Commercial Real Estate Market in West Islip, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
10 active listings and 238 off-market properties in West Islip, NY. Commercial property asks $3,379/SF to buy and $26.73/SF/Yr to lease.
Market Trends
West Islip, NY spans 5.7 square miles in Suffolk County, New York. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in West Islip, 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 West Islip, 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 West Islip, 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 West Islip, NY runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Vacancy Rate % in Northeast region
Market overview
Demographics & Economy
West Islip, NY has 25,344 residents in 8,166 households. Density runs 4,453 people per square mile. Median household income here is $171,068 and median gross rent $2,660 a month.
25,344
Population
8,166
Households
3.1
Avg Household Size
43
Median Age
51%
College-Educated
96%
High-School Grad
5.7 sq mi
ZIP Area
4,453
Density / Sq Mi
$171,068
Median Household Income
$67,874
Median Earnings
$2,660
Median Rent
$598,800
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Babylon | — | $32.96 |
| Islip Manor | — | — |
| Bayshore | — | $36.00 |
| North Lindenhurst | — | $62.77 |
Commercial property in West Islip, NY asks $3,379/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in West Islip?
Commercial property in West Islip, NY asks an average of $3,379 per square foot.
How much does it cost to lease commercial space in West Islip?
Asking lease rates in West Islip, NY average $26.73 per square foot per year.
Where does Realmo's West Islip market data come from?
Realmo compiles West Islip, NY figures from 8 recent recorded sales, 6 active sale listings, 4 active lease listings, 238 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 6 active for-sale and 4 active for-lease listings in West Islip, 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
