21 Nilsen Ave
Mahwah, NJ 07430
— ba 3,206 sqft Built 1980 Lot 24,829 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 | $377,100 | $289,700 | $666,800 | $14,182 |
| 2024 | $377,100 | $289,700 | $666,800 | $13,762 |
| 2023 | $377,100 | $289,700 | $666,800 | $13,582 |
| 2022 | $377,100 | $289,700 | $666,800 | $13,149 |
| 2021 | $377,100 | $289,700 | $666,800 | $13,009 |
| 2020 | $377,100 | $289,700 | $666,800 | $12,695 |
| 2019 | $377,100 | $289,700 | $666,800 | $12,275 |
| 2018 | $377,100 | $289,700 | $666,800 | $12,102 |
| 2017 | $377,100 | $289,700 | $666,800 | $11,909 |
| 2016 | $357,000 | $289,700 | $646,700 | $11,297 |
| 2015 | $357,000 | $289,700 | $646,700 | $11,142 |
| 2014 | $357,000 | $289,700 | $646,700 | $10,955 |
| 2013 | $357,000 | $289,700 | $646,700 | $10,761 |
| 2012 | $357,000 | $289,700 | $646,700 | $10,515 |
| 2010 | $357,000 | $289,700 | $646,700 | $12,399 |
| 2009 | $331,000 | $252,800 | $583,800 | $12,043 |
| 2008 | $331,000 | $252,800 | $583,800 | $11,535 |
| 2007 | $331,000 | $252,800 | $583,800 | $11,092 |
Property facts
Year built
1980
Property type
single_family
Stories
1
Beds
—
Baths
—
Living area
3,206 sqft
Lot size
24,829 sqft
ZIP code
07430
City
Mahwah
Street
Nilsen Ave
Coordinates
41.09079, -74.11436
Comparable properties nearby
Block-level micro-comps
Same street, ±3 house numbers, sold in the last 24 monthsFrequently asked questions
When did 21 Nilsen Ave last sell?
No public-record sale is on file for 21 Nilsen Ave.
What is the current tax assessment for 21 Nilsen Ave?
The most recent total assessment for 21 Nilsen Ave (year 2025) is $666,800 with $14,182 in property tax.
When was 21 Nilsen Ave built?
21 Nilsen Ave was built in 1980.
How does 21 Nilsen Ave compare to others on Nilsen Ave?
We track 4 other properties on Nilsen Ave. Browse the list under "Other properties on Nilsen Ave" to compare beds, baths, and sale history.
What are the property facts for 21 Nilsen Ave?
21 Nilsen Ave is a — bath, 3,206 sqft, 24,829 sqft lot single_family.
Is 21 Nilsen Ave a flip candidate?
No — 21 Nilsen Ave does not appear in our flips dataset.
Is 21 Nilsen Ave a tax-appeal candidate?
No — 21 Nilsen 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
+0.4%
Implied 1-yr
+1.8%
2026 Q2
$849.4K
2026 Q3
$853K
ZIP 07430 — Median Price History + Forecast
Explore nearby
Geography
Other properties on Nilsen Ave