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    Northampton, NY Office Buildings for Sale

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    Renovated Office Complex on Route 25
    $2,200,000
    7,000 SF

    Renovated Office Complex on Route 25

    189 Rte 25/Main Rd, Riverhead, NY 11901

    Two renovated office buildings totaling 7,000 SF on 2.52 acres.

    • Fully renovated office complex: approximately 7000 sq ft across two buildings.
    • Prime location on NYS Route 25/Main Road, east of County Rte 105, gateway to North and South Forks.
    • RLC zoning allows for a wide range of uses, ideal for professional or satellite offices.
    • Features 7 bathrooms, central air, gas heat/hot water, town water, and private septic on 2.52 acres with expansion potential.
    • Abundant customer and employee parking.
    Updated: Oct 29, 2025
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    Affordable Office Building on Main
    $698,000
    2,000 SF

    Affordable Office Building on Main

    230 W Main Rd, Riverhead, NY 11901

    Two-story office building near transit-oriented development and local amenities.

    • Most affordable commercial building on Main St. Riverhead.
    • Versatile zoning permits office, retail, restaurants, and more.
    • Generate potential income by using part of the building and renting out the rest.
    • Close proximity to courts, restaurants, train, bus, riverfront parks, museums, and aquarium.
    • Contiguous lot available for sale to double yield.
    Updated: Oct 21, 2025
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    Riverhead Commercial Building Near Courts
    $898,000
    3,000 SF

    Riverhead Commercial Building Near Courts

    3,000 sq ft commercial building near courts in Riverhead, NY.

    145 Griffing Ave, Riverhead, NY 11901
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    Based on your search, we've compiled 94 Potential Opportunities for your consideration. Besides 3 Active listings in Northampton, NY, we suggest exploring several alternatives: 4 properties in Nearby Cities, and similar 84 Off-Market properties to explore as potential leads, plus 3 Land Listings that present a potential for development.

    Explore Opportunities in Nearby Cities

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

    Luxury Ridge Office Building
    $11,250,000
    45,000 SF

    Luxury Ridge Office Building

    Prime HQ location, 45,000 SF, award-winning design.

    1 Research Road, Ridge, NY 11961
    View details
    Professional Office Building on Route 25
    $1,200,000
    3,486 SF

    Professional Office Building on Route 25

    3,486 SF office building with owner-user suite and lease-up upside.

    1814 Middle Country Rd, Ridge, NY 11961
    View details
    Southampton Commercial Building with Highway Exposure
    $2,750,000
    6,000 SF

    Southampton Commercial Building with Highway Exposure

    6,000 SF professional office building in Southampton, NY for sale.

    2036 County Road 39, Southampton, NY 11968
    View details
    Southampton Village Office Building For Sale
    $3,200,000
    4,020 SF

    Southampton Village Office Building For Sale

    Located in the heart of Southampton Village Business District.

    51 Hill St, Southampton, NY 11968
    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 in High Traffic Area
    $775,000
    1.00 Acre

    Commercial Land in High Traffic Area

    Commercial land for sale or land lease in Riverhead, NY.

    25/58 Main Rd Rte, Riverhead, NY 11901
    View details
    Commercial Lot in Riverhead, NY
    $448,000
    0.16 Acres

    Commercial Lot in Riverhead, NY

    Vacant commercial lot suitable for various businesses and development.

    230 B W Main, Riverhead, NY 11901
    View details
    Riverhead Commercial Land For Sale
    $775,000

    Riverhead Commercial Land For Sale

    Commercial property for sale or land lease in Riverhead, NY.

    25/58 Main Rd Rte, Riverhead, NY 11901
    View details

    Explore Off-Market Properties in Northampton, NY

    Consider similar Off-Market properties in Northampton, 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.

