21 Upper Mountain Ave
Montville, NJ 07045
— ba 4,248 sqft Built 1994 Lot 47,350 sqft single_family
No recorded sales
Location
Timeline: Sale, Listing & Tax History
Recorded events
No recorded events
No sale or listing events are on file for this property.
Tax assessment history
| Year | Building | Land | Total assessed | Tax paid |
|---|---|---|---|---|
| 2025 | $665,600 | $254,400 | $920,000 | $25,106 |
| 2024 | $665,600 | $254,400 | $920,000 | $24,554 |
| 2023 | $665,600 | $254,400 | $920,000 | $24,039 |
| 2022 | $697,100 | $254,400 | $951,500 | $24,444 |
| 2021 | $697,100 | $254,400 | $951,500 | $24,111 |
| 2020 | $697,100 | $254,400 | $951,500 | $23,625 |
| 2019 | $697,100 | $254,400 | $951,500 | $23,150 |
| 2018 | $697,100 | $254,400 | $951,500 | $22,950 |
| 2017 | $697,100 | $254,400 | $951,500 | $22,369 |
| 2016 | $697,100 | $254,400 | $951,500 | $21,894 |
| 2015 | $697,100 | $254,400 | $951,500 | $21,123 |
| 2014 | $697,100 | $254,400 | $951,500 | $20,818 |
| 2013 | $697,100 | $254,400 | $951,500 | $20,523 |
| 2012 | $697,100 | $254,400 | $951,500 | $20,590 |
| 2011 | $398,900 | $139,400 | $538,300 | $18,334 |
| 2009 | $398,900 | $139,400 | $538,300 | $17,693 |
| 2008 | $398,900 | $139,400 | $538,300 | $17,230 |
| 2007 | $398,900 | $139,400 | $538,300 | $16,687 |
Property facts
Year built
1994
Property type
single_family
Stories
—
Beds
—
Baths
—
Living area
4,248 sqft
Lot size
47,350 sqft
ZIP code
07045
City
Montville
Street
Upper Mountain Ave
Coordinates
40.90798, -74.35754
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Upper Mountain Ave last sell?
No public-record sale is on file for 21 Upper Mountain Ave.
What is the current tax assessment for 21 Upper Mountain Ave?
The most recent total assessment for 21 Upper Mountain Ave (year 2025) is $920,000 with $25,106 in property tax.
When was 21 Upper Mountain Ave built?
21 Upper Mountain Ave was built in 1994.
How does 21 Upper Mountain Ave compare to others on Upper Mountain Ave?
We track 2 other properties on Upper Mountain Ave. Browse the list under "Other properties on Upper Mountain Ave" to compare beds, baths, and sale history.
What are the property facts for 21 Upper Mountain Ave?
21 Upper Mountain Ave is a — bath, 4,248 sqft, 47,350 sqft lot single_family.
Is 21 Upper Mountain Ave a flip candidate?
No — 21 Upper Mountain Ave does not appear in our flips dataset.
Is 21 Upper Mountain Ave a tax-appeal candidate?
No — 21 Upper Mountain Ave is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-0.2%
Implied 1-yr
-0.9%
2026 Q1
$637.4K
2026 Q2
$636K
ZIP 07045 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Upper Mountain Ave