Commercial Real Estate Market in Port Jefferson, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
43 active listings and 717 off-market properties in Port Jefferson, NY. Commercial property asks $810/SF to buy and $150.00/SF/Yr to lease.
Market Trends
Port Jefferson, NY spans 4.4 square miles in Suffolk County, New York. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in Port Jefferson, 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 Port Jefferson, 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 Port Jefferson, 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 Port Jefferson, NY runs 5.6% across the Northeast region in 2025, up from 4% in 2022.
Vacancy Rate % in Northeast region
Market overview
Demographics & Economy
Port Jefferson, NY has 9,346 residents in 3,893 households. Density runs 2,128 people per square mile. Median household income here is $148,519 and median gross rent $2,261 a month.
9,346
Population
3,893
Households
2.4
Avg Household Size
46
Median Age
69%
College-Educated
97%
High-School Grad
4.4 sq mi
ZIP Area
2,128
Density / Sq Mi
$148,519
Median Household Income
$72,042
Median Earnings
$2,261
Median Rent
$655,900
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Mount Sinai | — | — |
| Prt Jefferson Station | — | — |
Commercial property in Port Jefferson, NY asks $810/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Port Jefferson?
Commercial property in Port Jefferson, NY asks an average of $810 per square foot.
How much does it cost to lease commercial space in Port Jefferson?
Asking lease rates in Port Jefferson, NY average $150.00 per square foot per year.
Where does Realmo's Port Jefferson market data come from?
Realmo compiles Port Jefferson, NY figures from 7 recent recorded sales, 31 active sale listings, 12 active lease listings, 717 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 31 active for-sale and 12 active for-lease listings in Port Jefferson, 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