    100 Ctr Dr

    100 Ctr Dr

    OFFICE BUILDING • 223,108 SF
    Value Estimation by Request
    100 Ctr Dr, Riverhead, NY 11901-3307
    View details
    110 Frg Rd

    110 Frg Rd

    OFFICE BUILDING • 126,936 SF
    Value Estimation
    $37,980,000
    110 Frg Rd, Riverhead, NY 11901
    View details
    700 Main Rd

    700 Main Rd

    OFFICE BUILDING • 1,144 SF
    Value Estimation by Request
    700 Main Rd, Riverhead, NY 11901-5705
    View details
    1186 Main St

    1186 Main St

    OFFICE BUILDING • 2,640 SF
    Value Estimation
    $570,000
    1186 Main St, Riverhead, NY 11901
    View details
    400 Ostrander Ave

    400 Ostrander Ave

    OFFICE BUILDING • 5,765 SF
    Value Estimation
    $1,110,000
    400 Ostrander Ave, Riverhead, NY 11901-4614
    View details
    20 Riverleigh Ave

    20 Riverleigh Ave

    OFFICE BUILDING • 4,410 SF
    Value Estimation
    $790,000
    20 Riverleigh Ave, Riverhead, NY 11901-3674
    View details
    632 Roanoke Ave

    632 Roanoke Ave

    PROFESSIONAL BUILDING • 2,271 SF
    Value Estimation by Request
    632 Roanoke Ave, Riverhead, NY 11901-2728
    View details
    23 2nd St

    23 2nd St

    OFFICE BUILDING • 6,242 SF
    Value Estimation
    $1,125,000
    23 2nd St, Riverhead, NY 11901
    View details
    155 Flanders Rd

    155 Flanders Rd

    OFFICE BUILDING • 818 SF
    Value Estimation by Request
    155 Flanders Rd, Riverhead, NY 11901-3715
    View details
    177 Old Country Rd

    177 Old Country Rd

    OFFICE BUILDING • 2,300 SF
    Value Estimation
    $840,000
    177 Old Country Rd, Riverhead, NY 11901-2119
    View details
    254 Old Country Rd

    254 Old Country Rd

    OFFICE BUILDING • 1,365 SF
    Value Estimation by Request
    254 Old Country Rd, Riverhead, NY 11901-2198
    View details
    631 Old Country Rd, Unit 639

    631 Old Country Rd, Unit 639

    PROFESSIONAL BUILDING • 5,625 SF
    Value Estimation
    $1,405,000
    631 Old Country Rd, Riverhead, NY 11901-2103
    View details
    1295 Pulaski St

    1295 Pulaski St

    OFFICE BUILDING • 8,940 SF
    Value Estimation
    $2,495,000
    1295 Pulaski St, Riverhead, NY 11901-4821
    View details
    246 Main St

    246 Main St

    PROFESSIONAL BUILDING • 2,812 SF
    Value Estimation
    $725,000
    246 Main St, Riverhead, NY 11901-2841
    View details
    33 2nd St

    33 2nd St

    PROFESSIONAL BUILDING • 10,229 SF
    Value Estimation
    $3,025,000
    33 2nd St, Riverhead, NY 11901-2701
    View details
    1190 Old Country Rd

    1190 Old Country Rd

    PROFESSIONAL BUILDING • 3,446 SF
    Value Estimation
    $900,000
    1190 Old Country Rd, Riverhead, NY 11901-4450
    View details
    712 Roanoke Ave

    712 Roanoke Ave

    PROFESSIONAL BUILDING • 1,890 SF
    Value Estimation by Request
    712 Roanoke Ave, Riverhead, NY 11901-2730
    View details
    940 Roanoke Ave

    940 Roanoke Ave

    PROFESSIONAL BUILDING • 5,936 SF
    Value Estimation
    $1,000,000
    940 Roanoke Ave, Riverhead, NY 11901-2749
    View details
    818 Main St

    818 Main St

    PROFESSIONAL BUILDING • 1,920 SF
    Value Estimation by Request
    818 Main St, Riverhead, NY 11901-2563
    View details
    214 Griffing Ave

    214 Griffing Ave

    OFFICE BUILDING • 2,510 SF
    Value Estimation
    $680,000
    214 Griffing Ave, Riverhead, NY 11901-3009
    View details
    46 2nd St

    46 2nd St

    OFFICE BUILDING • 8,894 SF
    Value Estimation by Request
    46 2nd St, Riverhead, NY 11901
    View details

    Northampton, NY Office Buildings Investment Opportunities Market Analysis

    Explore 87 office buildings for sale in Northampton, NY, showcased through 3 active listings on our real estate platform. These investment opportunities span a total of 2,536,067 square feet of properties for sale, with an estimated market value of $57,711,000.

    Sale prices for office properties in Northampton, NY start at $110,000, averaging $1,227,893, and reaching up to $21,610,000 — 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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