South Brunswick Twp NJ property tax rate 2025: 5.578
South Brunswick Twp, Middlesex County. 15,991 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.
How to read a South Brunswick Twp bill
South Brunswick Twp’s general rate of 5.578 is tax year 2025 on the 2026 assessment file. It is not a 2026 bill. The prior general rate on file is 5.357 for 2024. School, county, and municipal shares of this rate are 59.1%, 17.9%, and 23.1%. The largest slice is schools. In Middlesex County the middle school share for rate year 2025 is 54.6% in South Plainfield Boro. Class 2 net assessments changed from $2,621,114,200 to $2,632,274,900, up 0.4%, on 13,355 parcels. Usable sales with a 2025 deed: median $625,000 (305 sales). The largest class share of net assessed value is Residential at 55.5%. State school aid is outside these bars.
South Brunswick Twp at a glance
15,991 parcels are on the 2026 file. The 2025 general rate is 5.578, and the prior rate on file is 5.357 for 2024. A typical class 2 assessment is $197,100. Usable sales with a 2025 deed: 305, median $625,000. The state construction file lists 18,511 permits here. The median class 2 house was built in 1986. The Census Bureau’s 2019–2023 American Community Survey counts 46,686 people and 17,134 housing units in South Brunswick township. A property page adds that parcel’s permits, flood zone, mapped flood elevation, and high and low ground. It also says what soil the state mapped, whether the 2012 map shows a wetland, and whether the address is in the Pinelands, the Highlands, or the coastal zone. It names a historic district only when the address is inside one. Owner names are not shown.
The shape of the ground in South Brunswick Twp
South Brunswick Twp sits on the state’s 10-foot ground scan, from LiDAR flown between 2014 and 2019. The Middlesex County page opens that scan as a hillshade you can pan and zoom. Darker cuts are lower. Lighter ground is higher. A property page in South Brunswick Twp opens the same scan on that address. The lowest and highest 10-foot cell stay as numbers. The picture does not mark those two cells. It is not a survey and not a slope in degrees.
Building permits in South Brunswick Twp
The New Jersey construction-permit file lists 18,511 permits in South Brunswick 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 South Brunswick Twp construction office.
2025 general tax rate in South Brunswick Twp: 5.578
This general rate is tax year 2025. The assessment file is 2026. It is not a 2026 bill.
In Middlesex County, the median municipality’s school share (rate year 2025) is 54.6%; this town is 59.1%. 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 Middlesex towns · How NJ taxes work.
The school percent is the local property-tax levy. The district for this municipality is South Brunswick Twp (K-12), FY2027 K–12 aid $13,432,200. Those aid figures are not slices of these bars. Middlesex district table.
Prior year (2024) general rate: 5.357.
Tax on a $200,000 or $500,000 sale in South Brunswick Twp
These figures use South Brunswick 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 34.80% would be assessed at about $174,000. At the general rate of 5.578, the estimated tax is $9,706. A $200,000 sale at that same ratio and rate would be assessed at about $69,600, with an estimated tax of $3,882.
In Middlesex County for 2025, the $500,000 bill runs from $4,625 in Carteret Boro to $13,615 in Highland Park Boro. The middle bill is $10,575 in New Brunswick City. All Middlesex towns.
See every New Jersey town on the same $200,000 and $500,000 sale for 2025.
Recent usable sales in South Brunswick Twp
These are the five newest usable deeds on the 2026 file for South Brunswick 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 |
|---|---|---|---|
| 6 OXFORD COURT | 12/28/2025 | $910,000 | $237,100 |
| 4432 ROUTE #27 | 12/19/2025 | $800,000 | $236,700 |
| 209 GAMBOCZ COURT | 12/18/2025 | $480,000 | $109,600 |
| 303 BLOSSOM CIRCLE | 12/12/2025 | $570,000 | $146,400 |
| 16 BARBARA STREET | 12/11/2025 | $730,000 | $202,500 |
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 South Brunswick Twp, 2025 rate: $79,347
Residential
The highest residential estimate in South Brunswick Twp is $79,347 at GRIGGS DRIVE, on a net assessment of $1,422,500 and a 2025 general rate of 5.578.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| GRIGGS DRIVE | 2 — Residential (four families or less) | $1,422,500 | 2025 | $79,347 |
| 14 SPRUCE LANE | 2 — Residential (four families or less) | $794,900 | 2025 | $44,340 |
| 86 HAYPRESS ROAD | 2 — Residential (four families or less) | $747,600 | 2025 | $41,701 |
| 20A TULSA COURT | 2 — Residential (four families or less) | $745,400 | 2025 | $41,578 |
| 12 PONTY COURT | 2 — Residential (four families or less) | $740,100 | 2025 | $41,283 |
Business
The highest business estimate in South Brunswick Twp is $7,561,163 at 192-294 RIDGE ROAD, on a net assessment of $135,553,300 and a 2025 general rate of 5.578.
| Address | Class | Net assessment | Rate year | Estimated tax |
|---|---|---|---|---|
| 192-294 RIDGE ROAD | 4B — Industrial | $135,553,300 | 2025 | $7,561,163 |
| 340 MIDDLESEX CENTER BLVD | 4B — Industrial | $30,707,100 | 2025 | $1,712,842 |
| 2349-2353 US ROUTE #130 | 4B — Industrial | $25,402,000 | 2025 | $1,416,924 |
| 4300 US ROUTE #1 | 4A — Commercial | $23,038,000 | 2025 | $1,285,060 |
| 204 DOCKS CORNER ROAD | 4B — Industrial | $21,496,200 | 2025 | $1,199,058 |
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 South Brunswick Twp, typical class 2 assessment $197,100
Class 2 residential in the MOD-IV file: 13,355 parcels, average net assessment $197,100.
How assessments changed
Class 2 residential net assessments changed from $2,621,114,200 to $2,632,274,900, up 0.4%, on 13,355 parcels that have both a prior net and a 2026 net. This is the assessment roll, not an appraisal.
Among 305 usable recorded sales whose latest deed on this file is in 2025, the median price is $625,000. 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 | 13,355 | $2,632,274,900 | 55.5% |
| Vacant land 1 | 1,768 | $530,250,700 | 11.2% |
| Commercial 4A | 395 | $337,252,700 | 7.1% |
| Industrial 4B | 199 | $1,136,520,500 | 23.9% |
| Apartment 4C | 17 | $97,922,600 | 2.1% |
| Farm (regular) 3A | 54 | $10,899,100 | 0.2% |
| Farm (qualified) 3B | 193 | $1,383,400 | 0.0% |
| Other / unclassified other | 10 | $0 | 0.0% |
Housing stock in South Brunswick Twp, median year built 1986
On the 2026 file, class 2 houses in South Brunswick Twp with a year built have a median year of 1986, about 40 years old. Of those 11,634 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 83.5%, Vacant land 11.1%, Commercial 2.5%, Industrial 1.2%, Farm (qualified) 1.2%, Farm (regular) 0.3%, 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.