When was 99 Dupont Ave, Hopatcong Boro, NJ last sold?

The most recent recorded sale was in 2021 for $235,000.

What is the assessed value of 99 Dupont Ave, Hopatcong Boro, NJ?

The total municipal assessment is $271,300 (land plus improvements).

What is 99 Dupont Ave, Hopatcong Boro, NJ worth?

Our model estimates a market value of $359,967, derived from comparable recorded sales nearby.

How many units does 99 Dupont Ave, Hopatcong Boro, NJ have?

Records show 1 dwelling unit at 99 Dupont Ave, Hopatcong Boro, NJ.

What kind of property is 99 Dupont Ave, Hopatcong Boro, NJ?

MOD-IV classifies it as Residential 1-4 unit (class 2).

parceldata.nj

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99 Dupont Ave, Hopatcong Boro, NJ — owner, sales, deeds · parceldata

99 Dupont Ave

Hopatcong Boro, NJ 07843·Sussex County

1912·block 30808·lot 1

$359,967estimated value

Last sale

$235,000

7/26/2021 · taxrecords_nj

Property

Type

Residential 1-4 unit

Tax class

Residential 1-4 unit

Year built

—

Building size

1,381 sq ft

Lot size

0.23 ac

Land description

47X193 IRR

Building description

1SF

Dwelling / commercial units

1 dw / 0 comm

Tax & Assessment

Net assessed value

$271,300

Land value

$125,700

Improvement value

$145,600

Last year's tax

$5,657

Last MOD-IV sale

$235,000

MOD-IV deed date

6/8/2021

Owner mailing address

99 DUPONT AVE
HOPATCONG, NJ 07843

Estimated market value

$359,967

range $326,633 – $407,065

high confidence

Assessment-implied: $307,283; Director's Ratio 0.8829 (2025)
Comp-implied: $416,998; 30 comparable sales

Estimated value, last 11 years

2016: $158,385 → 2026: $359,967

dots are actual sale prices for this property

Bordering

200-ft notice list →

101 Dupont Ave
Lot 56·$24,700

Block 30808All of Block 30808 →

99 Dupont Ave
97 Northwestern Way

Debug — raw data per source

Computed

{
  "isCondoMaster": false,
  "condoCluster": null,
  "siblingUnitCount": 0,
  "portfolioCount": 0,
  "portfolioKeys": {
    "fullKeys": [
      "99 DUPONT AVE HOPATCONG NJ 07843"
    ],
    "zipKeys": [
      "99 DUPONT AVE 07843"
    ]
  },
  "effective_unit_count": 1,
  "effective_unit_count_source": "MOD-IV"
}

MOD-IV

{
  "pams_pin": "1912_30808_1",
  "county_code": "19",
  "district_code": "12",
  "block": "30808",
  "lot": "1",
  "qualifier": "",
  "property_location": "99 DUPONT AVE",
  "property_class": "2",
  "bldg_class": "16",
  "bldg_desc": "1SF",
  "land_desc": "47X193 IRR",
  "year_built": null,
  "living_sqft": 1381,
  "dwelling_units": 1,
  "comm_dwell": null,
  "land_value_cents": "12570000",
  "improvement_value_cents": "14560000",
  "net_value_cents": "27130000",
  "last_yr_tx_cents": "565661",
  "deed_date": "2021-06-08",
  "deed_book": "3598",
  "deed_page": "452",
  "sale_price_cents": "23500000",
  "sales_code": null,
  "owner_mailing_street": "99 DUPONT AVE",
  "owner_mailing_city_state_zip": "HOPATCONG, NJ  07843",
  "mun_name": "HOPATCONG BORO",
  "calc_acre": "0.231000",
  "add_lots1": null,
  "add_lots2": null,
  "prop_use": null,
  "fac_name": null,
  "centroid_lon": -74.6612444469517,
  "centroid_lat": 40.94182952161679
}

SR1A

[
  {
    "id": "11f16332-c992-445a-aa67-63036a9b9ae5",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3598",
    "deed_page": "452",
    "deed_date": "2021-06-08",
    "date_recorded": "2021-07-26",
    "sale_price_cents": "23500000",
    "sr1a_year": null,
    "source": "taxrecords_nj"
  },
  {
    "id": "840e1dd0-5780-42c8-b69e-7986eb213ec4",
    "property_id": null,
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": null,
    "deed_page": null,
    "deed_date": "2021-06-08",
    "date_recorded": "2021-07-26",
    "sale_price_cents": "23500000",
    "sr1a_year": 2022,
    "source": "sr1a"
  },
  {
    "id": "b0744c7d-2adb-4d27-9d12-d4acab8aec26",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3598",
    "deed_page": "452",
    "deed_date": "2021-06-08",
    "date_recorded": "2021-06-08",
    "sale_price_cents": "23500000",
    "sr1a_year": null,
    "source": "modiv_rutgers"
  },
  {
    "id": "35af4f1e-8f19-430a-a6c9-c6f13cf300e4",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3476",
    "deed_page": "382",
    "deed_date": "2018-05-09",
    "date_recorded": "2018-05-15",
    "sale_price_cents": "14829400",
    "sr1a_year": null,
    "source": "taxrecords_nj"
  },
  {
    "id": "0f1c0fd2-bdd3-4296-a207-cdd71fdd55db",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3476",
    "deed_page": "382",
    "deed_date": "2018-05-09",
    "date_recorded": "2018-05-09",
    "sale_price_cents": "14829400",
    "sr1a_year": null,
    "source": "modiv_rutgers"
  },
  {
    "id": "440668ba-45df-4072-bdba-2479d4637f47",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3222",
    "deed_page": "748",
    "deed_date": "2009-03-10",
    "date_recorded": "2009-04-03",
    "sale_price_cents": "100",
    "sr1a_year": null,
    "source": "taxrecords_nj"
  },
  {
    "id": "d247dee0-aa91-4a71-8658-0d5236d609a4",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "3222",
    "deed_page": "748",
    "deed_date": "2009-03-10",
    "date_recorded": "2009-03-10",
    "sale_price_cents": "100",
    "sr1a_year": null,
    "source": "modiv_rutgers"
  },
  {
    "id": "ea919622-4c63-466e-b1ce-76ff256dace0",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "2242",
    "deed_page": "1",
    "deed_date": "1997-09-11",
    "date_recorded": "1997-09-11",
    "sale_price_cents": "10200000",
    "sr1a_year": null,
    "source": "modiv_rutgers"
  },
  {
    "id": "7be79079-c641-4845-9ab4-43d885473acc",
    "property_id": "95956682-d9e2-457b-9fe6-0436e8b133a2",
    "county_code": "19",
    "district_code": "12",
    "block": "30808",
    "lot": "1",
    "qualifier": "",
    "deed_book": "1907",
    "deed_page": "312",
    "deed_date": "1993-01-23",
    "date_recorded": "1993-01-23",
    "sale_price_cents": "10600000",
    "sr1a_year": null,
    "source": "modiv_rutgers"
  }
]

