Advertise
    East Islip, NY
    Building

    East Islip, NY Office Buildings for Sale

    Notify Me
    List
    Map
    Islip Terrace, NY Islip, NY Bayshore, NY Brentwood, NY Oakdale, NY Central Islip, NY Brightwaters, NY West Sayville, NY
    Renovated Multi-Tenant Office Building
    Updated: Feb 16
    Renovated Multi-Tenant Office Building

    128 Carleton Avenue, East Islip, NY 11730

    $800,000
    0.28 AC lot
    7 private offices plus a spacious conference room
    2 renovated bathrooms and a modern kitchenette
    Detached garage for storage or expanded use
    Complete renovation in 2020, including HVAC and common areas
    100% occupied office building
    View details
    Office Building with Expansion Potential
    Updated: Oct 24, 2025
    Office Building with Expansion Potential

    55 Carleton Avenue, East Islip, NY 11730

    $1,650,000
    0.98 AC lot
    0.98‑acre GSD‑zoned office property at 55 Carleton Avenue
    Expansion potential of up to 11,000 sq. ft.
    Redevelopment potential for a new building of up to 17,000 sq. ft.
    Approximately 2 miles from the Federal Court House and 2.5 miles from Northwell South Shore University Hospital
    Access from Sunrise Hwy and Southern State Parkway
    View details
    Turn a Listing Into an Investment Snapshot Cap Rate, Potential NOI, Demand score for every listing. Go To Analytics Center
    Based on your search, we've compiled 49 Potential Opportunities for your consideration. Besides 2 Active listings in East Islip, NY, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 40 Off-Market properties to explore as potential leads, plus 3 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.

    Free-Standing Flex Office Building
    Free-Standing Flex Office Building

    554 Hauppauge Rd, Smithtown, NY 11787

    $1,299,000
    0.30 AC lot

    Free-standing flex/office building on a 13,000+ sq. ft. lot with 3 bays, high ceilings, office space, and 32 parking spaces.

    View details
    Fenced Industrial Property
    Fenced Industrial Property

    201 Union Boulevard, West Islip, NY 11795

    $4,200,000
    1.20 AC lot

    IND1-zoned industrial property with a standalone office and permitted fuel storage.

    View details
    Character Office Building with Basement
    Character Office Building with Basement

    20 Manor Road, Smithtown, NY 11787

    $858,000

    Two-level layout includes private offices, conference space, and on-site parking.

    View details
    Renovated Office Building
    Renovated Office Building

    800 Montauk Highway, West Islip, NY 11795

    $1,500,000
    0.24 AC lot

    Medical-zoned office property with updated main-level space, a finished basement, and a reception area featuring a fireplace.

    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.

    Commercial Land Across From Apartments
    Commercial Land Across From Apartments

    770 N Broadway, Amityville, NY 11701

    $1,999,990
    0.95 AC lot

    E Business zoning with public water and public sewer serves the commercial parcel.

    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
    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

    Off-Market Properties in East Islip, NY

    Consider similar Off-Market properties in East Islip, 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.

    1 Jackson St
    OFFICE BUILDING

    1 Jackson St, East Islip, NY 11730

    Estimated value:
    $1,150,000
    0.34 AC lot
    View details
    369 Main St
    OFFICE BUILDING

    369 Main St, East Islip, NY 11730-2800

    Estimated value:
    $475,000
    0.04 AC lot
    View details
    369 Main St
    OFFICE BUILDING

    369 Main St, East Islip, NY 11730-2800

    Estimated value:
    $280,000
    0.03 AC lot
    View details
    369 Main St
    OFFICE BUILDING

    369 Main St, East Islip, NY 11730-2800

    Estimated value:
    $490,000
    0.02 AC lot
    View details
    79-83 Main St
    PROFESSIONAL BUILDING

    79-83 Main St, East Islip, NY 11730

    Estimated value:
    $335,000
    0.37 AC lot
    View details
    88 Main St
    OFFICE BUILDING

    88 Main St, East Islip, NY 11730-2528

    Estimated value:
    $745,000
    0.23 AC lot
    View details
    96 Main St
    OFFICE BUILDING

    96 Main St, East Islip, NY 11730-2531

    Estimated value:
    $260,000
    0.45 AC lot
    View details
    Main St
    OFFICE BUILDING

