Commercial Real Estate Market in South River, NJ
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
9 active listings and 209 off-market properties in South River, NJ.
Market Trends
South River, NJ spans 2.8 square miles in Middlesex County, New Jersey. Figures below refresh monthly; last updated 31 August 2026.
Office
Office space in South River, NJ asks $109/SF to buy. Vacancy runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Average Sale Price $/SF
Listings
Vacancy Rate % in Northeast region
Retail
Retail space in South River, NJ asks $136/SF to buy. Vacancy runs 6% across the Northeast region in 2025, little changed from 6% in 2019. Down from a 2020 peak of 7.1%.
Average Sale Price $/SF
Listings
Vacancy Rate % in Northeast region
Industrial
Industrial vacancy in South River, NJ runs 7.6% across the Northeast region in 2025, up from 5.4% in 2019. Nearly 2.4x the 2021 low of 3.2%.
Vacancy Rate % in Northeast region
Multifamily
Multifamily space in South River, NJ asks $307/SF to buy. Vacancy runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Average Sale Price $/SF
Listings
Vacancy Rate % in Northeast region
Market overview
Demographics & Economy
South River, NJ has 16,118 residents in 5,789 households. Density runs 5,756 people per square mile. Median household income here is $101,853 and median gross rent $1,599 a month.
16,118
Population
5,789
Households
2.8
Avg Household Size
39
Median Age
31%
College-Educated
86%
High-School Grad
2.8 sq mi
ZIP Area
5,756
Density / Sq Mi
$101,853
Median Household Income
$51,323
Median Earnings
$1,599
Median Rent
$382,500
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| East Brunswick | $171 (county avg) | $18.40 |
| Sayreville | $171 (county avg) | $19.82 |
| Milltown | $171 (county avg) | $21.19 |
| Spotswood | $171 (county avg) | $6.36 |
Commercial property in South River, NJ asks $171/SF. The 4 bordering markets run from $171/SF in East Brunswick to $171/SF in East Brunswick, and the city sits in line with their $171/SF median.
Frequently Asked Questions
What is the average price per square foot for commercial property in South River?
Commercial property in South River, NJ asks an average of $171 per square foot. The 6 most recent recorded sales traded at a median of $152/SF, so asking sits 12% above the achieved median. Multifamily carries the highest asking price at $307/SF.
How does South River compare to nearby markets on price?
South River, NJ asks $171/SF against $171/SF in East Brunswick, $171/SF in Sayreville, $171/SF in Milltown and $171/SF in Spotswood.
Where does Realmo's South River market data come from?
Realmo compiles South River, NJ figures from 6 recent recorded sales, 9 active sale listings, 209 tracked off-market properties. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 August 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 9 active for-sale and 0 active for-lease listings in South River, NJ. These are ASKING figures from live listings, not closed-transaction prices, and a segment carried by a handful of listings reads as indicative rather than an average.
- Price per square foot
- The county-level $/SF blends closed sales aggregated over the trailing months of available data, not a single day's snapshot — it can differ from any one month's own median.
- Vacancy rates
- Published per-sector market series, taken at the metro level where one exists and otherwise at the Census-region level — a chart reading "in <region> region" is a regional number, not this city's.
- Refresh
- The monthly aggregates close at the end of the previous month, so 31 August 2026 — not today — is the honest last update.
- Known limitations
- office vacancy is reported at Northeast region level, retail vacancy is reported at Northeast region level and industrial vacancy is reported at Northeast region level.
- Coverage
- Metrics below the 10-observation threshold fall back one geographic level. The geography used is named on each figure.
Compiled by the Realmo Data team · reviewed 31 August 2026 · report a data issue
