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    Riverhead, 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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    Riverhead Office Building Investment Opportunity
    $7,850,000
    26,235 SF

    Riverhead Office Building Investment Opportunity

    26,235 SF office building with long-term NNN tenant.

    33 W 2Nd St, Riverhead, NY 11901
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    Based on your search, we've compiled 95 Potential Opportunities for your consideration. Besides 4 Active listings in Riverhead, 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.

    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
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    Southampton Commercial Building with Elevator
    $6,500,000
    5,200 SF

    Southampton Commercial Building with Elevator

    Newly built commercial building in the heart of Southampton Village.

    16 Hampton Rd, Southampton, NY 11968
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    Professional Office Building Near Green
    $639,900

    Professional Office Building Near Green

    Architecturally significant office building one block from Branford Town Green.

    71 Cedar St, Branford, CT 06405
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    Branford Commercial Building on 1.75 Acres
    $799,999
    2,325 SF

    Branford Commercial Building on 1.75 Acres

    Well-maintained, renovated commercial building suitable for medical offices or businesses.

    85 School Ground Rd, Branford, CT 06405
    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
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    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
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    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 Riverhead, NY

    Consider similar Off-Market properties in Riverhead, 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.

    46 2nd St

    46 2nd St

    OFFICE BUILDING • 8,894 SF
    Value Estimation
    $20,710,000
    46 2nd St, Riverhead, NY 11901
    View details
    220 Roanoke Ave

    220 Roanoke Ave

    OFFICE BUILDING • 13,500 SF
    Value Estimation by Request
    220 Roanoke Ave, Riverhead, NY 11901-2755
    View details
    212 Main St

    212 Main St

    OFFICE BUILDING • 4,126 SF
    Value Estimation
    $950,000
    212 Main St, Riverhead, NY 11901-2841
    View details
    165 Oliver St

    165 Oliver St

    OFFICE BUILDING • 3,054 SF
    Value Estimation by Request
    165 Oliver St, Riverhead, NY 11901-6216
    View details
    100 Ctr Dr

    100 Ctr Dr

    OFFICE BUILDING • 223,108 SF
    Value Estimation by Request
    100 Ctr Dr, Riverhead, NY 11901-3307
    View details
    1281 Old Country Rd

    1281 Old Country Rd

    OFFICE BUILDING • 2,436 SF
    Value Estimation by Request
    1281 Old Country Rd, Riverhead, NY 11901-2021
    View details
    896 Old Country Rd

    896 Old Country Rd

    PROFESSIONAL BUILDING • 16,800 SF
    Value Estimation
    $2,150,000
    896 Old Country Rd, Riverhead, NY 11901-2154
    View details
    132-134 Main St

    132-134 Main St

    OFFICE BUILDING • 2,080 SF
    Value Estimation by Request
    132-134 Main St, Riverhead, NY 11901
    View details
    129 Ostrander Ave

    129 Ostrander Ave

    OFFICE BUILDING • 1,056 SF
    Value Estimation by Request
    129 Ostrander Ave, Riverhead, NY 11901-4643
    View details
    240 Main St

    240 Main St

    OFFICE BUILDING • 5,250 SF
    Value Estimation
    $950,000
    240 Main St, Riverhead, NY 11901-2841
    View details
    1158 Main Rd

    1158 Main Rd

    PROFESSIONAL BUILDING • 2,050 SF
    Value Estimation
    $660,000
    1158 Main Rd, Riverhead, NY 11901-5728
    View details
    748 Roanoke Ave, Unit 756

    748 Roanoke Ave, Unit 756

    OFFICE BUILDING • 3,685 SF
    Value Estimation by Request
    748 Roanoke Ave, Riverhead, NY 11901-2795
    View details
    631 Old Country Rd, Unit 639

    631 Old Country Rd, Unit 639

    PROFESSIONAL BUILDING • 5,625 SF
    Value Estimation
    $330,000
    631 Old Country Rd, Riverhead, NY 11901-2103
    View details
    508 Main Rd

    508 Main Rd

    PROFESSIONAL BUILDING • 1,979 SF
    Value Estimation
    $1,160,000
    508 Main Rd, Riverhead, NY 11901-1906
    View details
    25 Cranberry St

    25 Cranberry St

    PROFESSIONAL BUILDING • 2,400 SF
    Value Estimation by Request
    25 Cranberry St, Riverhead, NY 11901-2799
    View details
    400 Ostrander Ave

    400 Ostrander Ave

    OFFICE BUILDING • 5,765 SF
    Value Estimation by Request
    400 Ostrander Ave, Riverhead, NY 11901-4614
    View details
    47 Commerce Ave

    47 Commerce Ave

    PROFESSIONAL BUILDING • 6,662 SF
    Value Estimation
    $320,000
    47 Commerce Ave, Riverhead, NY 11901-3106
    View details
    36 Osprey Ave

    36 Osprey Ave

    PROFESSIONAL BUILDING • 4,963 SF
    Value Estimation
    $390,000
    36 Osprey Ave, Riverhead, NY 11901-7303
    View details
    106 Griffing Ave

    106 Griffing Ave

    OFFICE BUILDING • 9,798 SF
    Value Estimation by Request
    106 Griffing Ave, Riverhead, NY 11901
    View details
    999 Old Country Rd

    999 Old Country Rd

    PROFESSIONAL BUILDING • 2,485 SF
    Value Estimation by Request
    999 Old Country Rd, Riverhead, NY 11901-2113
    View details

    Riverhead, NY Office Buildings Investment Opportunities Market Analysis

    Explore 88 office buildings for sale in Riverhead, NY, showcased through 4 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.

    Prices for office properties in Riverhead, 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 have the most current data.

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