Suffolk County NY Multifamily Homes & Duplexes for Sale

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  $5,775,000

  • 6 Beds
  • 5.5 Baths
  • 4,918 Sq Ft

  117 Mill Creek Close, Water Mill, NY 11976

  Set South of the Highway in a quiet Water Mill enclave, this renovated 6BR/5.5BA home offers 4,918 SF of luxury living. Features include a chef's kitchen, open-concept living/dining areas with fireplace, first-floor primary suite with deck & pool access, and finished lower level with media room, gym & game space. Outdoors enjoy a heated pool, tennis, pickleball, and mature landscaping. Located

  

  Dawn Watson

  SERHANT.

  (631) 407-2888

  117 Mill Creek Close, Water Mill, NY 11976
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  $849,000 Open Sat 12PM - 2PM

  • 3 Beds
  • 2 Baths
  • 1,897 Sq Ft

  2 Bayview Ave E, Lindenhurst, NY 11757

  Experience resort-style waterfront living in this beautifully updated legal 2-family home (by CO) with a separate 1-bedroom apartment, ideally located in a cul-de-sac along a canal leading directly to the Great South Bay. Offering nearly 2,000 sq. ft. of living space with panoramic water views from almost every room, this home is perfect for investment, multi-generational living, or

  Susan McCoy Your Home Sold Guaranteed Rlty

  2 Bayview Ave E, Lindenhurst, NY 11757
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  /2

  $650,000

  • 3 Beds
  • 2 Baths
  • 1,216 Sq Ft

  225 Oak St, Copiague, NY 11726

  Unique Opportunity in the Business E District! Legal duplex (with proper permits) with a detached 4+ car garage, fully tenant occupied. The main level and second floor apartments each provide rental income, along with additional income from the garage. Conveniently located near shopping, dining, and the train station, this property offers excellent commuter access and investment potential.

  Jennifer Ronzo Signature Premier Properties

  225 Oak St, Copiague, NY 11726
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  $640,000

  • 2 Beds
  • 2 Baths
  • 1,542 Sq Ft

  25 1st St, Islip, NY 11751

  Welcome to This Beautifully Updated 2 Family Home Located in the Charming Community of Islip. This Property Features Two 1-Bedroom Apartments With Private Entrances In An Enclosed Front Porch. Perfect for Anyone Interested In Income Potential. This Home Boasts a Spacious Backyard, a Two-Car Garage With Loft, And a Private Driveway. First Floor Unit Is Bright & Spacious With Beautiful

  Rosemary Marino Signature Premier Properties

  25 1st St, Islip, NY 11751
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  $895,000

  • 6 Beds
  • 3 Baths
  • 2,822 Sq Ft

  20-22 Williams St, East Northport, NY 11731

  Two-Family Colonial on a Quiet Cul-de-Sac in East Northport! Nestled at the end of a peaceful cul-de-sac in East Northport, this well-maintained two-family Colonial offers an exceptional opportunity for investors or those seeking flexible multi-generational living.The upper unit features 3 bedrooms and 1 full bath, while the lower unit boasts 3 bedrooms and 2 full baths. Each has separate

  Kathryn Martin Signature Premier Properties

  20-22 Williams St, East Northport, NY 11731
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  $1,800,000

  • 1 Bath
  • 990 Sq Ft

  75 Center Ave Unit 75 -77, Bay Shore, NY 11706

  **Welcome to Your Investment Opportunity: Multifamily Home for Sale!**Discover a fantastic investment in this well-maintained multifamily residence, featuring Four spacious apartments, each boasting three bedrooms and one bath. The property includes a full basement, offering additional storage and utility space for tenants. The current layout allows for comfortable living, with

  Tara Wright Howard Hanna Coach

  75 Center Ave Unit 75 -77, Bay Shore, NY 11706
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  /32

  $2,995,000

  • 4 Beds
  • 4 Baths
  • 3,500 Sq Ft

  30 Springwood Way, East Hampton, NY 11937

  Experience the serene elegance of this beautifully appointed home with water views in the heart of East Hampton. Nestled on an elevated half acre, this residence offers breathtaking views of Three Mile Harbor, allowing sunlight to bathe the interiors with warmth throughout the day. This recently renovated home combines charm and contemporary style. The main level welcomes you with an open-plan

