Union Twp NJ property tax rate 2025: 2.197
Union Twp, Hunterdon County. 2,367 parcels in the MOD-IV 2026 file. Rate shown is tax year 2025 (latest available — not yet matched to assessment year).
Assessments are tax year 2026; latest published general rate we have is 2025. Estimate uses that rate until the 2026 rate is loaded.
Union Twp at a glance
2,367 parcels are on the 2026 file. The 2025 general rate is 2.197, and the prior rate on file is 2.119 for 2024. A typical class 2 assessment is $492,756. Usable sales with a 2025 deed: 61, median $350,000. The state construction file lists 2,524 permits here. The median class 2 house was built in 1977. A property page adds that parcel’s permits, flood zone, mapped flood elevation, and high and low ground. Owner names are not shown.
How to read a Union Twp bill
Union Twp’s general rate of 2.197 is tax year 2025 on the 2026 assessment file. It is not a 2026 bill. The prior general rate on file is 2.119 for 2024. School, county, and municipal shares of this rate are 71.5%, 17.6%, and 10.9%. The largest slice is schools. In Hunterdon County the middle school share for rate year 2025 is 66.1% in Califon Boro. Class 2 net assessments changed from $897,435,500 to $899,772,900, up 0.3%, on 1,826 parcels. Usable sales with a 2025 deed: median $350,000 (61 sales). The largest class share of net assessed value is Residential at 62.2%. State school aid is outside these bars.
Building permits in Union Twp
The New Jersey construction-permit file lists 2,524 permits in Union Twp. This file is a full record from 2021 on. Older permits are mostly missing. Work from before then can be missing here and still be at the Union Twp construction office.
2025 general tax rate in Union Twp: 2.197
This general rate is tax year 2025. The assessment file is 2026. It is not a 2026 bill.
In Hunterdon County, the median municipality’s school share (rate year 2025) is 66.1%; this town is 71.5%. The largest slice here is schools. State school aid is not in these bars — it reduces the school levy before the rate is struck. All Hunterdon towns · How NJ taxes work.
The school percent is the local property-tax levy. The district for this municipality is Union Twp (K-8 or K-6 local), FY2027 K–12 aid $837,161. The high school district is N Hunt/Voorhees Regional, FY2027 K–12 aid $3,865,784. Those aid figures are not slices of these bars. Hunterdon district table.
Prior year (2024) general rate: 2.119.
Tax on a $200,000 or $500,000 sale in Union Twp
These figures use Union Twp’s own ratio and general rate. How the same sale price is calculated for every town. This is not an appraisal and not a collector bill.
2025
A $500,000 sale at the 2025 ratio of 95.15% would be assessed at about $475,750. At the general rate of 2.197, the estimated tax is $10,452. A $200,000 sale at that same ratio and rate would be assessed at about $190,300, with an estimated tax of $4,181.
In Hunterdon County for 2025, the $500,000 bill runs from $6,061 in Glen Gardner Boro to $17,446 in Hampton Boro. The middle bill is $11,003 in Lebanon Twp. All Hunterdon towns.
See every New Jersey town on the same $200,000 and $500,000 sale for 2025.
Recent usable sales in Union Twp
These are the five newest usable deeds on the 2026 file for Union Twp. A $1 deed and a non-usable SR1A sale are left out. Each parcel stores one sale, so this is not every deed recorded in town.
| Address | Deed date | Sale price | Net assessment |
|---|---|---|---|
| 41 OVERLOOK DR | 11/21/2025 | $315,000 | $241,300 |
| 33 GRAVEL HILL RD | 11/14/2025 | $500,000 | $446,100 |
| 703 ROUTE 625 | 11/12/2025 | $600,000 | $486,400 |
| 9 NORTH SLOPE | 11/11/2025 | $310,000 | $191,800 |
| 32 HILLSIDE CT | 11/3/2025 | $385,000 | $243,800 |
Owner names are not shown. The rate year and the assessment file year differ, so this table does not print an estimated tax. This is not a collector’s bill.
