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    Middlesex County, CT Office Buildings for Sale

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    Historic Multi-Level Office Building
    Updated: Dec 18, 2025
    Historic Multi-Level Office Building

    31 N Main Street, Essex, CT 06426

    $2,195,000
    12,600 sqft 0.78 AC lot
    12,600 square feet across three levels
    26 offices plus reception, IT, copy/mail, and secure storage areas
    Built in 1916 with original architectural details remaining
    0.78‑acre office property at 31 N Main Street, Essex, CT 06426
    Connecticut River water views from many offices
    View details
    Historic Multi-Suite Office Building
    Updated: Aug 1, 2023
    Historic Multi-Suite Office Building

    130 E Main Street, Clinton, CT 06413

    $625,000
    3,296 sqft 0.60 AC lot
    3,296 square feet in a building constructed in 1735
    .6‑acre parcel with maintained landscaping and a parking lot
    Two large street‑facing rooms plus additional rear and upper‑level office areas
    Wide‑plank wood flooring and multiple fireplaces
    Located on Route 1 near shopping, banking, restaurants, and town services
    View details
    Medical Office Building
    Medical Office Building

    147 Westbrook Rd, Essex, CT 06426

    $3,000,000
    9,760 sqft 1.83 AC lot

    Multi-tenant professional property with healthcare, financial services, and second-floor office occupancy.

    View details
    Realmo Analytics Monitor Off-market properties and contact owners who are ready to sell. Many signals applied to make quality leads for you. Get Leads
    Mixed-Use Retail Office Residential Building
    Mixed-Use Retail Office Residential Building

    189 Middlesex Ave, Chester, CT 06412

    $3,300,000
    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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    Historic Office Building in Essex
    Historic Office Building in Essex

    31 North Main St, Essex, CT 06426

    $2,195,000
    12,600 sqft

    Original 1916 E.E. Dickinson office building with water views.

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    Mixed-Use Commercial Building
    Mixed-Use Commercial Building

    423 Main St, Middletown, CT 06457

    $3,990,000
    39,000 sqft

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

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    East Hampton Office Building on Route 66
    East Hampton Office Building on Route 66

    8 West High Street, East Hampton, CT 06424

    $685,000
    2,306 sqft 1.06 AC lot

    Turnkey 2,300 SF office building on 1.06 acres.

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    Flex Building with Loading Dock
    Flex Building with Loading Dock

    700 Corporate Row, Cromwell, CT 06416

    Contact for pricing
    6,250 sqft 1.04 AC lot

    Office and flex areas are supported by dock and drive-in loading, central air conditioning, and forced hot air heat.

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    Office Building with Live-Work Space
    Office Building with Live-Work Space

    27 Pleasant Street, Middletown, CT 06457

    $679,900
    3,314 sqft

    MXC-zoned property includes an upper-level kitchen, two bedrooms, and a full bath.

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    Professional Office Building For Sale
    Professional Office Building For Sale

    344 N Main St, Marlborough, CT 06447

    Contact for pricing
    8,000 sqft 0.92 AC lot

    Two-story office building with 7,874 SF on 0.92 acres.

    View details
    Turnkey Office Building with Corner Access
    Turnkey Office Building with Corner Access

    9 W High St, East Hampton, CT 06424

    Contact for pricing
    2,306 sqft

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

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    Historic Homestead Office Spaces Available
    Historic Homestead Office Spaces Available

    130 E Main St, Clinton, CT 06413

    $625,000
    0.60 AC lot

    Versatile commercial property with historic charm and convenient location.

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    Single-Tenant Office Building
    Single-Tenant Office Building

    150 Marlborough, Portland, CT 06480

    $495,000

    The property is occupied and includes an irrigation system.

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    Middletown Office Building with Kitchen
    Middletown Office Building with Kitchen

    33 Pleasant St, Middletown, CT

    Contact for pricing
    21,587 sqft 0.49 AC lot

    21,587 SF office building with commercial kitchen for sale.

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    Two-Story Professional Office Building
    Two-Story Professional Office Building

    344 N Main St, Marlborough, CT 06447

    Contact for pricing
    7,874 sqft 0.92 AC lot

    Two-story office building with updated roof, HVAC, and siding plus 40 parking spaces.