  Susan Ryan Compass

  30 Springwood Way, East Hampton, NY 11937
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  /39

  $850,000

  • 4 Beds
  • 3 Baths
  • 3,487 Sq Ft

  46 Lincoln Ave, Sayville, NY 11782

  Welcome to 46–48 Lincoln Avenue—an incredible legal two-family home located in the heart of charming Sayville. Built in 1880, this side-by-side duplex blends timeless character with modern-day potential.Each unit features 2 spacious bedrooms, a massive third-floor attic offering endless storage or bonus space, private driveways, and separate detached 1-car garages—ideal for

  Shaughnessy Dusling Real Broker NY LLC

  46 Lincoln Ave, Sayville, NY 11782
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  /23

  $859,000 Open Sat 12PM - 2PM

  • 5 Beds
  • 3 Baths
  • 2,200 Sq Ft

  90 Blydenburg Ave, Smithtown, NY 11787

  This is a Legal Two Family Home by C/O. Each Unit has Separate Electric Meters and Gas Meters. It has a Two Car Garage attached to the First Floor Unit with Entry from Inside. Private Fenced In Backyard. There is a Common Entry Foyer with Separate Doors Leading to Each Unit. The First Floor 3 Bedroom 2 Bathroom Unit has Recently Been Renovated with New Laminate Flooring, Fresh Paint, and New

  Derek Greene Greene Realty Group

  90 Blydenburg Ave, Smithtown, NY 11787
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  /5

  $949,990

  • 4 Beds
  • 2 Baths

  918 10th St, West Babylon, NY 11704

  Welcome to this mint 2 family by C/O. Situated on a 80 X100 lot, updated kitchen and bath featuring 4 brs, 3 full baths, full finished basement with outside entrance, detached 2 car garage. Enjoy a peaceful serene yard. All information is deemed and reliable but not guaranteed. All offers must be in writing with pre-approval and proof of funds. Email to hugobgomez@hotmail.com.

  Hugo Gomez Dream Castle Realty

  918 10th St, West Babylon, NY 11704
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  /22

  $2,350,000 Open Sat 11:30AM - 1PM

  • 3 Beds
  • 3 Baths
  • 1,577 Sq Ft

  57 Jermain Ave, Sag Harbor, NY 11963

  Just Listed Corner of Oakland- Circa 1938 original. Well cared for with many upgrades and room for a pool. Three+ bedrooms, three full baths, a den, two kitchens, two living rooms. Expandable, room for pool, an affordable village manse ready for showings. The long side frontage is on Oakland, where the car park is, a stone's throw from Mashashimuet Park, Pickle Ball / Tennis and Otter Pond Park

  Simon Harrison Simon Harrison Real Estate

  57 Jermain Ave, Sag Harbor, NY 11963
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  /49

  $948,000

  • 6 Beds
  • 3 Baths

  49 Georgia St, East Northport, NY 11731

  Excellent opportunity to own a freshly updated, legal 2-family home in East Northport. Each spacious unit features 3 bedrooms, an eat-in kitchen, formal living and dining room, and an in-unit washer/dryer. Move-in ready, this low-maintenance property offers separate driveways and ample parking for both units. Conveniently located near shopping, transportation, and major parkways, and situated

  Nikki Sturges Daniel Gale Sothebys Intl Rlty

  49 Georgia St, East Northport, NY 11731
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  /16

  $595,000

  • 2,376 Sq Ft

  40 Garden Rd, Rocky Point, NY 11778

  Single family dwelling with an accessory apartment , comprising an upstairs unit with three bedrooms and one bath and ground-floor with one bedroom and one bath. Each unit has its own outdoor space—a deck for upstairs and a patio for down—plus separate parking areas.

