Commercial Real Estate Market in Green Brook, NJ
Updated monthly: sale, lease, property records, location trend, and more… · Last update: October 31
4 active listings and 162 off-market properties in Green Brook, NJ.
Market Trends
Green Brook, NJ spans 5.1 square miles in Middlesex County, New Jersey. Figures below refresh monthly; last updated 31 October 2026.
Office
Office vacancy in Green Brook, 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 Green Brook, 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 Green Brook, 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 Green Brook, NJ runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Market overview
Demographics & Economy
Green Brook, NJ has 14,593 residents in 4,916 households. Density runs 2,874 people per square mile. Median household income here is $119,534 and median gross rent $1,557 a month.
Tools
Nearby Markets
| Market | Median Asking Price, $/SF | Median Asking Rent, $/SF/Yr |
|---|---|---|
| Dunellen | $152 (county avg) | — |
| Warren | $276 | $17.45 |
| Middlesex | $303 | $16.00 |
| Plainfield | $240 | — |
Across Middlesex County, commercial property asks $152/SF. The 3 bordering markets run from $240/SF in Plainfield to $303/SF in Middlesex, and Middlesex County sits below their $276/SF median.
Frequently Asked Questions
What does commercial property cost per square foot in Green Brook?
How does Green Brook compare to nearby markets on price?
Where does Realmo's Green Brook market data come from?
Methodology & data sources
- Asking prices and medians
- There are 4 active for-sale and 0 active for-lease listings in Green Brook, NJ. The sale figure is the Middlesex County average, as too few listings here 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.
- 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 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
