Union County and Mountainside Borough property records for 17 addresses on Whipporwill Way, Mountainside, NJ · Last verified August 2026
| Properties | 17 |
|---|---|
| Median Sale Price | $949,999 |
| Deeds and Mortgages on File | 26 |
| Median Price per Sqft | $337 |
| Owner Occupied | 94% |
| Median Annual Tax Bill | $14,404 |
| Median Year Built | 1945 |
| Median Ownership Tenure | 7 years |
Owner names and prior sale amounts shown locked below are available instantly with a free trial.
3,050 sqft · built 1947 · 0.332 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,030,000Jun 2022 | $15,3302025 | Amount on Record Aug 2019 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
3,216 sqft · built 2011 · 0.603 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $949,999Jun 2018 | $20,0032025 | Amount on Record Mar 2011 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
5,271 sqft · built 1947 · 0.796 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,925,000May 2026 | $25,8742025 | Amount on Record Jan 2017 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2026 |
3,507 sqft · built 1945 · 0.548 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $900,000Feb 2019 | $17,5462025 | Amount on Record Jul 2011 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
2,012 sqft · built 1940 · 0.519 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $760,000Feb 2019 | $14,4902025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Aug 2026 |
1,987 sqft · built 1938 · 0.244 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,3282025 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
3,144 sqft · built 1938 · 0.364 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $15,6142025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
1,988 sqft · built 1945 · 0.275 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $549,000Dec 2019 | $10,9262025 | Amount on Record Aug 2009 | 2 Owners on Record Owner Occupied | Assessor + 2 DocumentsUpdated Jul 2026 |
2,073 sqft · built 1940 · 0.257 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $10,9372025 | 2 Owners on Record | AssessorUpdated Jul 2026 |
2,628 sqft · built 1938 · 0.367 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $1,500,000Jun 2026 | $14,9692025 | Amount on Record Apr 2024 | Owner on Record Owner Occupied | Assessor + 4 DocumentsUpdated Jul 2026 |
1,388 sqft · built 1938 · 0.292 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $9,9832025 | 2 Owners on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,863 sqft · built 1952 · 0.357 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $529,000Oct 2010 | $10,9562025 | Amount on Record Jul 1996 | 2 Owners on Record Owner Occupied | Assessor + 3 DocumentsUpdated Jul 2026 |
2,107 sqft · built 1953 · 0.319 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $275,000May 1997 | $11,8172025 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
2,074 sqft · built 1938 · 0.589 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,6612025 | Owner on Record Owner Occupied | AssessorUpdated Jul 2026 |
1,703 sqft · built 1952 · 0.751 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $11,3482025 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
3,169 sqft · built 1955 · 0.58 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $500,000Sep 2015 | $14,4042025 | Owner on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |
4,334 sqft · built 1959 · 0.885 acres
| Last Sale | Tax Bill | Prior Sale | Owner | Records |
|---|---|---|---|---|
| $528,000Jul 2014 | $22,0632025 | 2 Owners on Record Owner Occupied | Assessor + 1 DocumentUpdated Jul 2026 |