  Lisa Oehler Serhant East End LLC

  40 Garden Rd, Rocky Point, NY 11778
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  $6,800,000

  • 6 Beds
  • 6.5 Baths
  • 9,931 Sq Ft

  8 Widow Coopers Path, Sag Harbor, NY 11963

  **Elegant and Spacious Retreat in North Haven Point** Discover a luxurious lifestyle at 8 Widow Coopers Path, an exceptional residence nestled in the prestigious gated community of North Haven Point. This majestic home, spanning an impressive 9,931 square feet on three levels, is a masterpiece of elegant design and modern comfort, built in 2011 with meticulous attention to detail. The residence

  Kathleen Zappola Compass

  8 Widow Coopers Path, Sag Harbor, NY 11963
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  $819,000

  • 4 Beds
  • 3 Baths

  11 Grove Ave, Saint James, NY 11780

  This unique property offers not one, but two separate dwellings on a beautifully half acre landscaped lot. The main residence is a well-maintained side-by-side split featuring 3 bedrooms, 2 full baths, hardwood floors, a cozy fireplace, and generous living space ideal for everyday comfort and entertaining.The second dwelling is a delightful 1–2 bedroom cottage complete with basement and

  Dawn Fischetti Douglas Elliman Real Estate

  11 Grove Ave, Saint James, NY 11780
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  /23

  $1,100,000

  • 4 Beds
  • 3 Baths

  4 Parkview Terrace, Huntington, NY 11743

  Legal Two Family Home In Huntington Village, Beautiful Moldings, Hardwood Floors, Two Fireplaces, 11 Ft. Ceilings InLivingroom With Fireplace, Kitchen With Fireplace. Fenced .25 Acre Property. Off Street Parking For Three Cars, Plus Street Parking. Full Basement, Gas Heating, Separate Hot Water Heater, Washer/Dryer.

  Barbara Lynch Daniel Gale Sothebys Intl Rlty

  4 Parkview Terrace, Huntington, NY 11743
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  /8

  $629,000

  • 1,755 Sq Ft

  44 Chapman Place, Bay Shore, NY 11706

  Don't miss this rare opportunity to own a well-maintained legal 2-family residence situated in a desirable neighborhood, just minutes from a major shopping center and a beautiful marina. This property offers excellent curb appeal and solid investment potential. Each unit features a private entrance, and the home is in good structural and exterior condition. Perfect for owner-occupants or

  Annie Meneses Realty Connect USA L I Inc

  44 Chapman Place, Bay Shore, NY 11706
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  $2,999,000

  • 4 Baths
  • 3,572 Sq Ft

  18 N Shore Rd, Montauk, NY 11954

  A RARE OPPORTUNITY TO OWN a one-of-a-kind, Multi-Family, Commercial/Residential property in beautiful Montauk! The property comprises 5 Cottages, a Main House with two separate apartments, as well as two accessory structures, all situated on a 1 acre parcel. Low Taxes! In addition, It is adjacent to the Lee E. Koppelman Nature Preserve, where one can enjoy 777 acres of untouched forest, and a

  Viviana Smith Douglas Elliman Real Estate

  18 N Shore Rd, Montauk, NY 11954
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  /18

  $1,199,000

  • 9 Beds
  • 4 Baths
  • 3,200 Sq Ft

  121 Rose Dr, Ronkonkoma, NY 11779

  3-unit multi-family apartment house plus cottage with water views of Lake Ronkonkoma. Built on a .45 acre parcel, there is ample on-site parking. All tenants are separately metered for gas & electric, and they have private and shared outdoor space. This property is located in the Connetquot Central School District, and is in close proximity to the Long Island Rail Road Ronkonkoma station and the

  Mark Walsh SELECT REAL EQUITY ADVISORS LLC

  121 Rose Dr, Ronkonkoma, NY 11779
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  /26

  $2,999,999

  139 Bayview Ave, Northport, NY 11768

  IMPROVED PRICING!! Motivated Seller, Renovated in 2019 with new vinyl siding, roof, gutters and windows. Located on municipal sewers, this is a waterfront property with a permanent dock and floating dock. Tenants are all separately metered for electric, and the steam boiler was replaced in 2025. All tenants have waterviews and dock access. Property has a 2 car garage with lower level storage

