Mount Olive Twp NJ property tax rate 2025: 3.366
Mount Olive Twp, Morris County. 9,126 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.
Mount Olive Twp at a glance
9,126 parcels are on the 2026 file. The 2025 general rate is 3.366, and the prior rate on file is 3.385 for 2024. A typical class 2 assessment is $324,487. Usable sales with a 2025 deed: 214, median $610,000. The state construction file lists 6,870 permits here. The median class 2 house was built in 1978. 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 Mount Olive Twp bill
Mount Olive Twp’s general rate of 3.366 is tax year 2025 on the 2026 assessment file. It is not a 2026 bill. The prior general rate on file is 3.385 for 2024. School, county, and municipal shares of this rate are 68.7%, 10.3%, and 21.1%. The largest slice is schools. In Morris County the middle school share for rate year 2025 is 62.9% in Netcong Boro. Class 2 net assessments changed from $2,338,521,700 to $2,346,040,500, up 0.3%, on 7,230 parcels. Usable sales with a 2025 deed: median $610,000 (214 sales). The largest class share of net assessed value is Residential at 62.0%. State school aid is outside these bars.
Building permits in Mount Olive Twp
The New Jersey construction-permit file lists 6,870 permits in Mount Olive 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 Mount Olive Twp construction office.
2025 general tax rate in Mount Olive Twp: 3.366
This general rate is tax year 2025. The assessment file is 2026. It is not a 2026 bill.
In Morris County, the median municipality’s school share (rate year 2025) is 62.9%; this town is 68.7%. 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 Morris towns · How NJ taxes work.
The school percent is the local property-tax levy. The district for this municipality is Mount Olive Twp (K-12), FY2027 K–12 aid $39,187,919. Those aid figures are not slices of these bars. Morris district table.
Prior year (2024) general rate: 3.385.
Tax on a $200,000 or $500,000 sale in Mount Olive Twp
These figures use Mount Olive 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 70.70% would be assessed at about $353,500. At the general rate of 3.366, the estimated tax is $11,899. A $200,000 sale at that same ratio and rate would be assessed at about $141,400, with an estimated tax of $4,760.
In Morris County for 2025, the $500,000 bill runs from $4,917 in Harding Twp to $14,240 in Netcong Boro. The middle bill is $9,881 in Chester Boro. All Morris towns.
See every New Jersey town on the same $200,000 and $500,000 sale for 2025.
Recent usable sales in Mount Olive Twp
These are the five newest usable deeds on the 2026 file for Mount Olive 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 |
|---|---|---|---|
| 24 RAMAR ST | 12/23/2025 | $599,000 | $297,300 |
| 380 ROUTE 206 | 12/22/2025 | $990,000 | $599,800 |
| 1 BRIDLE LN | 12/17/2025 | $500,000 | $259,600 |
| 5 NEW ST | 12/15/2025 | $620,000 | $356,600 |
| 81 CLINTON AVE | 12/15/2025 | $739,000 | $390,700 |
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 Mount Olive Twp: $31,657
Residential
The highest residential estimate in Mount Olive Twp is $31,657 at 104 RIVER RD, on a net assessment of $940,500 and a 2025 general rate of 3.366.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 104 RIVER RD | 2 — Residential (four families or less) | $940,500 | 2025 | $31,657 |
| 33 SOVEREIGN DR | 2 — Residential (four families or less) | $895,000 | 2025 | $30,126 |
| 8 DEBORAH CT | 2 — Residential (four families or less) | $845,100 | 2025 | $28,446 |
| 6 STARK CT | 2 — Residential (four families or less) | $820,700 | 2025 | $27,625 |
| 17 MARCIN WAY | 2 — Residential (four families or less) | $809,900 | 2025 | $27,261 |
Business
The highest business estimate in Mount Olive Twp is $2,625,480 at 703 BARTLEY-CHESTER RD, on a net assessment of $78,000,000 and a 2025 general rate of 3.366.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 703 BARTLEY-CHESTER RD | 4B — Industrial | $78,000,000 | 2025 | $2,625,480 |
| 3000 CONTINENTAL DR | 4B — Industrial | $48,572,600 | 2025 | $1,634,954 |
| 62 FLANDERS-BARTLEY RD | 4A — Commercial | $29,910,900 | 2025 | $1,006,801 |
| 350 CLARK DR | 4B — Industrial | $28,500,000 | 2025 | $959,310 |
| 650 INTERNATIONAL DR | 4B — Industrial | $20,822,400 | 2025 | $700,882 |
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 Mount Olive Twp, typical class 2 assessment $324,487
Class 2 residential in the MOD-IV file: 7,230 parcels, average net assessment $324,487.
How assessments changed
Class 2 residential net assessments changed from $2,338,521,700 to $2,346,040,500, up 0.3%, on 7,230 parcels that have both a prior net and a 2026 net. This is the assessment roll, not an appraisal.
Among 214 usable recorded sales whose latest deed on this file is in 2025, the median price is $610,000. 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 | 7,230 | $2,346,040,500 | 62.0% |
| Vacant land 1 | 1,380 | $299,291,500 | 7.9% |
| Commercial 4A | 317 | $411,961,800 | 10.9% |
| Industrial 4B | 69 | $413,759,400 | 10.9% |
| Apartment 4C | 7 | $301,386,300 | 8.0% |
| Farm (regular) 3A | 32 | $11,136,500 | 0.3% |
| Farm (qualified) 3B | 88 | $962,000 | 0.0% |
| Other / unclassified other | 3 | $0 | 0.0% |
Housing stock in Mount Olive Twp, median year built 1978
On the 2026 file, class 2 houses in Mount Olive Twp with a year built have a median year of 1978, about 48 years old. Of those 7,171 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 79.2%, Vacant land 15.1%, Commercial 3.5%, Farm (qualified) 1.0%, Industrial 0.8%, Farm (regular) 0.4%, Apartment <0.1%, Other / unclassified <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.