Highest estimated tax in Union Twp: $31,852
Residential
The highest residential estimate in Union Twp is $31,852 at 15 FINN RD, on a net assessment of $1,449,800 and a 2025 general rate of 2.197.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 15 FINN RD | 2 — Residential (four families or less) | $1,449,800 | 2025 | $31,852 |
| 1 GEPHARDT FARM ROAD | 2 — Residential (four families or less) | $1,342,300 | 2025 | $29,490 |
| 4 ASHER SMITH ROAD | 2 — Residential (four families or less) | $1,292,600 | 2025 | $28,398 |
| 2 ASHER SMITH ROAD | 2 — Residential (four families or less) | $1,287,900 | 2025 | $28,295 |
| 70 DRIFTWAY WEST | 2 — Residential (four families or less) | $1,281,400 | 2025 | $28,152 |
Business
The highest business estimate in Union Twp is $461,370 at 2X21;236 LINEAL FT, on a net assessment of $21,000,000 and a 2025 general rate of 2.197.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 2X21;236 LINEAL FT | 4A — Commercial | $21,000,000 | 2025 | $461,370 |
| 53 FRONTAGE ROAD | 4A — Commercial | $20,777,800 | 2025 | $456,488 |
| 53 FRONTAGE ROAD | 4A — Commercial | $13,400,000 | 2025 | $294,398 |
| 114 ROUTE 513 | 4A — Commercial | $6,594,000 | 2025 | $144,870 |
| 68 ROUTE 173 W | 4A — Commercial | $6,200,000 | 2025 | $136,214 |
Owner names are not shown. Every parcel in this town uses the same rate, so the highest tax is the highest assessment. Commercial and industrial parcels (class 4A and 4B) are the business list. Apartment buildings are class 4C and are not in that list. This is not a collector’s bill.
Ratable base in Union Twp, typical class 2 assessment $492,756
Class 2 residential in the MOD-IV file: 1,826 parcels, average net assessment $492,756.
How assessments changed
Class 2 residential net assessments changed from $897,435,500 to $899,772,900, up 0.3%, on 1,826 parcels that have both a prior net and a 2026 net. This is the assessment roll, not an appraisal.
Among 61 usable recorded sales whose latest deed on this file is in 2025, the median price is $350,000. A $1 deed and a non-usable SR1A sale are left out. Each parcel stores one sale, so this is not every deed recorded that year.
Share of net assessed value by property class (MOD-IV). Not a school-quality rating.
| Class | Parcels | Net assessed | % of net |
|---|---|---|---|
| Residential 2 | 1,826 | $899,772,900 | 62.2% |
| Vacant land 1 | 190 | $342,588,500 | 23.7% |
| Commercial 4A | 72 | $143,416,800 | 9.9% |
| Industrial 4B | 4 | $8,539,300 | 0.6% |
| Apartment 4C | 1 | $950,000 | 0.1% |
| Farm (regular) 3A | 91 | $51,162,400 | 3.5% |
| Farm (qualified) 3B | 148 | $1,232,200 | 0.1% |
| Other / unclassified other | 35 | $0 | 0.0% |
Housing stock in Union Twp, median year built 1977
On the 2026 file, class 2 houses in Union Twp with a year built have a median year of 1977, about 49 years old. Of those 1,794 houses, the largest share was built 1960–1979. This is the assessor’s year built. It is not a ranking of towns.
By parcel count, Residential 77.1%, Vacant land 8.0%, Farm (qualified) 6.3%, Farm (regular) 3.8%, Commercial 3.0%, Other / unclassified 1.5%, Industrial 0.2%, Apartment <0.1%. Those percentages are a count of parcels, not a share of tax dollars. The class table uses the tax-base share.
Year built
Assessor building line
Grouped from the assessor’s building abbreviation. One-family, two-family, and condo are the codes that read clearly. Other codes stay in their own group. This is not a bedroom count, and square feet are left off because most records do not include them.