Commercial Real Estate Market in South Setauket, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
27 active listings and 251 off-market properties in South Setauket, NY. Commercial property asks $354/SF to buy and $40.13/SF/Yr to lease.
Market Trends
South Setauket, NY spans 8.2 square miles in Suffolk County, New York. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in South Setauket, NY runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Vacancy Rate % in Northeast region
Retail
Retail vacancy in South Setauket, NY runs 6% across the Northeast region in 2025, little changed from 6% in 2019. Down from a 2020 peak of 7.1%.
Vacancy Rate % in Northeast region
Industrial
Industrial vacancy in South Setauket, NY 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 vacancy in South Setauket, NY runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Vacancy Rate % in Northeast region
Market overview
Demographics & Economy
South Setauket, NY has 28,623 residents in 9,407 households. Density runs 3,479 people per square mile. Median household income here is $128,015 and median gross rent $2,377 a month.
28,623
Population
9,407
Households
3
Avg Household Size
41
Median Age
35%
College-Educated
92%
High-School Grad
8.2 sq mi
ZIP Area
3,479
Density / Sq Mi
$128,015
Median Household Income
$57,874
Median Earnings
$2,377
Median Rent
$471,600
Median Home Value
Tools
Frequently Asked Questions
What is the average price per square foot for commercial property in South Setauket?
Commercial property in South Setauket, NY asks an average of $354 per square foot.
How much does it cost to lease commercial space in South Setauket?
Asking lease rates in South Setauket, NY average $40.13 per square foot per year.
Where does Realmo's South Setauket market data come from?
Realmo compiles South Setauket, NY figures from 7 recent recorded sales, 10 active sale listings, 17 active lease listings, 251 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 10 active for-sale and 17 active for-lease listings in South Setauket, NY. 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.
- 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 · report a data issue
