24 SANATORIUM RD

Glen Gardner Boro, Hunterdon County · Block 14, Lot 20

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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)
-47.3%

Estimated tax down $7,239 ($15,292 → $8,053) using 2024→2025 rates (3.906 → 2.057) × assessed net.

Assessment net change: 0.0% ($391,500 → $391,500).

Assessment

Land$102,400
Improvements$289,100
Net (taxable assessed, 2026)$391,500
Town avg ratio used100.00% (Average ratio (Director’s / Chapter 123))
Implied equalized value$391,500
2025 tax (MOD-IV billed)$8,053.16
Est. 2025 tax @ general rate$8,053
Mailing address (2026)24 SANATORIUM RD, GLEN GARDNER; NJ, 088263504

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.

Change since the 2025 sale of $475,000: implied equalized value $391,500 is $83,500 below that sale. This is not an appraisal.

This class 2 — residential (four families or less) — net assessment sits above the town class-2 average of $362,615.

Published average ratio exceeded 100%; New Jersey treats that as 100% for equalization.

Building permits for 24 SANATORIUM RD

The New Jersey construction-permit file lists 1 permit for 24 SANATORIUM RD in Glen Gardner Boro. Permit 25-12109, an alteration, was issued 16 Oct 2025 and closed 13 Nov 2025 with a Certificate of Approval. The reported cost is $2,425.

Permit Type Use Issued Closed Reported cost
25-12109 Alteration International Residential Code 16 Oct 2025 13 Nov 2025, Certificate of Approval $2,425

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 Glen Gardner Boro construction office.

Flood zone for 24 SANATORIUM RD

FEMA’s flood map places the mapped point for 24 SANATORIUM RD in zone X.

The state’s 10-foot ground scan puts the lowest cell on this lot at 501.9 feet and the highest at 537.2 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 24 SANATORIUM RD

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

This lot is within the Glen Gardner WD 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 $391,500 —
2025 $391,500 $8,053.16
2024 $184,500 $7,206.57
2023 $184,500 $7,005.47

Mailing changed in 2026 to 24 SANATORIUM RD, GLEN GARDNER; NJ, 088263504.

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 $184,500 72.01% $256,214 — —
2024 $184,500 66.90% $275,785 0.0% +7.6%
2025 $391,500 58.93% $664,348 +112.2% +140.9%
2026 $391,500 100.00% $391,500 0.0% -41.1%

2026: Published average ratio exceeded 100%; New Jersey treats that as 100% for equalization.

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 $184,500 3.797 $7,005 $7,005.47 —
2024 $184,500 3.906 $7,207 $7,206.57 +2.9%
2025 $391,500 2.057 $8,053 $8,053.16 +11.7%
2026 $391,500 — — — —

Where your money goes

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

Schools
$5,606 69.6%
County
$1,229 15.3%
Municipal
$1,218 15.1%

Of the estimated decrease of $7,239, the school portion moved $5,097 down, the county portion $936 down, and the municipal portion $1,206 down. Those are pieces of the dollar change. They are not a change in each share of the rate.

District school (0.933)$3,653
Regional / consolidated school (0.499)$1,954
County (0.262)$1,026
County library (0.026)$102
County open space (0.026)$102
Municipal purpose (0.311)$1,218

Property details

Class2 — Residential (four families or less)
Building class17 — Above standard quality single-family dwelling
Building2SF
Land description.24
Dwellings1
Commercial units—
Year built1880
Acreage0.24
Zoning—
Tax map page2
Additional lots—
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale$475,000 · 10/22/2025 · sale assessment $391,500 · SR1A 00 — Usable for the sales study
Deed book / page02650 / 00693

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.