Union County and Berkeley Heights Township property records for 70 addresses on Mountain Ave, New Providence, NJ · Last verified October 2026
| Properties | 70 |
|---|---|
| Median Sale Price | $665,000 |
| Deeds and Mortgages on File | 79 |
| Median Price per Sqft | $296 |
| Owner Occupied | 79% |
| Median Annual Tax Bill | $15,056 |
| Median Year Built | 1960 |
| Median Ownership Tenure | 11 years |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
151 Mountain Ave |
1,843 sqft built 1900 · 0.505 acres | $500,000 Jan 2015 | $16,439 2025 | Assessor Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
159 Mountain Ave |
2,146 sqft built 1960 · 0.487 acres | $780,000 Jul 2021 | $16,953 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
167 Mountain Ave |
2,888 sqft built 1955 · 0.551 acres | $1,350,000 Sep 2026 | $21,534 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
183 Mountain Ave |
2,409 sqft built 1960 · 0.592 acres | $675,000 Jul 2018 | $15,904 2025 | Assessor + 3 Documents Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
184 Mountain Ave |
2,860 sqft built 1993 · 0.55 acres | $825,000 Feb 2016 | $22,577 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
198 Mountain Ave |
3,833 sqft built 1954 · 1.11 acres | $860,000 Feb 2006 | $25,670 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
201 Mountain Ave |
1,800 sqft built 1963 · 0.317 acres | $177,500 Nov 1992 | $11,223 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
207 Mountain Ave |
1,559 sqft built 1957 · 0.214 acres | $575,000 Sep 2021 | $13,026 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
212 Mountain Ave |
3,184 sqft built 1970 · 0.694 acres | $750,000 Jul 2015 | $19,453 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
213 Mountain Ave |
1,577 sqft built 1937 · 0.214 acres | $517,000 Oct 2018 | $11,889 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
219 Mountain Ave |
1,484 sqft built 1933 · 0.214 acres | $74,000 Jun 1979 | $11,443 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
222 Mountain Ave |
2,136 sqft built 1963 · 0.396 acres | $15,354 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
225 Mountain Ave |
1,838 sqft built 1935 · 0.214 acres | $228,500 Apr 1988 | $12,041 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
232 Mountain Ave |
1,955 sqft built 1950 · 0.319 acres | $542,000 Feb 2016 | $15,322 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
233 Mountain Ave |
2,092 sqft built 1933 · 0.287 acres | $440,084 Sep 2022 | $13,561 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
243 Mountain Ave |
2,567 sqft built 1928 · 0.555 acres | $98,500 Feb 1978 | $15,794 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
254 Mountain Ave |
2,607 sqft built 1960 · 0.348 acres | $712,000 Sep 2019 | $17,765 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
255 Mountain Ave |
1,110 sqft built 1952 · 0.282 acres | $420,000 Apr 2020 | $10,751 2025 | Assessor + 2 Documents Updated Oct 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
262 Mountain Ave |
1,970 sqft built 1960 · 0.344 acres | $612,500 Sep 2014 | $15,972 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
272 Mountain Ave |
1,992 sqft built 1960 · 0.353 acres | $230,000 Feb 1994 | $16,528 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
280 Mountain Ave |
1,947 sqft built 1960 · 0.344 acres | $245,000 Sep 1993 | $14,882 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
290 Mountain Ave |
1,947 sqft built 1960 · 0.344 acres | $2,054 May 2018 | $14,541 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
298 Mountain Ave |
2,384 sqft built 1960 · 0.344 acres | $472,500 Aug 2014 | $18,080 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
301 Mountain Ave |
1,871 sqft built 1955 · 0.3 acres | $704,550 Apr 2024 | $12,770 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
306 Mountain Ave |
1,838 sqft built 1960 · 0.344 acres | $490,000 Jun 2011 | $14,725 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
309 Mountain Ave |
1,424 sqft built 1955 · 0.3 acres | $269,000 Jan 2000 | $11,910 2025 | Assessor Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
312 Mountain Ave |
2,560 sqft built 1960 · 0.344 acres | $805,000 Oct 2015 | $17,262 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
315 Mountain Ave |
1,424 sqft built 1955 · 0.308 acres | $999,999 Feb 2026 | $12,927 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
320 Mountain Ave |
3,956 sqft built 2018 · 0.344 acres | $550,000 Jul 2005 | $30,928 2025 | Assessor + 4 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
323 Mountain Ave |
1,873 sqft built 1957 · 0.355 acres | $500,000 Oct 2019 | $13,283 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
328 Mountain Ave |
1,680 sqft built 1960 · 0.344 acres | $232,500 Dec 1994 | $12,684 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
329 Mountain Ave |
1,738 sqft built 1957 · 0.33 acres | $407,000 Apr 2014 | $13,440 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
335 Mountain Ave |
1,654 sqft built 1957 · 0.276 acres | $470,000 Feb 2006 | $13,724 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
336 Mountain Ave |
3,297 sqft built 1962 · 0.366 acres | $450,000 Aug 2002 | $17,481 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
369 Mountain Ave |
