Commercial Real Estate Market in Williamstown, NJ
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
74 active listings and 809 off-market properties in Williamstown, NJ. Commercial property asks $168/SF to buy and $16.84/SF/Yr to lease.
Market Trends
Williamstown, NJ spans 54.8 square miles in Middlesex County, New Jersey. Figures below refresh monthly; last updated 30 September 2026.
Office
Office space in Williamstown, NJ asks $91/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 Williamstown, NJ asks $179/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 Williamstown, 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 Williamstown, NJ asks $317/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
Williamstown, NJ has 40,774 residents in 15,878 households. Density runs 744 people per square mile. Median household income here is $92,125 and median gross rent $1,420 a month.
40,774
Population
15,878
Households
2.6
Avg Household Size
41
Median Age
28%
College-Educated
94%
High-School Grad
54.8 sq mi
ZIP Area
744
Density / Sq Mi
$92,125
Median Household Income
$52,681
Median Earnings
$1,420
Median Rent
$260,200
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Berlin | — | $14.58 |
| Erial | — | $16.62 |
| Glassboro | — | $20.62 |
Commercial property in Williamstown, NJ asks $168/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Williamstown?
Commercial property in Williamstown, NJ asks an average of $168 per square foot. Multifamily carries the highest asking price at $317/SF.
How much does it cost to lease commercial space in Williamstown?
Asking lease rates in Williamstown, NJ average $16.84 per square foot per year.
Where does Realmo's Williamstown market data come from?
Realmo compiles Williamstown, NJ figures from 6 recent recorded sales, 63 active sale listings, 11 active lease listings, 809 tracked off-market properties. Sale and lease figures refresh monthly; vacancy annually. Last updated 30 September 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 63 active for-sale and 11 active for-lease listings in Williamstown, 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 30 September 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 30 September 2026 · How Realmo checks market page data · Report a data issue
