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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

    $3,100,000
    9,760 sqft 1.83 AC lot

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

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    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    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

    $4,500,000
    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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    Professional Office Building
    Professional Office Building

    344 North Main Street, Marlborough, CT 06447

    Contact for pricing
    8,000 sqft

    Well-maintained 8,000-square-foot office building with ample on-site parking and flexible floor plan options.

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    Commercial Office Building For Sale
    Commercial Office Building For Sale

    737 Newfield Street, Middletown, CT 06457

    $475,000
    4,956 sqft

    Well-maintained office building in a visible, accessible Middletown location.

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    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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    Professional Office Building For Sale
    Professional Office Building For Sale

    344 N Main St, Marlborough, CT 06447

    Contact for pricing
    7,874 sqft 0.92 AC lot

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

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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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    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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    Office Property with Auxiliary Building
    Office Property with Auxiliary Building

    250 Middlesex Turnpike, Old Saybrook, CT 06475

    Contact for pricing

    Two-building property near I-95 includes a home rebuilt in 1992 and an additional structure.

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    Based on your search, we've compiled 56 Potential Opportunities for your consideration. Besides 14 Active listings in Middlesex County, CT, we suggest exploring several alternatives: similar 40 Off-Market properties to explore as potential leads, plus 2 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.

    Industrial Land with Extensive Frontage
    Industrial Land with Extensive Frontage

    267 Waterford Parkway N, Waterford, CT 06385

    $1,250,000
    68.00 AC lot

    I-G-zoned land with public water and sewer available for industrial and commercial uses.

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    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.

    View details

    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

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

    1572 Saybrook Rd, Haddam, CT 06438-1318

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

    98 Brg Rd, Haddam, CT 06438-1357

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

    1565 Saybrook Rd, Haddam, CT 06438-1321

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

    86 Main St, Chester, CT 06412-1340

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

    1588 Saybrook Rd, Haddam, CT 06438-1318

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

    553 Portland Cobalt Rd, Portland, CT 06480-1981

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

    6 Main St, Chester, CT 06412-1390

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

    91 Main St, Chester, CT 06412-1311

    $440,000
    Estimated value
    3,446 sqft 0.55 AC lot
    View details
    595 Main St
    OFFICE BUILDING

    595 Main St, Portland, CT 06480-1156

    $350,000
    Estimated value
    18,392 sqft 1.64 AC lot
    View details

    Middlesex County, CT Office Buildings Market Trends and Statistics

    Explore 54 office buildings for sale in Middlesex County, CT, showcased through 14 active listings on our real estate platform. These investment opportunities span a total of 146,190 square feet of properties for sale, with an estimated market value of $17,700,000.

    Sale prices for office properties in Middlesex County, CT start at $475,000, averaging $1,966,666, 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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    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.

    RE/MAX VALLEY SHORE
    103 Main Street Fenwick, CT 06475
    Phone: 18603881228

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