Green Brook Twp NJ property tax rate 2025: 2.125 after reassessment
Green Brook Twp, Somerset County. 2,807 parcels in the MOD-IV 2026 file. Rate shown is tax year 2025 (latest available — not yet matched to assessment year).
2026 revaluation/reassessment town — 2026 general tax rate not in our warehouse yet. Showing 2025 rate against 2026 assessments; YoY % is withheld until the matching rate posts.
Green Brook Twp at a glance
2,807 parcels are on the 2026 file. The 2025 general rate is 2.125, and the prior rate on file is 2.214 for 2024. A typical class 2 assessment is $758,567. Usable sales with a 2025 deed: 75, median $675,000. The state construction file lists 2,799 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 Green Brook Twp bill
Green Brook Twp’s general rate of 2.125 is tax year 2025 on the 2026 assessment file. It is not a 2026 bill. The prior general rate on file is 2.214 for 2024. This municipality is on the 2026 reassessment list, so the rate move is the roll being reset. It is not, by itself, the change in the bill. School, county, and municipal shares of this rate are 63.5%, 16.2%, and 20.3%. The largest slice is schools. In Somerset County the middle school share for rate year 2025 is 58.5% in Somerville Boro. Class 2 net assessments changed from $1,638,580,400 to $1,782,633,500, up 8.8%, on 2,350 parcels. Usable sales with a 2025 deed: median $675,000 (75 sales). The largest class share of net assessed value is Residential at 79.0%. State school aid is outside these bars.
Building permits in Green Brook Twp
The New Jersey construction-permit file lists 2,799 permits in Green Brook 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 Green Brook Twp construction office.
2025 general tax rate in Green Brook Twp: 2.125
This general rate is tax year 2025. The assessment file is 2026. It is not a 2026 bill.
In Somerset County, the median municipality’s school share (rate year 2025) is 58.5%; this town is 63.5%. 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 Somerset towns · How NJ taxes work.
The school percent is the local property-tax levy. The district for this municipality is Green Brook Twp (K-12), FY2027 K–12 aid $1,868,407. Those aid figures are not slices of these bars. Somerset district table.
Prior year (2024) general rate: 2.214.
Tax on a $200,000 or $500,000 sale in Green Brook Twp
These figures use Green Brook 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 97.07% would be assessed at about $485,350. At the general rate of 2.125, the estimated tax is $10,314. A $200,000 sale at that same ratio and rate would be assessed at about $194,140, with an estimated tax of $4,125.
In Somerset County for 2025, the $500,000 bill runs from $5,800 in Far Hills Boro to $13,292 in So Bound Brook Boro. The middle bill is $9,373 in Hillsborough Twp. All Somerset towns.
See every New Jersey town on the same $200,000 and $500,000 sale for 2025.
Recent usable sales in Green Brook Twp
These are the five newest usable deeds on the 2026 file for Green Brook 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 |
|---|---|---|---|
| 1223 KING COURT | 12/30/2025 | $390,000 | $406,700 |
| 22 BRANDYWINE RISE | 12/30/2025 | $883,000 | $893,800 |
| 13 REMROSE LEDGE | 12/29/2025 | $700,000 | $657,600 |
| 11 WICHSER LANE | 12/29/2025 | $75,000 | $66,000 |
| 115 JEFFERSON AVE | 12/22/2025 | $495,000 | $468,800 |
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 Green Brook Twp: $61,963
Residential
The highest residential estimate in Green Brook Twp is $61,963 at 28 DEER RUN, on a net assessment of $2,915,900 and a 2025 general rate of 2.125.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 28 DEER RUN | 2 — Residential (four families or less) | $2,915,900 | 2025 | $61,963 |
| 130 DEER RUN | 2 — Residential (four families or less) | $2,892,400 | 2025 | $61,464 |
| 69 ROCK ROAD WEST | 2 — Residential (four families or less) | $2,728,500 | 2025 | $57,981 |
| 114 ROCK ROAD WEST | 2 — Residential (four families or less) | $2,569,300 | 2025 | $54,598 |
| 36 DEER RUN | 2 — Residential (four families or less) | $2,502,300 | 2025 | $53,174 |
Business
The highest business estimate in Green Brook Twp is $340,000 at 208-224 ROUTE 22 WEST, on a net assessment of $16,000,000 and a 2025 general rate of 2.125.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 208-224 ROUTE 22 WEST | 4A — Commercial | $16,000,000 | 2025 | $340,000 |
| 107-117 ROUTE 22 EAST | 4A — Commercial | $12,750,000 | 2025 | $270,938 |
| 293-305 ROUTE 22 EAST | 4A — Commercial | $11,000,000 | 2025 | $233,750 |
| 97-105 ROUTE 22 EAST | 4A — Commercial | $9,800,000 | 2025 | $208,250 |
| 303 ROCK AVE. | 4A — Commercial | $9,288,500 | 2025 | $197,381 |
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 Green Brook Twp, typical class 2 assessment $758,567
Class 2 residential in the MOD-IV file: 2,350 parcels, average net assessment $758,567.
How assessments changed
Class 2 residential net assessments changed from $1,638,580,400 to $1,782,633,500, up 8.8%, on 2,350 parcels that have both a prior net and a 2026 net. This is the reassessment roll. It is not the change in the tax bill.
Among 75 usable recorded sales whose latest deed on this file is in 2025, the median price is $675,000. 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 | 2,350 | $1,782,633,500 | 79.0% |
| Vacant land 1 | 250 | $132,756,200 | 5.9% |
| Commercial 4A | 181 | $300,682,700 | 13.3% |
| Industrial 4B | 8 | $16,357,000 | 0.7% |
| Apartment 4C | 11 | $21,850,000 | 1.0% |
| Farm (regular) 3A | 2 | $800,000 | 0.0% |
| Farm (qualified) 3B | 4 | $24,500 | 0.0% |
| Other / unclassified other | 1 | $100 | 0.0% |
Housing stock in Green Brook Twp, median year built 1977
On the 2026 file, class 2 houses in Green Brook Twp with a year built have a median year of 1977, about 49 years old. Of those 2,341 houses, the largest share was built 1980–1999. This is the assessor’s year built. It is not a ranking of towns.
By parcel count, Residential 83.7%, Vacant land 8.9%, Commercial 6.4%, Apartment 0.4%, Industrial 0.3%, Farm (qualified) 0.1%, Farm (regular) <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.