Commercial Real Estate Market in Long Island, ME
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
Market Trends
Long Island, ME spans 1.4 square miles in Cumberland County, Maine. Figures below refresh monthly; last updated 31 August 2026.
Office
Office space in Long Island, ME asks $235/SF to buy. Vacancy runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Average Sale Price $/SF
Listings
Vacancy Rate % in Northeast region
Retail
Retail space in Long Island, ME asks $252/SF to buy. Vacancy runs 6% across the Northeast region in 2025, little changed from 6% in 2019. Down from a 2020 peak of 7.1%.
Average Sale Price $/SF
Listings
Vacancy Rate % in Northeast region
Industrial
Industrial vacancy in Long Island, ME 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 Long Island, ME asks $266/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
Long Island, ME has 234 residents in 433 households. Density runs 163 people per square mile. Median household income here is $80,625 and median gross rent $2,167 a month.
234
Population
433
Households
0.5
Avg Household Size
58
Median Age
54%
College-Educated
97%
High-School Grad
1.4 sq mi
ZIP Area
163
Density / Sq Mi
$80,625
Median Household Income
$43,333
Median Earnings
$2,167
Median Rent
$461,700
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Portland | — | $17.92 |
| South Portland | — | $18.95 |
| Falmouth | — | — |
| Chebeague Island | — | — |
Methodology & data sources
- 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