    View details
    Based on your search, we've compiled 56 Potential Opportunities for your consideration. Besides 15 Active listings in Middlesex County, CT, we suggest exploring several alternatives: similar 40 Off-Market properties to explore as potential leads, plus 1 Land Listings that present a potential for development.

    Potential Development Sites for Consideration

    Can't find the perfect fit? These Land listings present an alternative path: the potential to develop a property for your specific goals.

    Important: These AI-suggestions are a starting point, not a guarantee of permitted use. All zoning, permitting, and land use information must be independently verified by you with the appropriate local authorities before making any commitments.

    Norwich Industrial Park Land Parcels
    Norwich Industrial Park Land Parcels

    60-70 Connecticut Ave, Norwich, CT 06360

    $2,990,000
    17.16 AC lot

    17.16+ acres in Norwich Industrial Park for sale.

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    Off-Market Properties in Middlesex County, CT

    Consider similar Off-Market properties in Middlesex County, CT. You may contact the owners directly to inquire about their potential intentions to sell. To help you make a strong first impression, we can assist by reaching out to these owners with compelling proposals created using our AI tool.

    235 Rte 80
    OFFICE BUILDING

    235 Rte 80, Killingworth, CT 06419-1468

    Estimated value:
    $120,000
    1,264 sqft 1.00 AC lot
    View details
    1572 Saybrook Rd
    OFFICE BUILDING

    1572 Saybrook Rd, Haddam, CT 06438-1318

    Estimated value:
    $300,000
    3,036 sqft 1.13 AC lot
    View details
    98 Brg Rd
    OFFICE BUILDING

    98 Brg Rd, Haddam, CT 06438-1357

    Estimated value:
    $365,000
    1,784 sqft 0.46 AC lot
    View details
    1565 Saybrook Rd
    OFFICE BUILDING

    1565 Saybrook Rd, Haddam, CT 06438-1321

    Estimated value:
    $295,000
    3,378 sqft 0.56 AC lot
    View details
    86 Main St
    OFFICE BUILDING

    86 Main St, Chester, CT 06412-1340

    Estimated value:
    $1,005,000
    5,799 sqft 1.15 AC lot
    View details
    1588 Saybrook Rd
    OFFICE BUILDING

    1588 Saybrook Rd, Haddam, CT 06438-1318

    Estimated value:
    $305,000
    2,737 sqft 1.00 AC lot
    View details
    553 Portland Cobalt Rd
    OFFICE BUILDING

    553 Portland Cobalt Rd, Portland, CT 06480-1981

    Estimated value:
    $535,000
    5,165 sqft 1.74 AC lot
    View details
    6 Main St
    OFFICE BUILDING

    6 Main St, Chester, CT 06412-1390

    Estimated value:
    $1,355,000
    4,935 sqft 0.27 AC lot
    View details
    91 Main St
    OFFICE BUILDING

    91 Main St, Chester, CT 06412-1311

    Estimated value:
    $440,000
    3,446 sqft 0.55 AC lot
    View details

    Middlesex County, CT Office Buildings Market Trends and Statistics

    Explore 55 office buildings for sale in Middlesex County, CT, showcased through 15 active listings on our real estate platform. These investment opportunities span a total of 150,798 square feet of properties for sale, with an estimated market value of $17,789,900.

    Sale prices for commercial office buildings in Middlesex County, CT start at $495,000, averaging $1,778,990, and reaching up to $3,990,000 — 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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    Featured Middlesex County Real Estate Agencies

    Realmo connects you with licensed Middlesex County CRE brokers providing property specifications, local market pricing, and commercial transaction underwriting support.

    Cavanaugh & Company, LLC
    98 Washington Street Middletown, CT 06457
    Phone: (860) 346-8900
    www.cavanaughandcompany.com
    RE/MAX VALLEY SHORE
    103 Main Street Fenwick, CT 06475
    Phone: (860) 388-1228
    Silva-Williams, Inc. dba Sterling, Realtors
    27 Pleasant Street Middletown, CT 06457
    Phone: (860) 343-3820
    www.sterling-realtors.com
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