Commercial Real Estate Market in Castine, ME
Updated monthly: sale, lease, property records, location trend, and more… · Last update: August 31
9 active listings and 20 off-market properties in Castine, ME.
Market Trends
Castine, ME spans 7.8 square miles in Hancock County, Maine. Figures below refresh monthly; last updated 31 August 2026.
Office
Office space in Castine, ME asks $125/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 Castine, ME asks $143/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 Castine, 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 Castine, ME asks $200/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
Zoning & Land Use
Land Use Mix share of zoned land by category
- Residential 32.4%
- Civic 4.1%
- Commercial 2.6%
Largest Zones share of zoned land by district
Water
Rural District
Village District 3
Village District 2
Village District 1
Rural District (R)
The intent of this zone is to promote low-density residential living, agriculture, and resource-based uses while preserving rural character and open space
Market overview
Demographics & Economy
Castine, ME has 1,320 residents in 694 households. Density runs 170 people per square mile. Median household income here is $111,500 and median gross rent $1,028 a month.
1,320
Population
694
Households
1.9
Avg Household Size
27
Median Age
76%
College-Educated
100%
High-School Grad
7.8 sq mi
ZIP Area
170
Density / Sq Mi
$111,500
Median Household Income
$9,794
Median Earnings
$1,028
Median Rent
$557,700
Median Home Value
Tools
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Brooksville | — | — |
| Penobscot | — | — |
| Stockton Springs | — | — |
| Searsport | — | — |
Commercial property in Castine, ME asks $81/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Castine?
Commercial property in Castine, ME asks an average of $81 per square foot. Multifamily carries the highest asking price at $200/SF.
Where does Realmo's Castine market data come from?
Realmo compiles Castine, ME figures from 9 active sale listings, 20 tracked off-market properties, the current Castine zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 31 August 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 9 active for-sale and 0 active for-lease listings in Castine, ME. 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: 12,808 zoned acres across 7 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 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
