605 GRAND AVE

Hackettstown Town, Warren County · Block 103, Lot 1

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Assessment year 2026 · Rate year 2025 · Prior rate 2024

Assessments are tax year 2026; latest published general rate we have is 2025. Estimate uses that rate until the 2026 rate is loaded.

Estimated tax story (homeowner view)
+1.7%

Estimated tax up $313 ($18,425 → $18,738) using 2024→2025 rates (3.419 → 3.477) × assessed net.

Assessment net change: 0.0% ($538,900 → $538,900).

Assessment

Land$268,000
Improvements$270,900
Net (taxable assessed, 2026)$538,900
Town avg ratio used74.38% (Average ratio (Director’s / Chapter 123))
Implied equalized value$724,523
2025 tax (MOD-IV billed)$18,737.55
Est. 2025 tax @ general rate$18,738
Mailing address (2026)3550 FAIR OAKS LN, LONG BOAT KEY FL, 34228

How the ratio works: New Jersey towns often assess below full market value. The average ratio (Director’s / Chapter 123) estimates what percent of true market value the town’s assessments represent. Implied equalized value ≈ assessed net ÷ (ratio ÷ 100). Example: assessed $187,600 at 55.89% ≈ $335,700 equalized. Tax bills still use assessed value × the general tax rate — not the equalized figure.

The stored sale is not used for a change-since-sale figure. SR1A 33 — Qualified farmland or currently exempt property marks it non-usable, or the price is a nominal amount.

This class 2 — residential (four families or less) — net assessment sits above the town class-2 average of $273,218.

Building permits for 605 GRAND AVE

The New Jersey construction-permit file lists 1 permit for 605 GRAND AVE in Hackettstown Town. Permit 22-017, an alteration, was issued 25 Jan 2022 and closed 9 Mar 2022 with a Certificate of Approval. The reported cost is $5,600.

Permit Type Use Issued Closed Reported cost
22-017 Alteration Business Uses 25 Jan 2022 9 Mar 2022, Certificate of Approval $5,600

The file does not name the work. This file is a full record from 2021 on. Older permits are mostly missing. A repair from before then can be absent here and still be at the Hackettstown Town construction office.

Flood zone for 605 GRAND AVE

FEMA’s flood map places the mapped point for 605 GRAND AVE in zone X.

The state’s 10-foot ground scan puts the lowest cell on this lot at 560.7 feet and the highest at 569.1 feet (NAVD88).

These figures are estimates. The zone and any flood elevation come from FEMA’s flood map at a point for this address, and that point can fall in the street. The high and low come from the state’s 10-foot ground scan of the lot outline. A cell can catch a ditch, the street, or the edge of the lot. They are not a survey and not an insurance rating. A licensed surveyor measures the ground and the building. The town floodplain administrator, or a licensed engineer, confirms what the zone means for this lot. No zone at this point, or zone X, does not mean the lot will not flood.

Water and sewer for 605 GRAND AVE

This lot is most likely on septic because it is outside the mapped sewer service area. Please verify.

This lot is within the Hackettstown MUA water system. Please verify with the provider.

These lines come from the state’s sewer service areas and public community water areas, read at a point for this address. That point can fall in the street. Being inside a named area means the lot is inside that mapped system, not that a pipe or a meter is on the house. Being outside means the lot is outside the mapped service area, which is usually a septic system or a private well. It is not a hookup record. Please verify with the provider. How we read water and sewer.

Year-by-year assessed value & tax

From NJ MOD-IV files (2023, 2024, 2025, 2026). Tax is the MOD-IV billed amount when present; otherwise —. Current mailing is in Assessment above.

Year Assessed net Tax
2026 $538,900 —
2025 $538,900 $18,737.55
2024 $538,900 $18,424.99
2023 $538,900 $18,182.49

Mailing changed in 2026 to 3550 FAIR OAKS LN, LONG BOAT KEY FL, 34228.

Assessed value & ratio history

Parcel assessed nets come from MOD-IV year files (2023, 2024, 2025, 2026). Town average ratios are from Abstract / Chapter 123 when available — implied equalized = assessed ÷ (ratio ÷ 100).

Tax year Assessed net Avg ratio Implied equalized Assessed Δ Equalized Δ
2023 $538,900 89.47% $602,325 — —
2024 $538,900 84.76% $635,795 0.0% +5.6%
2025 $538,900 77.66% $693,922 0.0% +9.1%
2026 $538,900 74.38% $724,523 0.0% +4.4%

Tax year history

Assessed net is from that year’s MOD-IV file. Est. tax = assessed × that year’s general rate when we have the rate sheet. Billed tax is the MOD-IV tax field when present (often empty for the newest file year).

Tax year Assessment net General rate Est. tax (that year) Billed tax Est. vs prior
2023 $538,900 3.374 $18,182 $18,182.49 —
2024 $538,900 3.419 $18,425 $18,424.99 +1.3%
2025 $538,900 3.477 $18,738 $18,737.55 +1.7%
2026 $538,900 — — — —

Where your money goes

Component $ = net × (component rate ÷ 100). Percents are share of school + county + municipal components for rate year 2025.

Schools
$11,161 59.6%
County
$3,643 19.4%
Municipal
$3,934 21.0%

Of the estimated increase of $313, the school portion moved $340 up, the county portion $16 up, and the municipal portion $43 down. Those are pieces of the dollar change. They are not a change in each share of the rate.

District school (2.071)$11,161
County (0.650)$3,503
County open space (0.026)$140
Municipal purpose (0.688)$3,708
Municipal library (0.042)$226

Property details

Class2 — Residential (four families or less)
Building class17 — Above standard quality single-family dwelling
Building3S-F-L
Land description160X204
Dwellings—
Commercial units—
Year built1850
Acreage0.7493
ZoningR125 — town zoning code
Tax map page15
Additional lots—
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale$490,000 · 9/25/2019 · sale assessment $538,900 · SR1A 33 — Qualified farmland or currently exempt property
Deed book / page03002 / 00112

The class, building class, SR1A, and special-tax words are the state’s names for those codes. The zoning code is the town’s. A code that is not on the state list keeps the code and says so.

See this lot on the statewide map, then come back for the full tax story.

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Sources: NJ Division of Taxation MOD-IV (current parcel file) and tax rates for 2025 (Abstract of Ratables). Building permits are read live from the NJ construction-permit file for this block and lot. The flood zone is read live from FEMA’s flood map at a point for this address. The high and low are read live from the state’s 10-foot ground scan. Water and sewer are read live from the state’s service-area maps at that same point. Those map readings are estimates, not a survey and not a hookup record. Estimates are not an official tax bill. Owner names are not shown. Water and sewer · Full disclaimer.