Commercial Real Estate Market in South River, NJ
Updated monthly: sale, lease, property records, location trend, and more… · Last update: October 31
10 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 October 2026.
Office
Office vacancy in South River, NJ runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Retail
Across Middlesex County, retail space asks $170/SF to buy. Retail vacancy in South River, NJ runs 6% across the Northeast region in 2025, little changed from 6% in 2019. Down from a 2020 peak of 7.1%.
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%.
Multifamily
Across Middlesex County, multifamily space asks $318/SF to buy. Multifamily vacancy in South River, NJ runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
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.
Tools
Nearby Markets
| Market | Median Asking Price, $/SF | Median Asking Rent, $/SF/Yr |
|---|---|---|
| East Brunswick | $281 | $25.35 |
| Sayreville | $325 | $14.71 |
| Milltown | $318 | $18.70 |
| Spotswood | $334 | $9.66 |
Commercial property in South River, NJ asks $222/SF. The 4 bordering markets run from $281/SF in East Brunswick to $334/SF in Spotswood, and the city sits below their $322/SF median.
Frequently Asked Questions
What is the median price per square foot for commercial property in South River?
How does South River compare to nearby markets on price?
Where does Realmo's South River market data come from?
Methodology & data sources
- Asking prices and medians
- There are 10 active for-sale and 0 active for-lease listings in South River, NJ. The sale median is based on 7 of the for-sale listings that state a price per square foot; too few for-lease listings state a rent per square foot for a rent median. These are ASKING figures from live listings, not closed-transaction prices, and a figure resting on fewer than 10 listings says so where it is quoted.
- 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 October 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 October 2026 · How Realmo checks market page data · Report a data issue