  Mark Walsh SELECT REAL EQUITY ADVISORS LLC

  139 Bayview Ave, Northport, NY 11768
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  $2,845,000

  • 10 Beds
  • 7 Baths
  • 3,750 Sq Ft

  73 North Rd, Hampton Bays, NY 11946

  Experience a rare offering in the Hamptons -- a turnkey compound of four detached residences nestled on a generous .6-acre parcel moments from coveted Peconic Bay beach access. This well-maintained property presents versatile investment potential as a year-round rental portfolio, a boutique bed & breakfast, or a generational compound. Situated east of the Shinnecock Canal, these residences are

  Lylla Carter Saunders & Associates

  73 North Rd, Hampton Bays, NY 11946
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  $1,650,000

  • 4 Beds
  • 4 Baths
  • 1,560 Sq Ft

  5 Champlain St, Ocean Bay Park, NY 11706

  Discover vibrant Ocean Bay Park, Fire Island’s beating heart, with this exceptional 3-family vacation home. Whether you’re a beach enthusiast, an investor, or both, this turnkey treasure is ready to captivate. Three stylishly furnished apartments offer private entrances, full kitchens, and tranquil outdoor spaces: a 1-bed, 1-bath sanctuary with gated deck; a chic 1-bed, 1-bath retreat with roof

  Jeanne Landolfi Jones Hollow Realty Group Inc

  5 Champlain St, Ocean Bay Park, NY 11706
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  /13

  $2,495,000

  18 Lake Side Dr, Southampton, NY 11968

  Big Fresh Pond waterfront family compound. Never before offered for sale to the public! Unique opportunity to acquire three separate parcels including three legal houses - a Main house and two cottages - along with a single and seperate waterfront parcel. This assemblage is the perfect family compound or an investor's income producing Hampton's play. By appointment only.

  Scott Strough Compass

  18 Lake Side Dr, Southampton, NY 11968
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  $3,395,000

  • 5 Beds
  • 7 Baths
  • 4,620 Sq Ft

  200 Great Hill Rd, Southampton, NY 11968

  200 Great Hill Road, a serene 3.5-acre property nestled in nature, adjacent to a protected reserve. This 4,620 square foot home has been custom-built with meticulous attention to detail, featuring master suite conveniently located on the first floor with privacy and comfort. There are five bedrooms, in total, along with 5 baths and 2 half baths. The chef's kitchen is equipped with high-end

  Katie Milligan Compass

  200 Great Hill Rd, Southampton, NY 11968
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  $9,950,000

  • 6 Beds
  • 10 Baths
  • 4,635 Sq Ft

  12 Marsden St, Sag Harbor, NY 11963

  You can HAVE IT ALL in this new constructed home being built by custom builder Trunzo Building Contractors, now in its third generation. On a rare, large .76 acre property located just half a mile from the Sag Harbor's Main Street restaurants and shops and just 1 mile from the beach. This generous well-proportioned, warm-toned, metal-roofed contemporary farmhouse style residence is accompanied by

  Lori MacGarva William Raveis (East Hampton)

  12 Marsden St, Sag Harbor, NY 11963
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  /36

  $4,495,000

  • 4 Beds
  • 4 Baths
  • 4,750 Sq Ft

  61 Lower 7 Ponds Rd, Water Mill, NY 11976

  61 Lower Seven Ponds Road, a hidden gem in the heart of Water Mill where luxury living meets unspoiled natural beauty. Set on nearly 9 acres of lush, parklike grounds, this extraordinary estate offers a rare combination of serenity, space, and potential in one of the Hamptons' most sought-after enclaves. The main residence blends timeless charm with endless opportunity. Currently featuring

  Craig Beem Brown Harris Stevens (Bridgehampton)

  61 Lower 7 Ponds Rd, Water Mill, NY 11976
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  /27

  $2,559,000

  • 6 Beds
  • 3 Baths

  572 Montauk Hwy, Westhampton Beach, NY 11978

  Acre plus property with 2 bed 1 bath Rental or Guest Cottage plus 3-4 bed 2 bath house. Both in pristine condition. Lot has room for pool, tennis, expansion of existing structures or possible sub division. Presently used as a licensed Airbnb with a property manager and cleaning service.

