Commercial Real Estate Market in Wellesley Island, NY
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
1 active listing and 20 off-market properties in Wellesley Island, NY.
Market Trends
Wellesley Island, NY spans 12.3 square miles in Jefferson County, New York. Figures below refresh monthly; last updated 31 August 2026.
Office
Office vacancy in Wellesley Island, 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 Wellesley Island, 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 Wellesley Island, 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 space in Wellesley Island, NY asks $78/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
Wellesley Island, NY has 348 residents in 810 households. Density runs 28 people per square mile. Median household income here is $92,422.
348
Population
810
Households
0.4
Avg Household Size
62
Median Age
59%
College-Educated
100%
High-School Grad
12.3 sq mi
ZIP Area
28
Density / Sq Mi
$92,422
Median Household Income
$62,159
Median Earnings
$0
Median Rent
$330,500
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Thousand Island Park | — | — |
| Fishers Landing | — | — |
| Murray Isle | — | — |
| Westminster Park | — | — |
Methodology & data sources
- Asking prices and averages
- Computed from 1 active for-sale and 0 active for-lease listings in Wellesley Island, 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 31 August 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 31 August 2026 · report a data issue
