Suffolk County Real Estate Search

Suffolk County Commercial Properties for Sale

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Newest Suffolk County Commercial Properties for Sale

$699,999
991330 MLS
Spacious and well-designed medical office offering a highly functional layout ideal for a variety of healthcare practices. Easily accessible and offering exceptional visibility, this property is ideally located on Sunrise Highway, a heavily traveled corridor providing high exposure and convenience. The main level features a welcoming reception area, multiple waiting rooms, and three private exam rooms, along with a dedicated doctor’s office, lab, and employee workstations for scanning and administrative needs. Clinical efficiency is supported by a vaccine refrigerator area, scale and eye chart station, and ample storage including a samples closet. The property includes multiple restrooms, including a handicap-accessible bathroom, and is fully ADA-compliant with a wheelchair/stroller ramp and designated handicap parking. Separate entrances for patients and staff, including a main entrance and employee/kitchen access, allow for smooth workflow and privacy. Application pending approval with the Town of Islip for use as a medical office or similar use. Additional highlights include a private office manager space, kitchen/break area, and a full basement with stairwell access perfect for storage, expansion, or additional operational use. The layout also offers multiple access points and emergency exits for safety and convenience. Situated with a large parking lot for patients and staff, this property provides an exceptional opportunity for medical professionals seeking a turnkey space with strong infrastructure and thoughtful design.

3250 Sunrise Highway, East Islip

$790,000
987906 MLS
This property is zone J6. J6 zoning in the Town of Brookhaven is the "Main Street Business" district, designed to foster pedestrian-friendly, mixed-use development in hamlet centers, often replacing older J2 Neighborhood Business districts. It emphasizes local retail, personal services, offices, and residential units, typically prohibiting drive-through facilities to encourage a traditional downtown atmosphere. J6 districts are designed to encourage a mix of commercial and sometimes residential uses, with permitted activities including: Retail & Services: Shops, custom work, and retail sales of consumer merchandise. Offices & Banks: Professional offices and banks without drive-through services. Community & Arts: Art galleries, artist studios, museums, and community centers. Services: Delicatessens, laundromats, and personal service shops. Residential: Mixed-use buildings, often allowing apartments above commercial space. Main building is completely renovated with 4 separate new meters, All new electric thru out, new roof siding and windows, plumbed out for 3 bathrooms and you can design for one or 3 different rentals, plus a huge full unfinished basement with out side entrance, Brand new Heat and CAC too. Free standing house has its own meter. (Previously was rented to an Insurance company for years.) Plenty of Parking lot parking and wonderful great signage spot on the main Rd on 25A. Parking lot entrance from both 25A and Peacock Rd. Large main building is 2000 Sq ft plus 2000 sq ft basement. 2nd building is 1500 sq ft.

575 Route 25A, Rocky Point

$750,007
986114 MLS
Prime opportunity to acquire a professional medical/office building in a highly visible location along Roanoke Avenue in Riverhead. This approximately 1,452 SF building is ideally suited for medical, wellness, or general office use, featuring multiple treatment/exam rooms, reception area potential, and flexible interior layout. Situated on a generous 9,500+ SF lot with on-site parking, the property offers excellent accessibility for both patients and staff. Strategically located near Peconic Bay Medical Center, major roadways, and Riverhead’s commercial corridor, this property benefits from strong traffic exposure and a steady flow of local clientele. Ideal for owner-users, medical professionals, or investors seeking a well-positioned asset in a growing East End market. Interior Features Multiple exam / treatment rooms Reception / waiting area Private office space 2 bathrooms Flexible floor plan for medical or professional use Central air conditioning ADA adaptability potential (buyer to verify) Exterior Features On-site parking / private driveway Large lot with expansion potential Strong road frontage and visibility Easy ingress / egress Location Highlights High-visibility corridor on Roanoke Avenue Minutes to Peconic Bay Medical Center Close proximity to Route 58 retail corridor Easy access to Long Island Expressway (I-495) Central to Suffolk County East End communities Ideal Use Cases Medical practice (acupuncture, chiropractic, PT, primary care, etc.) Wellness center / integrative medicine clinic Professional office (legal, accounting, consulting) Investment property with rental income potential

976 Roanoke Avenue, Riverhead

$17,900,000
975962 MLS
Positioned on prestigious Dune Road, just moments from the Atlantic Ocean and the Shinnecock Inlet, 369 Dune Road presents a singular opportunity to acquire one of the Hamptons' most recognized waterfront destinations. Home to the iconic Sundays on the Bay, this fully operational restaurant and marina combines hospitality, marine infrastructure, and irreplaceable location in one exceptional offering. Set against panoramic sunset views over the bay, the restaurant features 118 indoor seats framed by expansive windows that capture the waterfront setting, along with a spacious outdoor deck offering an additional 77 seats and two full-service bars. The atmosphere is vibrant yet refined - a proven draw for locals, seasonal residents, and boating clientele alike. The marina is equally compelling, offering 30 deepwater slips accommodating vessels up to 90 feet, with direct Atlantic access via the Shinnecock Inlet - ideal for sportfishing yachts and luxury craft. The property includes a fuel dock with approximately 12,000 gallons of diesel and 10,000 gallons of gasoline storage capacity, a well-maintained bulkhead, and professional-grade marine infrastructure. Additional improvements include a ±2,000-square-foot accessory structure currently utilized as an ice house, providing flexibility for expanded marine or hospitality use. With its unmatched waterfront exposure, established reputation, and rare zoning profile, 369 Dune Road offers extraordinary potential for continued hospitality operations, marina expansion, or strategic waterfront redevelopment. Opportunities of this scale and visibility on Dune Road are exceptionally rare. This listing may include images that have been digitally altered or virtually staged. Original, unedited images are available upon request.

