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    Shirley, NY Moriches, NY Center Moriches, NY
    Versatile Property with Approvals Secured
    Updated: Nov 21, 2025
    Versatile Property with Approvals Secured

    21 Old Montauk Highway, Mastic, NY 11950

    $950,000
    5,086 sqft
    Zoned J‑6 Business: Suitable for diverse uses.
    Valuable approvals secured for medical use from Suffolk County Department of Health and Town of Brookhaven Planning Department.
    Flexible Second Floor: Adaptable as office space or convertible into apartments.
    Prime Location: Excellent visibility and accessibility.
    Move‑In or Develop: Ready for immediate use or customization.
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    Turn Any Listing Into an Investment Snapshot Owner equity, real caprate, demand score for every listing. Go To Analytics Center
    Based on your search, we've compiled 16 Potential Opportunities for your consideration. Besides 1 Active listings in Mastic, NY, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 7 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.

    Commercial Building For Sale
    Commercial Building For Sale

    910 Montauk Highway, Shirley, NY 11967

    $1,800,000
    6,488 sqft · 0.37 AC lot

    6,488 Sq Ft commercial building suitable for various uses.

    View details
    Office/Retail Lot on Route 25
    Office/Retail Lot on Route 25

    Panamoka, NY 11961

    Contact for pricing

    0.67 acre lot with approved plans for office/retail.

    View details
    Medical Office Building For Sale
    Medical Office Building For Sale

    20 Grand Ave, Shirley, NY 11967

    $1,190,000
    6,000 sqft

    Medical office building in Shirley, delivered vacant, ample parking.

    View details
    Commercial Lot on Route 25
    Commercial Lot on Route 25

    Panamoka, NY 11961

    $499,000
    0.67 AC lot

    0.67 acre lot with approved office/retail plans.

    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 on Montauk Highway
    Commercial Land on Montauk Highway

    1467 Montauk Highway, Mastic, NY 11950

    $950,000
    0.55 AC lot

    0.55-acre commercial lot with high visibility on Montauk Highway.

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    Commercial Land in Mastic, NY
    Commercial Land in Mastic, NY

    1287 Montauk Highway, Mastic, NY 11950

    $749,500
    0.31 AC lot

    Commercial land near shopping center and residential neighborhoods.

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    Zoned Commercial Development Lot
    Zoned Commercial Development Lot

    V/L Versa Place, Shirley, NY 11967

    $650,000
    0.50 AC lot

    Vacant J6-zoned site with approved plans to build a two-story retail/office building with elevator.

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    Approved Commercial Development Lot
    Approved Commercial Development Lot

    V/L Versa Place, Shirley, NY 11967

    $650,000
    0.50 AC lot

    Vacant, zoned commercial lot with approvals to build a two-story retail/office building with elevator.

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    Off-Market Properties in Mastic, NY

    Consider similar Off-Market properties in Mastic, 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.

    1425 Montauk Hwy
    PROFESSIONAL BUILDING

    1425 Montauk Hwy, Mastic, NY 11950-2916

    Value Estimation by Request
    0.42 AC lot
    View details
    1235 Montauk Hwy
    OFFICE BUILDING

    1235 Montauk Hwy, Mastic, NY 11950-2917

    Value Estimation by Request
    0.44 AC lot
    View details
    1154 Montauk Hwy
    OFFICE BUILDING

    1154 Montauk Hwy, Mastic, NY 11950-2932

    Value Estimation by Request
    0.23 AC lot
    View details
    1 Lambert Ave
    PROFESSIONAL BUILDING

    1 Lambert Ave, Mastic, NY 11950-2100

    Value Estimation by Request
    0.32 AC lot
    View details
    1360 Montauk Hwy
    OFFICE BUILDING

    1360 Montauk Hwy, Mastic, NY 11950-2929

    Value Estimation by Request
    0.30 AC lot
    View details
    Montauk Hwy
    OFFICE BUILDING

    Montauk Hwy, Mastic, NY 11950

    Value Estimation by Request
    0.93 AC lot
    View details
    Row Rd
    OFFICE BUILDING

    Row Rd, Mastic, NY 11950

    $530,000
    Estimated value
    249.95 AC lot
    View details

    Mastic, NY Office Spaces Market Trends and Statistics

    Explore 8 office spaces for sale in Mastic, NY on our real estate platform. These investment opportunities span a total of 5,086 square feet of properties for sale, with an estimated market value of $950,000.

    Sale prices for office spaces in Mastic, NY start at $950,000, averaging $950,000, and reaching up to $950,000 — 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 7
    Office buildings 1

    Demographics Overview

    Population 17K
    Population Growth (5Y) +6.7%
    Median Household Income $105,593
    College Educated 21.9%

    High-Yield Neighborhoods for Investment

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

    Neighborhood Average Price
    11950 $950K

    Listings Trend

    New vs delisted commercial listings in Suffolk County

    New Delisted

    Total CRE Inventory on Market (SF)

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