API record·permalink

Frequently asked questions

When was 99 Dupont Ave, Hopatcong Boro, NJ last sold?: The most recent recorded sale was in 2021 for $235,000.
What is the assessed value of 99 Dupont Ave, Hopatcong Boro, NJ?: The total municipal assessment is $271,300 (land plus improvements).
What is 99 Dupont Ave, Hopatcong Boro, NJ worth?: Our model estimates a market value of $359,967, derived from comparable recorded sales nearby.
How many units does 99 Dupont Ave, Hopatcong Boro, NJ have?: Records show 1 dwelling unit at 99 Dupont Ave, Hopatcong Boro, NJ.
What kind of property is 99 Dupont Ave, Hopatcong Boro, NJ?: MOD-IV classifies it as Residential 1-4 unit (class 2).

Based on 30 comparable sales

Address	Sold	Price
214 Durban Ave	4/1/2026	$390,000
307 Santa Fe TR	3/25/2026	$301,000
9 Corsica Rd	3/23/2026	$510,000
14 Tobyhanna TR	3/3/2026	$209,914
636 Lakeside Ave Rear	2/26/2026	$899,900
102 Brooklyn Mountain Rd	2/24/2026	$255,000
117 Conklin Ave	2/23/2026	$217,697
15 Frances Ave	2/18/2026	$480,000
336 Brown TR	2/11/2026	$500,000
7 Esther St	2/9/2026	$510,000
126 Harris Ave	2/6/2026	$427,000
2 Teri Ln	1/29/2026	$482,000
66 Sutton TR	1/27/2026	$485,000
86 Unger Ave	1/23/2026	$340,000
357 Maxim Dr	1/22/2026	$365,000
22 Innis Ave	1/20/2026	$475,000
3 Center St	1/16/2026	$245,000
101 Mildred Ave	1/15/2026	$540,000
4 Mohawk TR	1/6/2026	$375,000
7 Tobyhanna TR	1/6/2026	$490,000
736 Brooklyn Mountain Rd	12/31/2025	$425,000
4 Kansas Way	12/29/2025	$399,900
134 Monroe TR	12/22/2025	$500,000
102 Santa Clara TR	12/17/2025	$420,000
280 Carentan Rd	12/9/2025	$453,918
46 Oklahoma TR	11/26/2025	$575,000
131 Maxim Dr	11/26/2025	$810,000
19 Squire Rd	11/24/2025	$470,000
54 Pt Pleasant Rd	11/21/2025	$348,200
309 Lakeside Blvd	11/17/2025	$950,000

Sales history

7/26/2021$235,000
taxrecords_njBk 3598 / Pg 452
7/26/2021$235,000
SR1A 2022
6/8/2021$235,000
MOD-IV (Rutgers)Bk 3598 / Pg 452
5/15/2018$148,294
taxrecords_njBk 3476 / Pg 382
5/9/2018$148,294
MOD-IV (Rutgers)Bk 3476 / Pg 382
4/3/2009$1
taxrecords_njBk 3222 / Pg 748
3/10/2009$1
MOD-IV (Rutgers)Bk 3222 / Pg 748
9/11/1997$102,000
MOD-IV (Rutgers)Bk 2242 / Pg 1
1/23/1993$106,000
MOD-IV (Rutgers)Bk 1907 / Pg 312

Date	Price	Book / Page	Source
7/26/2021	$235,000	3598 / 452	taxrecords_nj
7/26/2021	$235,000	—	SR1A 2022
6/8/2021	$235,000	3598 / 452	MOD-IV (Rutgers)
5/15/2018	$148,294	3476 / 382	taxrecords_nj
5/9/2018	$148,294	3476 / 382	MOD-IV (Rutgers)
4/3/2009	$1	3222 / 748	taxrecords_nj
3/10/2009	$1	3222 / 748	MOD-IV (Rutgers)
9/11/1997	$102,000	2242 / 1	MOD-IV (Rutgers)
1/23/1993	$106,000	1907 / 312	MOD-IV (Rutgers)