Commercial Real Estate Market in Islip, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
11 active listings and 285 off-market properties in Islip, NY. Commercial property asks $273/SF to buy and $20.00/SF/Yr to lease.
Market Trends
Islip, NY spans 4.0 square miles in Suffolk County, New York. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in 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 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 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 Islip, NY runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Vacancy Rate % in Northeast region
Zoning & Land Use
Land Use Mix share of zoned land by category
- Civic 61.2%
- Residential 25.6%
- Industrial 8.3%
- Commercial 3.1%
- Planned_development 1.3%
- Special 0.3%
- Open space 0.1%
Largest Zones share of zoned land by district
Residence
Residence
Residence
Residence
Residence
Residence (BAA)
BAA District, Article XI . § 68-59.3 Permitted uses. A. In a Residence AAAB District, no building, structure or premises shall be used or occupied and no building or part thereof or other structure shall be so erected or altered except for one or more of the following purposes: (1) Single-family detached dwellings. (2) Municipal park, municipal playground or…
Market overview
Demographics & Economy
Islip, NY has 14,790 residents in 5,246 households. Density runs 3,731 people per square mile. Median household income here is $116,328 and median gross rent $2,238 a month.
14,790
Population
5,246
Households
2.8
Avg Household Size
43
Median Age
36%
College-Educated
88%
High-School Grad
4 sq mi
ZIP Area
3,731
Density / Sq Mi
$116,328
Median Household Income
$59,558
Median Earnings
$2,238
Median Rent
$501,900
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Bayshore | — | $36.00 |
| Islip Manor | — | — |
Commercial property in Islip, NY asks $273/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Islip?
Commercial property in Islip, NY asks an average of $273 per square foot.
How much does it cost to lease commercial space in Islip?
Asking lease rates in Islip, NY average $20.00 per square foot per year.
Where does Realmo's Islip market data come from?
Realmo compiles Islip, NY figures from 3 recent recorded sales, 7 active sale listings, 4 active lease listings, 285 tracked off-market properties, the current Islip zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 30 September 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 7 active for-sale and 4 active for-lease listings in 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.
- Zoning and land use
- The current municipal zoning release: 83,035 zoned acres across 50 districts. Shares are of zoned land, so parcels the release leaves unclassified are excluded from the mix.
- 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
