521 William St
Boonton, NJ 07005
4 bd 2 ba 1,824 sqft Built 1988 Lot 6,098 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 | $164,600 | $160,800 | $325,400 | $11,317 |
| 2024 | $164,600 | $160,800 | $325,400 | $10,998 |
| 2023 | $164,600 | $160,800 | $325,400 | $10,708 |
| 2022 | $164,600 | $160,800 | $325,400 | $10,360 |
| 2021 | $164,600 | $160,800 | $325,400 | $10,149 |
| 2020 | $164,600 | $160,800 | $325,400 | $9,729 |
| 2019 | $164,600 | $160,800 | $325,400 | $9,856 |
| 2018 | $164,600 | $160,800 | $325,400 | $9,596 |
| 2017 | $164,600 | $160,800 | $325,400 | $9,195 |
| 2016 | $164,600 | $160,800 | $325,400 | $8,955 |
| 2015 | $164,600 | $160,800 | $325,400 | $8,808 |
| 2014 | $164,600 | $160,800 | $325,400 | $8,613 |
| 2013 | $164,600 | $160,800 | $325,400 | $8,421 |
| 2012 | $164,600 | $160,800 | $325,400 | $8,187 |
| 2011 | $164,600 | $160,800 | $325,400 | $8,066 |
| 2009 | $144,700 | $214,100 | $358,800 | $7,258 |
| 2008 | $144,700 | $214,100 | $358,800 | $6,853 |
| 2007 | $105,200 | $66,400 | $171,600 | $6,898 |
Property facts
Year built
1988
Property type
single_family
Stories
—
Beds
4
Baths
2
Living area
1,824 sqft
Lot size
6,098 sqft
ZIP code
07005
City
Boonton
Street
William St
Coordinates
40.91001, -74.40461
Comparable properties nearby
Frequently asked questions
When did 521 William St last sell?
No public-record sale is on file for 521 William St.
What is the current tax assessment for 521 William St?
The most recent total assessment for 521 William St (year 2025) is $325,400 with $11,317 in property tax.
When was 521 William St built?
521 William St was built in 1988.
How does 521 William St compare to others on William St?
We track 8 other properties on William St. Browse the list under "Other properties on William St" to compare beds, baths, and sale history.
What are the property facts for 521 William St?
521 William St is a 4 bed, 2 bath, 1,824 sqft, 6,098 sqft lot single_family.
Is 521 William St a flip candidate?
No — 521 William St does not appear in our flips dataset.
Is 521 William St a tax-appeal candidate?
No — 521 William St is not currently flagged as a tax-appeal candidate.
Forecast for this area
ZIP-area linear projection — not a per-property automated valuationQuarterly trend
-0.3%
Implied 1-yr
-1.0%
2026 Q2
$742.6K
2026 Q3
$740.6K
ZIP 07005 — Median Price History + Forecast
Explore nearby
Geography
Other properties on William St