  Rosanna Gleixner Moriches Bay Realty

  572 Montauk Hwy, Westhampton Beach, NY 11978
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  $2,395,000 Open Sat 11AM - 2:30PM

  • 4 Beds
  • 3 Baths
  • 2,600 Sq Ft

  37 Coves End Ln, Sag Harbor, NY 11963

  Discover the epitome of modern elegance at 37 Coves End Lane in North Haven, NY. A custom-built, transitional style home with 2,600+/- sf of beautifully designed interior living space just outside the Village of Sag Harbor. Featuring 4 bedrooms and 3 full bathrooms, this residence is designed for those who appreciate luxury and style. The gourmet kitchen is a chef's dream, featuring a Viking

  Craig Beem Brown Harris Stevens (Bridgehampton)

  37 Coves End Ln, Sag Harbor, NY 11963
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  /14

  $720,000

  • 4 Beds
  • 3 Baths

  185 Meucci Ave, Copiague, NY 11726

  Multi-family property located in the Town of Babylon. This is a rare and unique opportunity to purchase an affordable multi-family property, and generate income. There are two single family homes on .18 acre parcel. Both homes have been recently renovated and are separately metered for gas and electricity. Both structures have a basement. The front house offers 3 bedrooms and 2 baths, and the

  Mark Walsh SELECT REAL EQUITY ADVISORS LLC

  185 Meucci Ave, Copiague, NY 11726
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  /36

  $6,250,000

  • 5 Beds
  • 4.5 Baths
  • 3,000 Sq Ft

  825 Dune Rd, Westhampton Beach, NY 11978

  Ocean Escape - Your Private Oasis and View of the Sea Step onto your private boardwalk, where the scent of salt air fills your lungs, and the soft whisper of the waves calls you forward. Beneath your feet, the sun-warmed planks lead you over the rolling dunes, each step bringing you closer to the endless blue horizon. Ocean Escape-is not just a home; it is a sanctuary of light, air, and water, a

  Lisa Fasano Compass

  825 Dune Rd, Westhampton Beach, NY 11978
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  /20

  $454,000

  • 1 Bed
  • 1 Bath
  • 810 Sq Ft

  236 Edgemere St Unit 131, Montauk, NY 11954

  This first floor completely renovated light filled one bedroom one bath loft offers comfortable living and entertaining arrangements. As soon as you walk into this spacious 810 square foot apartment you are blasted with natural southern light and immediately you are transported to a state of calm. The twenty-foot floor to ceiling palladium windows that surround the kitchen- the dining room and

  Carolann Sandoval Martha Greene Real Estate LLC

  236 Edgemere St Unit 131, Montauk, NY 11954
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  $11,500,000

  • 6 Beds
  • 8 Baths
  • 5,000 Sq Ft

  100 Bay St, Sag Harbor, NY 11963

  Discover the timeless charm of historic Sag Harbor, where exclusivity meets elegance without compromising privacy or the ability to entertain in style. Perfectly situated on one of the most sought-after streets in Sag Harbor, this remarkable property is just steps away from the lively village and directly opposite the area's exclusive beach. Offering a rare combination of privacy and expansive

  Susan Ryan Compass

  100 Bay St, Sag Harbor, NY 11963
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  /27

  $749,999

  • 4 Beds
  • 2 Baths
  • 2,694 Sq Ft

  60 Lincoln Ave, Sayville, NY 11782

  Unmissable Opportunity to Own a 2-Family Home! Welcome to an exceptional investment or living opportunity in Sayville. This tenant-occupied property boasts two well-maintained units, each offering a private entrance, a kitchen, a combined living and dining area, two spacious bedrooms, and a full bath. The convenience of a full walk-up attic adds abundant storage and potential. Private Entrances:

