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Prospect Ave, Plainsboro, NJ Property Records

Middlesex County and Plainsboro Township property records for 27 addresses on Prospect Ave, Plainsboro, NJ · Last verified October 2026

Prospect Ave Highlights

Properties 27
Median Sale Price $550,000
Deeds and Mortgages on File 30
Median Price per Sqft $416
Owner Occupied 89%
Median Annual Tax Bill $10,353
Median Year Built 1930
Median Ownership Tenure 22 years

Properties on Prospect Ave

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

3 Prospect Ave

2,357 sqft · built 1932 · 0.284 acres

Last Sale Tax Bill Prior Sale Owner Records
$163,000Jan 1995 $12,9092025 2 Owners on File Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

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4 Prospect Ave

1,336 sqft · built 1930 · 0.385 acres

Last Sale Tax Bill Prior Sale Owner Records
$82,000Mar 1984 $9,2052025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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6 Prospect Ave

2,098 sqft · built 1930 · 0.234 acres

Last Sale Tax Bill Prior Sale Owner Records
$510,000Jan 2014 $14,0292025 Amount on File Feb 2009 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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7 Prospect Ave

1,128 sqft · built 1916 · 0.143 acres

Last Sale Tax Bill Prior Sale Owner Records
$535,000Jul 2025 $7,9142025 Amount on File Aug 2022 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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9 Prospect Ave

1,510 sqft · built 1922 · 0.291 acres

Last Sale Tax Bill Prior Sale Owner Records
$650,000Sep 2023 $9,1002025 Owner on File Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

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12 Prospect Ave

2,188 sqft · built 1941 · 0.464 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000May 2019 $12,6022025 Amount on File Sep 2017 2 Owners on File Owner Occupied Assessor + 4 DocumentsUpdated Jul 2026

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14 Prospect Ave

2,072 sqft · built 2010 · 0.241 acres

Last Sale Tax Bill Prior Sale Owner Records
$180,000Jul 2008 $13,2102025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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15 Prospect Ave

1,276 sqft · built 1875 · 0.355 acres

Last Sale Tax Bill Prior Sale Owner Records
$160,000May 1999 $9,0782025 Owner on File Owner Occupied AssessorUpdated Jul 2026

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16 Prospect Ave

1,237 sqft · built 1919 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$335,000Jul 2020 $8,8652025 Amount on File Aug 2015 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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17 Prospect Ave

1,676 sqft · built 1974 · 0.199 acres

Last Sale Tax Bill Prior Sale Owner Records
$155,000Oct 1994 $10,9732025 —Oct 1994 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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18 Prospect Ave

1,685 sqft · built 1944 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$70,000Jan 1985 $10,3592025 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Jul 2026

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19 Prospect Ave

1,096 sqft · built 1900 · 0.291 acres

Last Sale Tax Bill Prior Sale Owner Records
$149,000Sep 1995 $8,5522025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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20 Prospect Ave

2,336 sqft · built 1925 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$174,900Jul 1993 $13,1522025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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20A Prospect Ave

1,440 sqft · built 1977 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$10,1262025 Owner on File AssessorUpdated Jul 2026

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21 Prospect Ave

1,320 sqft · built 1927 · 0.229 acres

Last Sale Tax Bill Prior Sale Owner Records
$550,000Feb 2024 $9,0282025 Amount on File Nov 2017 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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22 Prospect Ave

1,282 sqft · built 1925 · 0.172 acres

Last Sale Tax Bill Prior Sale Owner Records
$329,000Jan 2004 $9,1312025 Amount on File Aug 1999 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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23 Prospect Ave

1,581 sqft · built 1930 · 0.351 acres

Last Sale Tax Bill Prior Sale Owner Records
$164,000Jan 1997 $8,9072025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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24 Prospect Ave

1,984 sqft · built 1925 · 0.327 acres

Last Sale Tax Bill Prior Sale Owner Records
$440,000Jul 2005 $11,5202025 Amount on File Jun 2001 2 Owners on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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25 Prospect Ave

836 sqft · built 1930 · 0.292 acres

Last Sale Tax Bill Prior Sale Owner Records
$450,000Dec 2024 $8,4312025 Amount on File Jan 2004 2 Owners on File AssessorUpdated Jul 2026

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26 Prospect Ave

1,200 sqft · built 1925 · 0.421 acres

Last Sale Tax Bill Prior Sale Owner Records
$235,000Apr 2002 $8,9182025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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27 Prospect Ave

1,560 sqft · built 1965 · 0.272 acres

Last Sale Tax Bill Prior Sale Owner Records
$136,500Oct 1985 $10,1732025 2 Owners on File AssessorUpdated Jul 2026

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28 Prospect Ave

1,953 sqft · built 1950 · 0.463 acres

Last Sale Tax Bill Prior Sale Owner Records
—Jun 1987 $12,8592025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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29 Prospect Ave

2,227 sqft · built 1952 · 0.353 acres

Last Sale Tax Bill Prior Sale Owner Records
$296,298Jul 2008 $12,6882025 Amount on File Jun 2008 Owner on File Owner Occupied Assessor + 2 DocumentsUpdated Oct 2026

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30 Prospect Ave

2,096 sqft · built 1940 · 0.314 acres

Last Sale Tax Bill Prior Sale Owner Records
$156,000Aug 1990 $13,0972025 2 Owners on File Owner Occupied AssessorUpdated Jul 2026

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31 Prospect Ave

1,232 sqft · built 1950 · 0.36 acres

Last Sale Tax Bill Prior Sale Owner Records
$323,000Jun 2012 $10,3532025 2 Owners on File Owner Occupied Assessor + 3 DocumentsUpdated Jul 2026

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33 Prospect Ave

2,594 sqft · built 1958 · 0.33 acres

Last Sale Tax Bill Prior Sale Owner Records
$232,000Aug 1994 $15,8332025 Owner on File Owner Occupied AssessorUpdated Jul 2026

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34 Prospect Ave

3,677 sqft · built 1957 · 0.526 acres

Last Sale Tax Bill Prior Sale Owner Records
$990,000Mar 2026 $18,5022025 Amount on File Jun 2012 2 Owners on File Owner Occupied Assessor + 1 DocumentUpdated Oct 2026

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Property Records in Nearby Streets