    Main St, East Islip, NY 11730

    Estimated value:
    $290,000
    0.16 AC lot
    View details
    45 Main St
    PROFESSIONAL BUILDING

    45 Main St, East Islip, NY 11730-2502

    Estimated value:
    $225,000
    0.74 AC lot
    View details
    268 Main St
    PROFESSIONAL BUILDING

    268 Main St, East Islip, NY 11730-2835

    Estimated value:
    $235,000
    0.26 AC lot
    View details
    149 Main St
    OFFICE BUILDING

    149 Main St, East Islip, NY 11730-2644

    Estimated value:
    $255,000
    0.25 AC lot
    View details
    167 Main St
    PROFESSIONAL BUILDING

    167 Main St, East Islip, NY 11730-2602

    Estimated value:
    $235,000
    0.23 AC lot
    View details
    200 Carleton Ave
    OFFICE BUILDING

    200 Carleton Ave, East Islip, NY 11730-1222

    Estimated value:
    $235,000
    1.55 AC lot
    View details
    228 Main St
    PROFESSIONAL BUILDING

    228 Main St, East Islip, NY 11730-2711

    Estimated value:
    $235,000
    0.35 AC lot
    View details
    216 Carleton Ave
    PROFESSIONAL BUILDING

    216 Carleton Ave, East Islip, NY 11730-1222

    Estimated value:
    $230,000
    0.43 AC lot
    View details
    8 Laurel Ave
    PROFESSIONAL BUILDING

    8 Laurel Ave, East Islip, NY 11730-2131

    Estimated value:
    $210,000
    0.76 AC lot
    View details
    107 Main St
    PROFESSIONAL BUILDING

    107 Main St, East Islip, NY 11730-2337

    Estimated value:
    $245,000
    0.32 AC lot
    View details
    74 Carleton Ave
    PROFESSIONAL BUILDING

    74 Carleton Ave, East Islip, NY 11730-2109

    Estimated value:
    $235,000
    0.18 AC lot
    View details
    3045 Sunrise Hwy
    OFFICE BUILDING

    3045 Sunrise Hwy, East Islip, NY 11730

    Estimated value:
    $255,000
    1.14 AC lot
    View details
    137 Main St
    PROFESSIONAL BUILDING

    137 Main St, East Islip, NY 11730-2601

    Estimated value:
    $235,000
    0.33 AC lot
    View details
    8 Greenwood Ave
    PROFESSIONAL BUILDING

    8 Greenwood Ave, East Islip, NY 11730-2138

    Estimated value:
    $245,000
    0.09 AC lot
    View details
    369 Main St
    OFFICE BUILDING

    369 Main St, East Islip, NY 11730-2800

    Estimated value:
    $270,000
    0.04 AC lot
    View details

    East Islip, NY Office Buildings Market Trends and Statistics

    Explore 42 office buildings for sale in East Islip, NY on our real estate platform.

    Sale prices for office properties in East Islip, NY start at $800,000, averaging $1,225,000, and reaching up to $1,650,000 — offering options for a variety of budgets and business needs. Daily updated analytics ensure you stay ahead with the latest data and market trends.

    List
    Map

    Top Commercial Asset Segments

    Commercial property segments ranked by active listings on the market

    Medical Office Space 3
    Office buildings 2
    Office Units 1

    Demographics Overview

    Population 14K
    Population Growth (5Y) +3.7%
    Median Household Income $146,190
    College Educated 56.6%

    High-Yield Neighborhoods for Investment

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

    Neighborhood Average Price
    11730 $1.2M

    Listings Trend

    New vs delisted commercial listings in Suffolk County

    New Delisted

    Total CRE Inventory on Market (SF)

    Need Help?

    Reach out if you need assistance with Realmo tools or have questions about your listings

    Contact Us

    Browse Office buildings for Sale Near East Islip, NY

    Popular Searches in East Islip, NY

    Most Searched ZIP Codes in East Islip, NY

    • 11730
    Why this one?
    Saved
    Reason not saved — we won't ask again

    Select Neighborhood

    Google sign-in failed. Please try again or use another login method.
    Sign Up Successful!
    You now have access to more from Realmo!