600 NO UNION AVE

Hillside Twp, Union County · Block 101, Lot 18

Show on map

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)
+7.8%

Estimated tax up $93,121 ($1,189,670 → $1,282,791) using 2024→2025 rates (8.253 → 8.899) × assessed net.

Assessment net change: 0.0% ($14,415,000 → $14,415,000).

Assessment

Land$8,524,800
Improvements$5,890,200
Net (taxable assessed, 2026)$14,415,000
Town avg ratio used24.33% (Average ratio (Director’s / Chapter 123))
Implied equalized value$59,247,842
2025 tax (MOD-IV billed)$1,282,790.85
Est. 2025 tax @ general rate$1,282,791
Mailing address (2026)1 WEST AVE, LARCHMONT NY, 10538

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.

Building permits for 600 NO UNION AVE

The New Jersey construction-permit file lists 21 permits for 600 NO UNION AVE in Hillside Twp. 17 are still open in the state file. Permit 20260033, an alteration, was issued 22 Jan 2026 and closed 11 Mar 2026 with a Certificate of Approval. The reported cost is $1,500.

Permit Type Use Issued Closed Reported cost
00020200068U Alteration Business Uses 2 Jun 2020 Open in the state file $1,860,000
000020200377 Alteration Accessory buildings and miscellaneous structures 15 Sep 2020 Open in the state file $50,476
000020220190 Alteration Factory and industrial, low hazard 31 Mar 2022 Open in the state file $33,000
20220205 Alteration Factory and industrial, low hazard 11 Apr 2022 29 Nov 2022, Certificate of Approval $1,000
000020220277 Alteration Factory and industrial, low hazard 19 May 2022 Open in the state file $292,000
000020220406 Addition Factory and industrial, low hazard 25 Jul 2022 Open in the state file $204,000
000020220403 Alteration Business Uses 25 Jul 2022 Open in the state file $365,000
000020220466 Alteration Business Uses 23 Aug 2022 Open in the state file $850,000
20230481 Alteration International Residential Code 25 Mar 2023 Open in the state file $1,400
20230981 Alteration Business Uses 25 Aug 2023 Open in the state file $11,500
20231200 Alteration Business Uses 19 Oct 2023 Open in the state file $21,500
20231209 Alteration Factory and industrial, moderate hazard 27 Oct 2023 Open in the state file $8,047
20240026 Alteration Business Uses 11 Jan 2024 Open in the state file $56,500
20240480 Alteration International Residential Code 16 Jul 2024 23 Jul 2024, Certificate of Approval $1,000
20250120 Alteration Factory and industrial, low hazard 26 Mar 2025 5 Aug 2025, Certificate of Approval $755,000
20250120U Alteration Factory and industrial, low hazard 26 Mar 2025 Open in the state file $14,175
20250121 Alteration Business Uses 26 Mar 2025 Open in the state file $9,875
20250120U Alteration Factory and industrial, low hazard 30 Apr 2025 Open in the state file $3,500
20250120U Alteration Factory and industrial, low hazard 20 May 2025 Open in the state file $8,075
20250463 Alteration Business Uses 22 Oct 2025 Open in the state file $600,000
20260033 Alteration Business Uses 22 Jan 2026 11 Mar 2026, Certificate of Approval $1,500

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 Hillside Twp construction office.

Flood zone for 600 NO UNION AVE

FEMA’s flood map places the mapped point for 600 NO UNION AVE in zone X.

The state’s 10-foot ground scan puts the lowest cell on this lot at 66.8 feet and the highest at 101.2 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 600 NO UNION AVE

This lot is within the Joint Meeting Essex and Union sewer system. Please verify with the provider.

This lot is within the NJ American Water - Raritan 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 $14,415,000 —
2025 $14,415,000 $1,282,790.85
2024 $14,415,000 $1,189,669.95
2023 $14,415,000 $1,155,073.95

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 $14,415,000 34.66% $41,589,729 — —
2024 $14,415,000 31.01% $46,485,005 0.0% +11.8%
2025 $14,415,000 25.88% $55,699,382 0.0% +19.8%
2026 $14,415,000 24.33% $59,247,842 0.0% +6.4%

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 $14,415,000 8.013 $1,155,074 $1,155,073.95 —
2024 $14,415,000 8.253 $1,189,670 $1,189,669.95 +3.0%
2025 $14,415,000 8.899 $1,282,791 $1,282,790.85 +7.8%
2026 $14,415,000 — — — —

Where your money goes

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

Schools
$497,029 38.7%
County
$202,819 15.8%
Municipal
$582,943 45.4%

Of the estimated increase of $93,121, the school portion moved $5,334 up, the county portion $23,064 up, and the municipal portion $64,723 up. Those are pieces of the dollar change. They are not a change in each share of the rate.

District school (3.448)$497,029
County (1.349)$194,458
County open space (0.058)$8,361
Municipal purpose (3.915)$564,347
Municipal library (0.129)$18,595

Property details

Class4B — Industrial
Building class—
Building—
Land description47.36 AC
Dwellings—
Commercial units88
Year built—
Acreage47.36
ZoningHI — town zoning code
Tax map page1
Additional lots—
Census tract / block—
Special tax codes—
MOD-IV current-year tax—
Last sale—
Deed book / page3275 / 966

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.

Show on map

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.