Mountain Lakes Borough property taxes
Morris County, New Jersey · population 4,472
Typical home tax bill
- 20
- 21
- 22
- 23
- 24
- 25
Median of 1,445 homes (residential lots) in the state's assessment records. The tax rate is down 18.0% since 2020.
Assessments
Assessments were reset close to market value.
Mountain Lakes 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?
Mountain Lakes 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 Mountain Lakes Borough does a town-wide revaluation for 2027), or 45 days after assessment notices are mailed if that's later.
File with the Morris 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 Mountain Lakes Borough?
The typical (median) Mountain Lakes Borough home paid $20,745 in property taxes in 2024, based on 1,445 homes in New Jersey's assessment records. Half of homes paid more and half paid less.
What is the property tax rate in Mountain Lakes Borough?
The 2025 general tax rate is 2.299 per $100 of assessed value, down 3.7% 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 Mountain Lakes Borough have a revaluation?
Yes. Mountain Lakes 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 Mountain Lakes Borough?
The next deadline is April 1, 2027, or 45 days after assessment notices are mailed if that is later. If Mountain Lakes Borough does a town-wide revaluation for 2027, it moves to May 1, 2027. The petition has to be received by the Morris County Board of Taxation, not just postmarked.
How can Mountain Lakes 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 Mountain Lakes Borough?
- True cost of a homeThe monthly cost of any address, with its real tax bill.
- Mountain Lakes 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 Mountain Lakes Borough.
Nearby towns
- Boonton Town$11,590 typical bill
- Parsippany-Troy Hills Township$10,828 typical bill
- Denville Township$9,900 typical bill
- Boonton Township$12,006 typical bill
- Rockaway Borough$9,455 typical bill
- Morris Plains Borough$11,191 typical bill
- Montville Township$12,923 typical bill
- Hanover Township$8,605 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.