369 Dune Road, Hampton Bays

$6,495,000
973528 MLS
NNN Investment Sale - 8 CAP Sale-Leaseback Which is the Highest on the Entire East End. Institutional-Grade Credit Tenant in a Key Riverhead Opportunity Zone. Best-in-Class NNN Yield With Credit Tenancy – This 26,235sf office building offers a stabilized sale-leaseback with a credit tenant in place under a new 10-year NNN lease, delivering an approximate 8 CAP - a yield profile that is exceptionally rare across the East End. The tenancy is stable and self-servicing, creating a true hands-off ownership opportunity with landlord responsibilities minimized by full NNN expense coverage. Currently single-tenant, the building also presents long-term flexibility to convert to multi-tenant if desired thanks to two separate tax parcels. Expanded twice over time, the structure provides a vast and differentiated layout: the first floor and two second-floor wings include private offices, conference rooms, kitchens, waiting areas, foyers, and open workspaces, while a full egress basement supports additional office/storage, archives, mechanicals, and a kitchen. Durable Building Infrastructure Supporting Long-Term Occupancy – An architecturally distinctive asset that blends historic character with modern systems, including elevator access, sprinklers, and preventative maintenance - supporting tenant retention and institutional-grade functionality. Downtown Riverhead Location With Civic Anchors – Positioned in the heart of Riverhead’s historic downtown on 0.32 acres, directly across from Town Hall, one block from Main Street, and half a block from the Suffolk County Supreme Court. The setting reinforces long-term relevance and supports future upside as the downtown corridor continues to evolve. Opportunity Zone Upside – Located within Riverhead’s designated Opportunity Zone - providing potential tax-advantaged considerations and appreciation leverage tied to ongoing revitalization and investment activity. Scarce East End Investment Format With Liquidity Appeal – A long-term NNN sale-leaseback at an approximate 8 CAP is virtually unmatched in the Hamptons/East End investment landscape, making this offering especially compelling for 1031 exchange buyers, passive investors, and groups seeking predictable income with minimal management burden.

33 W 2nd Street, Riverhead

$2,450,000
973350 MLS
Freestanding Commercial Building - Rare VB-Zoned Property with Private Parking in the Southampton Village Core. Exceptional Accessibility in Prime Village Location – Located in the heart of Southampton Village’s Business District, this 0.25-acre property offers a rare freestanding commercial building with on-site parking - an increasingly scarce feature within the Village core. The property’s clean stucco façade and central positioning make it a strong presence along one of the area’s most established corridors. Versatile Two-Level Layout with Private Parking – The 2,640sf structure is currently configured for single-tenant use but can be easily adapted for multi-tenant occupancy. The ground floor offers open-plan retail or office space with high ceilings, while the upper level provides additional workspace or storage. The layout includes one full bathroom and one half bathroom, adding significant operational flexibility for both staff and client needs. Furthermore, an on-site generator ensures stable, uninterrupted operations, which is a critical asset for medical, professional, or retail users. The site also includes 15 parking spaces plus a two-car garage, providing unmatched convenience in a high-traffic area. Flexible VB Zoning with Broad Use Potential – Village Business zoning allows for an extensive range of commercial uses, including bank, professional or medical office, personal service, and retail. Special Exception uses further expand the property’s potential, including restaurant or second-floor apartments. The property’s adaptability makes it ideal for investors or those seeking a long-term headquarters.

28 Cameron Street, Southampton

$899,000
970295 MLS
High-performing mixed-use property that blends stable residential income with strong commercial potential in one of Lindenhurst’s most convenient and visible locations. The building includes two well-kept residential units—both occupied by reliable, good-paying tenants—along with a vacant commercial storefront that offers immediate upside for an investor or owner-operator. The second floor features a comfortable two-bedroom, one-bathroom apartment, while the first floor offers a spacious two-bedroom, one-and-a-half-bathroom unit, each generating consistent monthly income. The ground-floor commercial space has excellent street visibility and a history of successful uses, including a deli, a dog-grooming salon, and private offices, demonstrating its versatility and strong demand across different business types. A standout advantage of the property is its exceptional parking layout, with a large dedicated lot for commercial customers and separate private parking for residential tenants—an amenity that significantly enhances both leasing appeal and long-term value. The location further strengthens the property’s investment profile. Situated in the heart of Lindenhurst Village, the building sits just moments from the LIRR station, making it ideal for commuters and highly attractive for businesses seeking steady foot and vehicle traffic. The surrounding neighborhood is vibrant and walkable, with nearby restaurants, cafés, shops, and essential services creating a built-in customer base. Its proximity to Sunrise Highway and Montauk Highway provides easy regional access, while the South Shore’s coastal amenities—Cedar Beach, Gilgo, and other waterfront destinations—add lifestyle appeal for residents. Altogether, this is an exceptional income-generating opportunity offering stability, versatility, and significant growth potential in a prime, high-demand location.

150 N Delaware Avenue, Lindenhurst

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Listings courtesy of OneKey® MLS as distributed by MLS GRID. Based on information submitted to the MLS GRID as of . All data is obtained from various sources and may not have been verified by broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information.