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122 Mountain Ave Hackettstown, NJ 07840

Built 1800Residential
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Assessed
$227,500
Last sale
$200,000Nov 10, 2025
Built
1800
Size
1,497 sq ft
Owner
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Status
No open cases

Property information

Block
122
Lot
4
Qualifier
—
County
Warren
Municipality
Hackettstown Town
Tax map page
20
Land description
30X180

Building details

Building class
17
Description
2SF-L
Dwellings
1
Zoning
CC
Square feet
1,497
Acreage
0.12 ac

Assessment

Land value
$85,700
38%
Improvement value
$141,800
62%
Total assessment
$227,500
Sale assessment
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Tax (2024)
$7,528

Owner mailing

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

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  5. Warren County
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  7. Hackettstown Town
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  9. Block 122
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  11. 122 Mountain Ave, Hackettstown, NJ 07840

3 events · 1800–2025
Sales2
  • 2025Nov 10

    Deed recorded

    +64% vs 2002
    $200,000
    Per sq ft$134Held23.3 yrsSq ft1,497NU codeFamily (1)RecordedNov 19, 2025

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  • 23 years
  • 2002Jul 16

    Deed recorded

    $122,000

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  • 203 years
  • 1800

    Property Built

County clerks also index recorded documents by address and by the names on them. Search Warren County records

36 years · 1989–2024
YearProperty taxChangeLandImprovementAssessment
2024$7,528+1.4%$85,700$141,800$227,500
2023$7,426+5.8%$85,700$141,800$227,500
2022$7,021+2.2%$85,700$141,800$227,500
2021$6,868+2.9%$85,700$141,800$227,500
2020$6,675+0.7%$85,700$141,800$227,500
2019$6,630+2.1%$85,700$141,800$227,500
2018$6,495+1.7%$85,700$141,800$227,500
2017$6,384+0.4%$85,700$141,800$227,500

112 Water St, Hackettstown, NJ 07840Residential1,591 sq ftAssessed $227,7000.08 mi away+6% sq ftView details3 Reese Ave, Hackettstown, NJ 07840Residential1,526 sq ftAssessed $305,3000.40 mi away+2% sq ftView details208 Sharp St, Hackettstown, NJ 07840Residential1,498 sq ftAssessed $232,9000.50 mi awaysame sizeView details155 Liberty St, Hackettstown, NJ 07840Residential1,472 sq ftAssessed $185,0000.70 mi away-2% sq ftView details608 W Moore St, Hackettstown, NJ 07840Residential1,488 sq ftAssessed $265,4000.54 mi away-1% sq ftView details

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  • 103 Little St, Hackettstown, NJ 07840Lot 1
  • 116 Mountain Ave, Hackettstown, NJ 07840Lot 2
  • 118-120 Mountain Ave, Hackettstown, NJ 07840Lot 3
  • 124-126 Mountain Ave, Hackettstown, NJ 07840Lot 5
  • 128 Mountain Ave, Hackettstown, NJ 07840Lot 6
  • 130 Mountain Ave, Hackettstown, NJ 07840Lot 7
  • 134 Mountain Ave, Hackettstown, NJ 07840Lot 8.01
  • 719 Washington St, Hackettstown, NJ 07840Lot 13
  • 715 Washington St, Hackettstown, NJ 07840Lot 14
  • 711 Washington St, Hackettstown, NJ 07840Lot 15
All 11 lots on Block 122