,000Mar 2022 $10,3002025 Amount on Record Apr 2010 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

333 William St

1,296 sqft · built 1947 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$29,465Mar 2012 $9,9422025 Amount on Record Jan 2005 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

336 William St

1,600 sqft · built 2024 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$840,000Oct 2024 $15,5862025 Amount on Record Nov 2023 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

339 William St

1,319 sqft · built 1956 · 0.142 acres

Last Sale Tax Bill Prior Sale Owner Records
$445,000Feb 2023 $10,8932025 Amount on Record Aug 1994 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

340 William St

1,437 sqft · built 1930 · 0.171 acres

Last Sale Tax Bill Prior Sale Owner Records
$565,000Sep 2021 $12,1522025 Amount on Record Jul 2013 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

343 William St

1,971 sqft · built 1954 · 0.142 acres

Last Sale Tax Bill Prior Sale Owner Records
$835,000Apr 2023 $14,2522025 Amount on Record Mar 2019 Owner on Record Owner Occupied Assessor + 6 DocumentsUpdated Jul 2026

346 William St

1,341 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$50,000Jun 1977 $10,0282025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

347 William St

2,510 sqft · built 2010 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$825,000Sep 2019 $18,9332025 Amount on Record Feb 2010 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

350 William St

2,518 sqft · built 2010 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$995,000May 2025 $15,1532025 Amount on Record Feb 2003 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

351 William St

2,316 sqft · built 2010 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$755,000Jan 2019 $17,1792025 Amount on Record Mar 2011 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

400 William St

1,384 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$529,999Oct 2017 $12,6592025 Amount on Record Feb 2017 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

404 William St

1,384 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$425,000Mar 2018 $10,0652025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

405 William St

1,737 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$257,900Aug 2000 $12,4982025 Amount on Record Dec 1994 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Aug 2026

408 William St

1,248 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$430,000Aug 2007 $9,7812025 Amount on Record Sep 2000 Owner on Record Assessor + 1 DocumentUpdated Oct 2026

409 William St

2,019 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$390,000Sep 2005 $14,0172025 —Aug 2005 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

412 William St

1,248 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$430,000Aug 2010 $10,7942025 Amount on Record Dec 2001 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

413 William St

1,675 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$455,000Sep 2004 $11,3502025 Amount on Record Jun 1995 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

416 William St

1,248 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$400,000Jun 2021 $9,8922025 —Jun 2021 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

417 William St

1,324 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$409,000Sep 2019 $10,0902025 Amount on Record Jun 2010 Owner on Record Owner Occupied Assessor + 3 DocumentsUpdated Oct 2026

420 William St

1,248 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$361,000May 2021 $9,3492025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

421 William St

1,269 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$590,000Aug 2022 $10,0902025 Amount on Record Jun 2018 Owner on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

424 William St

1,462 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$500,000Aug 2022 $10,2632025 Amount on Record Jun 1988 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

425 William St

1,269 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,0042025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

428 William St

1,734 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
—Oct 2003 $10,8932025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

429 William St

1,269 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$153,000May 1991 $10,0412025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

432 William St

0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$436,275May 2019 $10,0902025 Amount on Record Sep 2006 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

433 William St

1,737 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Dec 2019 $12,2022025 Amount on Record Sep 1998 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

436 William St

1,384 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
—Nov 2005 $9,9052025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

437 William St

2,207 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$325,000Mar 2013 $13,9682025 Amount on Record Aug 2006 Owner on Record Owner Occupied AssessorUpdated Oct 2026

440 William St

1,728 sqft · built 1930 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$572,000Jul 2021 $12,4492025 Amount on Record Jun 1978 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

503 William St

1,329 sqft · built 1954 · 0.137 acres

Last Sale Tax Bill Prior Sale Owner Records
$415,000Aug 2018 $10,2882025 2 Owners on Record Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

506 William St

1,324 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,6702025 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

507 William St

1,734 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$230,000May 1998 $11,2512025 Amount on Record Apr 1994 Owner on Record Owner Occupied AssessorUpdated Jul 2026

510 William St

1,532 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$11,4112025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

511 William St

1,665 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$682,000Jul 2024 $11,8932025 Amount on Record Jun 1978 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

514 William St

1,324 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$185,000Jun 1998 $10,5722025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

515 William St

1,329 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$750,000Jun 2025 $10,0042025 Amount on Record Apr 1985 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

518 William St

2,458 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$13,6712025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

519 William St

1,309 sqft · built 1954 · 0.117 acres

Last Sale Tax Bill Prior Sale Owner Records
$153,000Jul 1991 $10,4112025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

520 William St

1,324 sqft · built 1954 · 0.153 acres

Last Sale Tax Bill Prior Sale Owner Records
$100,000Nov 2019 $10,6702025 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

522 William St

1,540 sqft · built 1954 · 0.178 acres

Last Sale Tax Bill Prior Sale Owner Records
$400,000Sep 2005 $11,6462025 2 Owners on Record Owner Occupied AssessorUpdated Oct 2026

524 William St

1,540 sqft · built 1954 · 0.117 acres

Last Sale Tax Bill Prior Sale Owner Records
$730,000Jan 2026 $11,3742025 Amount on Record Sep 1977 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

527 William St

1,539 sqft · built 1954 · 0.125 acres

Last Sale Tax Bill Prior Sale Owner Records
$178,500Jun 1995 $11,3372025 2 Owners on Record Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

528 William St

1,324 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$409,000Aug 2006 $10,1892025 Amount on Record May 1997 2 Owners on Record Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

531 William St

1,791 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$180,000Jan 1993 $12,2762025 Owner on Record Owner Occupied AssessorUpdated Jul 2026

532 William St

1,346 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$422,000Sep 2015 $11,0292025 Amount on Record Jun 2014 Owner on Record Owner Occupied AssessorUpdated Oct 2026

535 William St

1,329 sqft · built 1954 · 0.178 acres

Last Sale Tax Bill Prior Sale Owner Records
$198,000Jan 1996 $11,7822025 2 Owners on Record Owner Occupied AssessorUpdated Jul 2026

536 William St

1,319 sqft · built 1954 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$435,000May 2021 $10,2752025 Amount on Record Sep 2012 Owner on Record Owner Occupied Assessor + 1 DocumentUpdated Jul 2026

540 William St

1,756 sqft · built 1955 · 0.114 acres

Last Sale Tax Bill Prior Sale Owner Records
$730,000Jun 2022 $13,8072025 Amount on Record Sep 1993 Owner on Record Assessor + 1 DocumentUpdated Jul 2026

Property Records in Nearby Streets