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    Port Jefferson, NY Office Spaces for Sale

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    Mount Sinai, NY Brookhaven, NY East Setauket, NY Coram, NY Selden, NY Centereach, NY Ronkonkoma, NY Miller Place, NY
    6 properties
    Mixed-Use Retail/Office Building
    Updated: Mar 31
    Mixed-Use Retail/Office Building

    228 East Main Street, Port Jefferson, NY 11777

    $1,649,000
    8,535 sqft
    8,535 SF mixed‑use retail/office building, including the lower level
    Located at 228 East Main Street in Port Jefferson, NY 11777
    Building dates to 1900
    Positioned near Port Jefferson Harbor and Harborfront Park
    Near the Bridgeport/Port Jefferson Ferry
    View details
    Medical Office Building with On-Site MRI
    Updated: Jun 2
    Medical Office Building with On-Site MRI

    5 MEDICAL DR, Port Jefferson Station, NY 11776

    Contact for pricing
    4,000 sqft
    Year built 1978 medical property leased to True North Neurology
    Tenant operates an on‑site MRI machine
    True North Neurology provides neurology, headache medicine, and sleep medicine services
    Lease described as an NNN lease (per public remarks)
    Located within a North Shore medical corridor with three major hospitals within minutes: Stony Brook Medicine, St. Charles Hospital, and Northwell Mather Hospital
    View details
    Net-Leased Medical Office Asset
    Net-Leased Medical Office Asset

    492 Old Town Rd, Port Jefferson Station, NY 11776

    Contact for pricing
    5,000 sqft

    Single-tenant medical office with predictable cash flow and rent growth.

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

    903 Main Street, Port Jefferson, NY 11777

    Contact for pricing

    Private suites combine natural light, hardwood floors, storage, and dedicated mini-split air-conditioning.

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    Built Medical Office Endcap
    Built Medical Office Endcap

    102 Main Street, Port Jefferson Station, NY 11776

    Contact for pricing

    Turnkey medical buildout with multiple exam rooms, lead-lined x-ray room, and large windows for patient-focused use.

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    Renovated Office Building
    Renovated Office Building

    311 Barnum Avenue, Port Jefferson, NY 11777

    Contact for pricing

    Renovated office property with private parking, storage, and a flexible professional layout.

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    Based on your search, we've compiled 42 Potential Opportunities for your consideration. Besides 6 Active listings in Port Jefferson, NY, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 28 Off-Market properties to explore as potential leads, plus 4 Land Listings that present a potential for development.

    Opportunities in Nearby Cities

    Here are 4 Similar properties we found in Nearby Locations for your consideration.

    Office Unit with Private Suites
    Office Unit with Private Suites

    100 S Jersey, Setauket, NY 11733

    $325,000

    Professional office configuration with reception, shared work space, kitchen, private bathroom, and on-site parking.

    View details
    Commercial Development Opportunity on Route 25A
    Commercial Development Opportunity on Route 25A

    12 Myrtle Street, Mount Sinai, NY 11766

    Contact for pricing
    88,000 sqft

    Prime commercial land with development potential near major hospitals.

    View details
    Three-Suite Office Condo
    Three-Suite Office Condo

    100 S Jersey Unit 35, Setauket, NY 11733

    $325,000

    Professional office suite with private rooms, shared workspace, reception, kitchen area, bathroom, and on-site parking.

    View details
    Commercial Development Sites For Sale
    Commercial Development Sites For Sale

    12 Myrtle Street, Mount Sinai, NY 11766

    Contact for pricing
    87,000 sqft 8.54 AC lot

    Two contiguous commercial development sites available for sale.

    View details

    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.

    J-2 Zoned Commercial Land
    J-2 Zoned Commercial Land

    N Country Roads, Rocky Point, NY

    $390,000
    0.41 AC lot

    Commercial land in Rocky Point with J-2 zoning and potential for office, retail, workshop, and automotive-oriented uses.

    View details
    Commercial Land Along Highway
    Commercial Land Along Highway

    1467 Montauk Highway, Mastic, NY 11950

    $950,000
    0.55 AC lot

    Vacant commercial parcel with water available and public sewer.

    View details
    Commercial Land with Build-to-Suit Plan
    Commercial Land with Build-to-Suit Plan

    34-41 Montauk Highway, East Moriches, NY 11940

    $1,289,000
    1.45 AC lot

    Comm-zoned parcel with septic tank service and a proposed two-building commercial development concept.

