West Windsor Twp NJ property tax rate 2025: 3.162
West Windsor Twp, Mercer County. 10,073 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.
West Windsor Twp at a glance
10,073 parcels are on the 2026 file. The 2025 general rate is 3.162, and the prior rate on file is 3.065 for 2024. A typical class 2 assessment is $522,396. Usable sales with a 2025 deed: 207, median $835,000. The state construction file lists 14,515 permits here. The median class 2 house was built in 1989. 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 West Windsor Twp bill
West Windsor Twp’s general rate of 3.162 is tax year 2025 on the 2026 assessment file. It is not a 2026 bill. The prior general rate on file is 3.065 for 2024. School, county, and municipal shares of this rate are 57.3%, 28.6%, and 14.1%. The largest slice is schools. In Mercer County the middle school share for rate year 2025 is 54.8% in Hopewell Boro. Class 2 net assessments changed from $4,309,327,800 to $4,430,960,400, up 2.8%, on 8,482 parcels. Usable sales with a 2025 deed: median $835,000 (207 sales). The largest class share of net assessed value is Residential at 61.7%. State school aid is outside these bars.
Building permits in West Windsor Twp
The New Jersey construction-permit file lists 14,515 permits in West Windsor 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 West Windsor Twp construction office.
2025 general tax rate in West Windsor Twp: 3.162
This general rate is tax year 2025. The assessment file is 2026. It is not a 2026 bill.
In Mercer County, the median municipality’s school share (rate year 2025) is 54.8%; this town is 57.3%. 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 Mercer towns · How NJ taxes work.
The school percent is the local property-tax levy. The district for this municipality is W Windsor-Plainsboro Reg (K-12), FY2027 K–12 aid $15,191,541. Those aid figures are not slices of these bars. Mercer district table.
Prior year (2024) general rate: 3.065.
Tax on a $200,000 or $500,000 sale in West Windsor Twp
These figures use West Windsor 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 65.83% would be assessed at about $329,150. At the general rate of 3.162, the estimated tax is $10,408. A $200,000 sale at that same ratio and rate would be assessed at about $131,660, with an estimated tax of $4,163.
In Mercer County for 2025, the $500,000 bill runs from $10,408 in West Windsor Twp to $17,708 in Trenton City. The middle bill is $12,107 in Pennington Boro. All Mercer towns.
See every New Jersey town on the same $200,000 and $500,000 sale for 2025.
Recent usable sales in West Windsor Twp
These are the five newest usable deeds on the 2026 file for West Windsor 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 |
|---|---|---|---|
| 9 CROMWELL CT | 12/8/2025 | $900,000 | $474,800 |
| 53 N POST RD | 12/5/2025 | $675,000 | $406,500 |
| 22 SLAYBACK DR | 12/5/2025 | $1,050,000 | $683,400 |
| 40 CALEB LANE | 11/18/2025 | $830,000 | $520,400 |
| 110 BISCAYNE CT #11 | 11/18/2025 | $460,000 | $256,800 |
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 West Windsor Twp: $64,116
Residential
The highest residential estimate in West Windsor Twp is $64,116 at 29 RABBIT HILL RD, on a net assessment of $2,027,700 and a 2025 general rate of 3.162.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 29 RABBIT HILL RD | 2 — Residential (four families or less) | $2,027,700 | 2025 | $64,116 |
| 1 DEY FARM DR | 2 — Residential (four families or less) | $1,961,100 | 2025 | $62,010 |
| 4 DEY FARM DR | 2 — Residential (four families or less) | $1,804,200 | 2025 | $57,049 |
| 17 DEY FARM ROAD | 2 — Residential (four families or less) | $1,695,200 | 2025 | $53,602 |
| 582 VILLAGE RD W | 2 — Residential (four families or less) | $1,473,100 | 2025 | $46,579 |
Business
The highest business estimate in West Windsor Twp is $1,517,760 at 1 UNIVERSITY SQUARE DR, on a net assessment of $48,000,000 and a 2025 general rate of 3.162.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 1 UNIVERSITY SQUARE DR | 4A — Commercial | $48,000,000 | 2025 | $1,517,760 |
| 3535 BRUNSWICK PK | 4A — Commercial | $46,250,000 | 2025 | $1,462,425 |
| 7 - 9 ROSZEL RD | 4A — Commercial | $45,000,000 | 2025 | $1,422,900 |
| 200-570 NASSAU PARK BLVD. | 4A — Commercial | $39,381,800 | 2025 | $1,245,253 |
| 3477 BRUNSWICK PK | 4A — Commercial | $35,000,000 | 2025 | $1,106,700 |
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 West Windsor Twp, typical class 2 assessment $522,396
Class 2 residential in the MOD-IV file: 8,482 parcels, average net assessment $522,396.
How assessments changed
Class 2 residential net assessments changed from $4,309,327,800 to $4,430,960,400, up 2.8%, on 8,482 parcels that have both a prior net and a 2026 net. This is the assessment roll, not an appraisal.
Among 207 usable recorded sales whose latest deed on this file is in 2025, the median price is $835,000. 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 | 8,482 | $4,430,960,400 | 61.7% |
| Vacant land 1 | 1,205 | $1,104,837,500 | 15.4% |
| Commercial 4A | 271 | $1,176,002,300 | 16.4% |
| Industrial 4B | 5 | $37,501,800 | 0.5% |
| Apartment 4C | 12 | $422,084,500 | 5.9% |
| Farm (regular) 3A | 24 | $10,687,500 | 0.1% |
| Farm (qualified) 3B | 60 | $762,800 | 0.0% |
| Other / unclassified other | 14 | $793,100 | 0.0% |
Housing stock in West Windsor Twp, median year built 1989
On the 2026 file, class 2 houses in West Windsor Twp with a year built have a median year of 1989, about 37 years old. Of those 8,058 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 84.2%, Vacant land 12.0%, Commercial 2.7%, Farm (qualified) 0.6%, Farm (regular) 0.2%, Other / unclassified 0.1%, Apartment 0.1%, Industrial <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.