1,636 sqft built 1960 · 0.358 acres | $10,765 2025 | Assessor Updated Jul 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
370 Mountain Ave |
3,196 sqft built 1990 · 0.458 acres | $859,000 Dec 2020 | $21,693 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
379 Mountain Ave |
2,966 sqft built 1973 · 0.425 acres | $15,478 2025 | Assessor Updated Jul 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
380 Mountain Ave |
3,450 sqft built 1990 · 1.38 acres | $850,000 May 2021 | $18,814 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
387 Mountain Ave |
2,502 sqft built 1962 · 0.346 acres | $497,000 Feb 2004 | $13,938 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
403 Mountain Ave |
3,276 sqft built 1963 · 0.35 acres | $530,000 Jun 2006 | $15,483 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
425 Mountain Ave |
2,658 sqft built 1963 · 0.362 acres | $270,000 Aug 1998 | $14,369 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
435 Mountain Ave |
2,210 sqft built 1963 · 0.562 acres | $13,595 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
445 Mountain Ave |
2,732 sqft built 1963 · 0.546 acres | $290,000 Aug 1994 | $15,056 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
450 Mountain Ave |
2.03 acres | $125,908,757 Feb 1996 | $12,838 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
530 Mountain Ave |
0.53 acres | $141,400,000 Jun 2001 | $3,811 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
535, Apt 603 Mountain Ave |
151,088 sqft built 2016 · 26.4 acres | $4,788,467 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
550 Mountain Ave |
5.03 acres | $141,400,000 Jun 2001 | $36,222 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
575 Mountain Ave |
built 1978 · 24.6 acres | $19,881,500 Dec 2019 | $507,169 2025 | Assessor + 2 Documents Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
580 Mountain Ave |
5.63 acres | $141,400,000 Jun 2001 | $40,463 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
600 Mountain Ave |
153 acres | $141,400,000 Jul 2001 | $3,347,621 2025 | Assessor Updated Jul 2026 | 2 Owners on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
600, #700 Mountain Ave |
9.46 acres | $141,400,000 Jun 2001 | $67,989 2025 | Assessor Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
763 Mountain Ave |
1,544 sqft built 1940 · 0.335 acres | $345,000 May 2014 | $10,678 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
767 Mountain Ave |
1,312 sqft built 1940 · 0.28 acres | $9,923 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
777 Mountain Ave |
1,357 sqft built 1940 · 0.28 acres | $124,061 Aug 2024 | $9,944 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
781 Mountain Ave |
1,284 sqft built 1940 · 0.273 acres | $439,000 Jun 2017 | $11,758 2025 | Assessor + 2 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
785 Mountain Ave |
1,351 sqft built 1940 · 0.382 acres | $348,000 Jul 2021 | $8,959 2025 | Assessor + 3 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
795 Mountain Ave |
1,979 sqft built 1940 · 0.342 acres | $525,000 Sep 2017 | $13,734 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
801 Mountain Ave |
2,512 sqft built 1968 · 0.314 acres | $647,000 Jul 2021 | $15,495 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
809 Mountain Ave |
1,460 sqft built 1954 · 0.321 acres | $149,900 Jun 1996 | $10,673 2025 | Assessor Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
815 Mountain Ave |
1,666 sqft built 1951 · 0.339 acres | $515,000 Aug 2020 | $13,095 2025 | Assessor + 2 Documents Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
821 Mountain Ave |
1,751 sqft built 1951 · 0.332 acres | $429,000 Oct 2019 | $11,538 2025 | Assessor + 1 Document Updated Oct 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
827 Mountain Ave |
1,090 sqft built 1951 · 0.341 acres | $10,683 2025 | Assessor Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
835 Mountain Ave |
1,256 sqft built 1958 · 0.332 acres | $665,000 May 2026 | $11,113 2025 | Assessor + 1 Document Updated Jul 2026 | Owner on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
843 Mountain Ave |
1,620 sqft built 1900 · 0.242 acres | $474,900 Jan 2021 | $10,280 2025 | Assessor + 1 Document Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
855 Mountain Ave |
3,949 sqft built 1999 · 1.12 acres | $550,000 Aug 1998 | $28,627 2025 | Assessor + 2 Documents Updated Aug 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
865 Mountain Ave |
3,233 sqft built 1998 · 0.764 acres | $503,500 Nov 1998 | $26,656 2025 | Assessor + 1 Document Updated Jul 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
875 Mountain Ave |
3,535 sqft built 1998 · 0.817 acres | $1,049,000 Dec 2024 | $26,315 2025 | Assessor + 3 Documents Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
885 Mountain Ave |
2,978 sqft built 1998 · 0.728 acres | $670,000 Apr 2002 | $24,024 2025 | Assessor Updated Oct 2026 | 2 Owners on File Owner Occupied |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
890 Mountain Ave |
built 1977 · 5.03 acres | $53,000 Sep 2017 | $267,185 2025 | Assessor + 4 Documents Updated Jul 2026 | Owner on File |
| Address | Details | Last Sale | Tax Bill | Records | Owner |
|---|---|---|---|---|---|
891 Mountain Ave |
3,240 sqft built 1900 · 0.344 acres | $799,000 May 2023 | $18,604 2025 | Assessor + 5 Documents Updated Oct 2026 | Owner on File Owner Occupied |