    View details
    Jamesport Commercial Land Opportunity
    Jamesport Commercial Land Opportunity

    1578 Main Rd, Jamesport, NY 11901

    $1,250,000
    1.36 AC lot

    1.36-acre commercial parcel in Jamesport with development potential.

    View details

    Off-Market Properties in Port Jefferson, NY

    Consider similar Off-Market properties in Port Jefferson, NY. 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.

    518-526 Main St
    OFFICE BUILDING

    518-526 Main St, Port Jefferson, NY 11777

    Estimated value:
    $3,350,000
    4,400 sqft 1.85 AC lot
    View details
    12 Walnut St
    OFFICE BUILDING

    12 Walnut St, Port Jefferson, NY 11777-2164

    Estimated value:
    $735,000
    0.11 AC lot
    View details
    640 Belle Terre Rd
    PROFESSIONAL BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $460,000
    0.15 AC lot
    View details
    640 Belle Terre Rd
    PROFESSIONAL BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $755,000
    0.28 AC lot
    View details
    620 Belle Terre Rd
    PROFESSIONAL BUILDING

    620 Belle Terre Rd, Port Jefferson, NY 11777-2500

    Estimated value:
    $280,000
    0.64 AC lot
    View details
    640 Belle Terre Rd
    PROFESSIONAL BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $250,000
    0.06 AC lot
    View details
    150 Dark Holw Rd
    MEDICAL CLINIC

    150 Dark Holw Rd, Port Jefferson, NY 11777-2048

    Estimated value:
    $180,000
    4.02 AC lot
    View details
    1000 Main St
    PROFESSIONAL BUILDING

    1000 Main St, Port Jefferson, NY 11777-2250

    Estimated value:
    $285,000
    0.25 AC lot
    View details
    1227 Main St
    OFFICE BUILDING

    1227 Main St, Port Jefferson, NY 11777-2227

    Estimated value:
    $285,000
    0.24 AC lot
    View details
    39 Broadway
    OFFICE BUILDING

    39 Broadway, Port Jefferson, NY 11777-1201

    Estimated value:
    $290,000
    0.04 AC lot
    View details
    39 Broadway
    OFFICE BUILDING

    39 Broadway, Port Jefferson, NY 11777-1201

    Estimated value:
    $290,000
    0.04 AC lot
    View details
    39 Broadway
    OFFICE BUILDING

    39 Broadway, Port Jefferson, NY 11777-1201

    Estimated value:
    $290,000
    0.04 AC lot
    View details
    640 Belle Terre Rd
    PROFESSIONAL BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $280,000
    0.22 AC lot
    View details
    640 Belle Terre Rd
    PROFESSIONAL BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $290,000
    0.15 AC lot
    View details
    635 Belle Terre Rd
    PROFESSIONAL BUILDING

    635 Belle Terre Rd, Port Jefferson, NY 11777-1935

    Estimated value:
    $270,000
    3.00 AC lot
    View details
    640 Belle Terre Rd
    OFFICE BUILDING

    640 Belle Terre Rd, Port Jefferson, NY 11777-1936

    Estimated value:
    $290,000
    0.08 AC lot
    View details
    251 Oakland Ave
    PROFESSIONAL BUILDING

    251 Oakland Ave, Port Jefferson, NY 11777-2602

    Estimated value:
    $270,000
    0.98 AC lot
    View details
    70 Country Rd
    PROFESSIONAL BUILDING

    70 Country Rd, Port Jefferson, NY 11777-2161

    Estimated value:
    $265,000
    3.44 AC lot
    View details

    Port Jefferson, NY Office Spaces Market Trends and Statistics

    Explore 34 office spaces for sale in Port Jefferson, NY, showcased through 6 active listings on our real estate platform. These investment opportunities span a total of 17,535 square feet of properties for sale, with an estimated market value of $1,649,000.

    Sale prices for office spaces in Port Jefferson, NY average $1,649,000 — 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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    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Office Units 8
    Office buildings 3
    Medical Office Space 2

    Demographics Overview

    Population 9,347
    Population Growth (5Y) +4.4%
    Median Household Income $148,519

    High-Yield Neighborhoods for Investment

    Identify Port Jefferson submarkets with the highest inventory density on the market and evaluate the average listing prices of real estate assets

    Neighborhood Average Price
    11777 $1.6M

    Listings Trend

    New vs delisted commercial listings in Suffolk County

    New Delisted

    Total CRE Inventory on Market (SF)

    Property Size Breakdown

    The majority of commercial real estate listings in Port Jefferson fall within the 2,500 to 5,000 square foot range.

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