Dunellen Borough property taxes
Middlesex County, New Jersey · population 7,637
Typical home tax bill
- 20
- 21
- 22
- 23
- 24
- 25
Median of 1,936 homes (residential lots) in the state's assessment records. The tax rate is down 24.6% since 2020.
Assessments
Assessments were reset close to market value.
Dunellen Borough is on the state's 2026 list of town-wide revaluations and reassessments. The 2026 bill is the first one on the new values.
Is your assessment too high?
Dunellen Borough had a town-wide revaluation for 2026, so assessments should be close to market value. If yours is higher than what your home was worth, you may have an appeal case.
Appeal deadline
April 1, 2027 (May 1, 2027 if Dunellen Borough does a town-wide revaluation for 2027), or 45 days after assessment notices are mailed if that's later.
File with the Middlesex County Board of Taxation. The petition has to arrive by the deadline; a postmark isn't enough. Homes assessed over $1 million can go straight to the Tax Court.
Questions
What is the average property tax bill in Dunellen Borough?
The typical (median) Dunellen Borough home paid $10,850 in property taxes in 2024, based on 1,936 homes in New Jersey's assessment records. Half of homes paid more and half paid less.
What is the property tax rate in Dunellen Borough?
The 2025 general tax rate is 2.448 per $100 of assessed value, down 2.4% from 2024. Your bill is your assessment divided by 100, times the rate. Compare towns by bills, not rates, because towns assess at different levels.
Did Dunellen Borough have a revaluation?
Yes. Dunellen Borough is on the state's list of 2026 town-wide revaluations and reassessments, so assessments were reset to close to market value for 2026. In a revaluation year the Chapter 123 ratio test does not apply; an appeal has to show the assessment is higher than what the home was worth.
When is the property tax appeal deadline in Dunellen Borough?
The next deadline is April 1, 2027, or 45 days after assessment notices are mailed if that is later. If Dunellen Borough does a town-wide revaluation for 2027, it moves to May 1, 2027. The petition has to be received by the Middlesex County Board of Taxation, not just postmarked.
How can Dunellen Borough homeowners lower their property taxes?
Check that your assessment isn't too high (the checker on this page does the math), and apply for New Jersey's relief programs: ANCHOR for homeowners and renters, Stay NJ for seniors 65 and older, and the Senior Freeze. Watchdog's free benefit estimator shows which ones fit.
Property tax relief
- ANCHORA yearly benefit for New Jersey homeowners and renters under the income limits.
- Stay NJHomeowners 65 and older can get up to half of the bill back, up to a cap.
- Senior FreezePays back increases for eligible seniors and people with disabilities.
- Stack themSee how the programs work together for one household.
Buying or selling in Dunellen Borough?
- True cost of a homeThe monthly cost of any address, with its real tax bill.
- Dunellen Borough CO requirementsResale Certificate of Occupancy and smoke/CO alarm rules, fees and timing.
- Appeal savings estimatorWhat a lower assessment would save each year.
Real estate agent? Copy this page's link for buyers and sellers in Dunellen Borough.
Nearby towns
- Green Brook Township$12,454 typical bill
- Middlesex Borough$9,667 typical bill
- North Plainfield Borough$10,235 typical bill
- South Plainfield Borough$8,190 typical bill
- Piscataway Township$8,136 typical bill
- Plainfield City$9,186 typical bill
- Warren Township$15,444 typical bill
- Watchung Borough$15,323 typical bill
Sources: typical bills and assessments are medians of residential lots in New Jersey's MOD-IV assessment records (2024 bills). Tax rates: NJ Division of Taxation, General Tax Rates by County and Municipality. Assessment ratios: NJ Division of Taxation, 2026 Chapter 123 ratios. Revaluations: 2026 approved revaluations and reassessments. This page is general information, not legal or tax advice.