21 Under Rock Rd Sparta, NJ 07871

Built 1958 · ResidentialNew owner since Sep 3, 20262 owner signals on a paid plan
Street ViewSatellite view
Open on map
Assessed
$235,600
Last sale
$380,000Sep 3, 2026
Built
1958
Size
1,188 sq ft
Owner
Sign in to seeOwner details on a paid plan
Status
No open cases

Property information

Block
35002
Lot
32
Qualifier
—
County
Sussex
Municipality
Sparta Twp
Tax map page
3502
Land description
115X188

Building details

Building class
17
Description
RANCH
Dwellings
1
Zoning
R-2
Square feet
1,188
Acreage
0.5 ac

Assessment

Land value
$121,800
52%
Improvement value
$113,800
48%
Total assessment
$235,600
Sale assessment
Sign in to see
Tax (2024)
$8,456

Owner mailing

Street address

Property information on this site is compiled from public sources and is provided as-is; we do not guarantee its accuracy.

5 events · 1958–2026

Sign in to see the parties and documents

  • Deed recorded

    +2071% vs 1978
    $380,000
    Per sq ft$320Held5 moSq ft1,188RecordedSep 14, 2026
    Sign in to open

  • Notice of settlement recorded

    Instrument2026015580CountySussex
    View document
  • 48 years

  • Deed recorded

    $17,500
  • 20 years

  • Property Built

YearProperty taxChangeLandImprovementAssessment
2024$8,456+3.0%$121,800$113,800$235,600
2023$8,213+4.1%$121,800$113,800$235,600
2022$7,888-1.5%$121,800$113,800$235,600
2021$8,010+2.7%$121,800$113,800$235,600
2020$7,803+3.3%$121,800$113,800$235,600
2019$7,557+1.2%$121,800$111,300$233,100
2018$7,464+2.4%$121,800$111,300$233,100
2017$7,289+0.1%$121,800$111,300$233,100
2016$7,280+1.6%$121,800$111,300$233,100
2015$7,162+2.2%$97,600$89,600$187,200
2014$7,011+2.5%$97,600$89,600$187,200
2013$6,840+4.0%$97,600$89,600$187,200
2012$6,578+7.4%$97,600$89,600$187,200
2011$6,123+4.7%$97,600$89,600$187,200
2010$5,848+4.7%$97,600$89,600$187,200
2009$5,586+4.0%$97,600$89,600$187,200
2008$5,373+3.2%$97,600$89,600$187,200
2007$5,204+2.2%$97,600$89,600$187,200
2006$5,092+3.8%$97,600$89,600$187,200
2005$4,905+4.0%$97,600$89,600$187,200
2004$4,717+6.3%$97,600$89,600$187,200
2003$4,437+3.8%$97,600$89,600$187,200
2002$4,273+6.1%$97,600$89,600$187,200
2001$4,029+5.6%$50,000$56,300$106,300
2000$3,816+6.8%$50,000$56,300$106,300
1999$3,572+5.3%$50,000$56,300$106,300
1998$3,391+1.3%$50,000$56,300$106,300
1997$3,348+1.9%$50,000$56,300$106,300
1996$3,285+1.6%$50,000$56,300$106,300
1995$3,232+3.1%$50,000$56,300$106,300
1994$3,136+5.4%$50,000$56,300$106,300
1993$2,976+3.7%$50,000$56,300$106,300
1992$2,870+0.7%$50,000$56,300$106,300
1991$2,849+5.9%$50,000$56,300$106,300
1990$2,689—$50,000$56,300$106,300

All 73 lots on Block 35002