Commercial Real Estate Market in Marlborough, CT
Updated monthly: sale, lease, property records, location trend, and more… · Last update: September 30
56 active listings and 331 off-market properties in Marlborough, CT. Commercial property asks $552/SF to buy and $18.40/SF/Yr to lease.
Market Trends
Marlborough, CT spans 23.4 square miles in Middlesex County, Connecticut. Figures below refresh monthly; last updated 30 September 2026.
Office
Office vacancy in Marlborough, CT runs 19.9% across the Northeast region in 2025, up from 13.1% in 2019.
Vacancy Rate % in Northeast region
Retail
Retail vacancy in Marlborough, CT 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 Marlborough, CT 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 Marlborough, CT 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
- Residential 96.6%
- Industrial 1.6%
- Commercial 1.4%
- Civic 0.4%
Largest Zones share of zoned land by district
Residential
Open Space
Designed Business And Industrial
Village Center District Residential
Designed Multiple Residence
Marlborough, CT zones 15,011 acres across 12 districts. Commercial zoning covers 1.4% of zoned land, residential 96.6% and industrial 1.6%. The largest single district is Residential at 69.8%. For commercial buyers the practical constraint is that only 3% of land carries a commercial or industrial designation.
Residential (R)
R Residential Zone DMR Designed Multiple Residence GC General Commercial Zone VCD Village Center District DBIZ Designed Business/Industrial Zone GI General Industrial Zone DI Designed Industrial Zone DR Designed Recreation Zone DC Designed Commercial Zone
Market overview
Demographics & Economy
Marlborough, CT has 6,133 residents in 2,208 households. Density runs 263 people per square mile. Median household income here is $140,022 and median gross rent $1,282 a month.
6,133
Population
2,208
Households
2.8
Avg Household Size
46
Median Age
49%
College-Educated
97%
High-School Grad
23.4 sq mi
ZIP Area
263
Density / Sq Mi
$140,022
Median Household Income
$73,250
Median Earnings
$1,282
Median Rent
$373,000
Median Home Value
Tools
Lease vs Buy Breakeven
At $18.40/SF/Yr lease vs $552/SF buy → buying wins if held > 30 years.
At a 3.3% gross asking yield the payback reads short relative to leasing. Assumes 30% down at 6.5% fixed, 2% a year in taxes and upkeep, 3% appreciation, 5% opportunity cost, 2% closing plus 5% selling costs, and a 3% annual rent escalator.
Nearby Markets
| Market | Average Sale Price, $/SF | Average Lease Price, $/SF/Yr |
|---|---|---|
| Hebron | — | $14.40 |
| East Hampton | — | $18.40 |
| Glastonbury | — | $25.04 |
| Colchester | — | $8.72 |
Commercial property in Marlborough, CT asks $552/SF.
Frequently Asked Questions
What is the average price per square foot for commercial property in Marlborough?
Commercial property in Marlborough, CT asks an average of $552 per square foot. The 3 most recent recorded sales traded at a median of $126/SF, so asking sits 337% above the achieved median.
How much does it cost to lease commercial space in Marlborough?
Asking lease rates in Marlborough, CT average $18.40 per square foot per year.
Is it cheaper to lease or buy commercial space in Marlborough?
Buying beats leasing in Marlborough, CT if the property is held longer than 30.0 years, comparing $18.40/SF/Yr asking rent with $552/SF asking price. The model assumes 30% down at 6.5% fixed, 2% of value per year in taxes and upkeep, 3% appreciation, 5% opportunity cost on the cash and a 3% annual rent escalator.
What zoning applies to commercial property in Marlborough?
Marlborough, CT zones 15,011 acres across 12 districts, of which 1.4% is commercial and 1.6% industrial. The largest single district is Residential at 69.8% of zoned land. R Residential Zone DMR Designed Multiple Residence GC General Commercial Zone VCD Village Center District DBIZ Designed Business/Industrial Zone GI General Industrial Zone DI Designed Industrial Zone DR Designed Recreation Zone DC Designed Commercial Zone Residential zoning covers 96.6% and open space 0%.
Where does Realmo's Marlborough market data come from?
Realmo compiles Marlborough, CT figures from 5 recent recorded sales, 32 active sale listings, 24 active lease listings, 331 tracked off-market properties, the current Marlborough zoning release. Sale and lease figures refresh monthly; vacancy annually. Last updated 30 September 2026.
Methodology & data sources
- Asking prices and averages
- Computed from 32 active for-sale and 24 active for-lease listings in Marlborough, CT. 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: 15,011 zoned acres across 12 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, industrial vacancy is reported at Northeast region level and asking prices run materially above recent closed pricing.
- 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 · How Realmo checks market page data · Report a data issue
