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Middlesex County, CT Office Spaces for Sale

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61 properties
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Mixed-Use Property with Retail and Offices
Updated: Jul 1
Mixed-Use Property with Retail and Offices

189 Middlesex Avenue, Chester, CT 06412

$3,675,000
21,905 sqft 3.02 AC lot
21,905 SF mixed‑use complex at 189–191 Middlesex Avenue in Chester, CT
Fully leased with long‑term tenants across retail, office, and residential space
3.02‑acre lot in a desirable commercial zone (C)
On‑site parking for tenants and visitors
Built in 1986; central air; public water and public sewer
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Historic Office Building with Water Views
Updated: Dec 18, 2025
Historic Office Building with Water Views

31 N Main Street, Essex, CT 06426

$2,195,000
12,600 sqft 0.78 AC lot
Original E.E. Dickinson office building built in 1916
Floor plan includes 11 offices, a copy/mail room, and 2 lavatories on the main level
Upper level features 11 offices and 3 lavatories
Lower level offers 4 private offices, reception, IT room, secure storage, and 2 lavatories
Connecticut River water views from many offices
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Remodeled Medical Office Condo
Remodeled Medical Office Condo

35 Saybrook Road, Essex, CT 06426

$240,000
1,644 sqft

Move-in-ready physicians office condominium in Wildwood Medical Center, completely remodeled.

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Triple Net Medical Office Campus
Triple Net Medical Office Campus

57 S Main St, Middletown, CT 06457

$1,800,000
8,390 sqft

Well-maintained medical office campus across from Middlesex Hospital, offered with triple net leased income and shared parking.

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Mixed-Use Retail and Office Building
Mixed-Use Retail and Office Building

5 Norwich Road, East Haddam, CT 06423

$425,000
3,708 sqft 0.11 AC lot

Renovated first-floor retail space with upper-level character features in a mixed-use commercial building.

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Two-Unit Office Building
Two-Unit Office Building

123 Elm Street, Old Saybrook, CT 06475

$225,000
2,400 sqft

Two well-maintained office units offer first- and second-floor space with new flooring and private restrooms.

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Freestanding Commercial Building
Freestanding Commercial Building

980 New Haven Road, Durham, CT 06422

$1,300,000
2,256 sqft 2.30 AC lot

Freestanding building on Route 17 in Durham, currently under renovation with flexible space and ample on-site parking.

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Profitable Medical/Office Investment Opportunity
Profitable Medical/Office Investment Opportunity

51-57 South Main Street, Middletown, CT 06457

$1,695,000
8,390 sqft 0.52 AC lot

Meticulously maintained medical/office properties with immediate cash flow.

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Heavy Industrial Manufacturing Building
Heavy Industrial Manufacturing Building

18 Airline Road, Durham, CT 06422

$700,000
14,210 sqft 2.20 AC lot

Block and steel industrial building with 14–16-foot ceilings, 1,000 SF office, and 1,600-amp 3-phase power on 2.2 acres.

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Mixed-Use Building with Apartments
Mixed-Use Building with Apartments

33 Deep River Road, Essex, CT 06409

$829,000
7,309 sqft 0.74 AC lot

Historic mixed-use property offering two apartments and multiple office or flex spaces on a 0.74-acre lot.

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Mixed-Use Retail Office Residential Building
Mixed-Use Retail Office Residential Building

189 Middlesex Ave, Chester, CT 06412

$3,675,000
21,905 sqft 3.02 AC lot

Fully leased mixed-use complex combining retail, office, and residential space with ample on-site parking.

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Two-Level Office Suite
Two-Level Office Suite

123 Elm Street, Old Saybrook, CT 06475

$139,000
1,200 sqft

Updated two-level office suite with new flooring, two restrooms, and basement storage plus off-street parking.

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Multi-Office Commercial Office Building
Multi-Office Commercial Office Building

737 Newfield Street, Middletown, CT 06457

$475,000
4,956 sqft 0.28 AC lot

Well-maintained office building with private offices, open workspace, conference rooms, and ample on-site parking.

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Industrial Condo with Office Space
Industrial Condo with Office Space

362 Industrial Park Road Unit 5, Middletown, CT 06457

$650,000
8,545 sqft

8545 SF industrial condo with office and warehouse space.

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Historic Office Building with Fireplaces
Historic Office Building with Fireplaces

130 E Main Street, Clinton, CT 06413

$625,000
3,296 sqft 0.60 AC lot

Multiple office spaces in a 1735 homestead, with wood floors, fireplaces, street-facing rooms, and ample on-site parking.

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Mixed-Use Commercial Property
Mixed-Use Commercial Property

212 Saybrook Road, Haddam, CT 06441

$525,000
8,073 sqft 1.36 AC lot

Mixed-use building with four first-level office units and rental residential components, including decks and appliances.

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Profitable Medical/Office Investment Opportunity
Profitable Medical/Office Investment Opportunity

51 S Main St, Middletown, CT 06457

$1,800,000
8,390 sqft

Meticulously maintained medical/office properties with immediate cash flow.

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Adaptable Commercial Space on Newfield
Adaptable Commercial Space on Newfield

609 Newfield St, Middletown, CT 06457

$599,609
1,500 sqft 1.09 AC lot

Converted office space with high visibility and flexible design.

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Historic Office Building on Route 66
Historic Office Building on Route 66

8 W High St, East Hampton, CT 06424

$685,000
2,300 sqft 1.06 AC lot

Turnkey office building with historic charm and expansion potential.

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Downtown Middletown Office Condominium
Downtown Middletown Office Condominium

575 Main St STE 2, Middletown, CT 06457

$999,999
7,800 sqft

Full-floor office condo in downtown Middletown with modern workspace.

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Mixed-Use Commercial Building
Mixed-Use Commercial Building

423 Main St, Middletown, CT 06457

$4,500,000
39,000 sqft

Commercial building on Main Street featuring renovated improvements and a flexible, multi-tenant layout.

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Mixed-Use Commercial Building
Mixed-Use Commercial Building

423 Main Street, Middletown, CT 06457

$4,500,000
39,000 sqft

Downtown Middletown mixed-use building with renovated historic character and flexible space for owner-users and tenants.

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Turnkey Office Building with Corner Access
Turnkey Office Building with Corner Access

9 W High St, East Hampton, CT 06424

$685,000
2,306 sqft

Turnkey office space with modern updates and historic character, with occupancy relocation planned for business continuity.

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Remodeled Medical Office Condominium
Remodeled Medical Office Condominium

35 Saybrook Road, Essex, CT 06426

$240,000
1,644 sqft

Move-in condition physicians office suite at Wildwood Medical Center with easy access near Route 9 and I-95.

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Middlesex County, CT Office Spaces Market Trends and Statistics

Explore 72 office spaces for sale in Middlesex County, CT, showcased through 61 active listings on our real estate platform. These investment opportunities span a total of 366,485 square feet of properties for sale, with an estimated market value of $50,437,504.

Sale prices for office spaces in Middlesex County, CT start at $109,500, averaging $1,146,306, and reaching up to $4,500,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

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