  Jacqueline Nett Douglas Elliman Real Estate

  60 Lincoln Ave, Sayville, NY 11782
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  $950,000

  • 6 Beds
  • 3 Baths
  • 2,970 Sq Ft

  10 Sally Ln, Ridge, NY 11961

  Excellent Investment Opportunity. Legal (by CO) three family house with great income. Well maintained and updated with all newer kitchens and baths, newer roof and oil burners. Tenants pay for their own electric and heat, owner pays for taxes, water and insurance. Currently fully Tenanted; Apt. 1 pays $2650/mo. Apt. 2 & 3 each pay $2350/mo. NOI over $70,000 per year. (pro-forma is attached).

  Carmine Capobianco Coldwell Banker American Homes

  10 Sally Ln, Ridge, NY 11961
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  $2,245,000 Open Sat 12PM - 2PM

  68 Little Neck Rd, Southampton, NY 11968

  Southampton Waterfront with Dock Discover the best of waterfront living at this desirable south of the highway property. Perfect for those who enjoy boating and the outdoors. Located on Old Fort Pond with direct access to Shinnecock Bay and the ocean beyond. The two-family home with a dock and ample land provides a unique blend of privacy and salt air lifestyle. The open floor plan across both

  Angela Boyer Sothebys Int'l Realty Hamptons

  68 Little Neck Rd, Southampton, NY 11968
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  /6

  $2,695,000

  • 3 Beds
  • 2 Baths
  • 1,700 Sq Ft

  700 Edge of Woods Rd, Water Mill, NY 11976

  Interior Photos Coming Soon. Discover your dream home at 700 Edge of Woods in Water Mill, now available for sale. This beautifully renovated 3-bedroom, 2-bathroom residence underwent a complete transformation in 2024. The home boasts a modern kitchen with brand-new appliances, two custom-designed bathrooms, and stylish new designs. The lower level has been thoughtfully reimagined to include a

  Craig Beem Brown Harris Stevens (Bridgehampton)

  700 Edge of Woods Rd, Water Mill, NY 11976
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  /3

  $799,000 Open Fri 5PM - 7PM

  756 & 756 A 760 S Hickory St, Lindenhurst, NY 11757

  Discover this waterfront ranch, perfectly positioned for both comfort and investment. This high and dry property comes with an elevation certificate, ensuring low flood insurance costs. One side of the home features 3 bedrooms and the other side has 2 Bedrooms, an eat-in kitchen, a living room, and a full bath, all under impressive 10' ceilings. Both units offer access to large attics via

  David Sanders Compass Greater NY LLC

  756 & 756 A 760 S Hickory St, Lindenhurst, NY 11757
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  /20

  $1,950,000

  • 6 Beds
  • 5 Baths

  39 Halsey Ave, Southampton, NY 11968

  Heart of Southampton Village! You can renovate this property and move in. Or you could build your dream home. Please call me. The seller is motivated and we are looking for offers looking to close this sale this fall. Please give us a call and schedule a showing. The house is , totally vacant and freshly painted. VACANT - Tenants just moved out ! Ready for immediate move in. Located

  Bradford Goven BERKSHIRE HATHAWAY

  39 Halsey Ave, Southampton, NY 11968
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  /20

  $539,000

  • 3 Beds
  • 2.5 Baths
  • 2,031 Sq Ft

  59 Crossbar Rd Unit 59, Medford, NY 11763

  Welcome to this stunning 3 Bedroom, 2.5 bath Condo located in the desirable Country Pointe Community. This home offers an ideal blend of luxury, comfort and convenience in a beautiful gated community. Interior Features include Kitchen with Granite Counters, Stainless Steel Appliances, Gas Stove and a bright Breakfast Nook. Walk into a sun soak Vaulted Ceiling Living Room, Formal Dining Room,

  Eugene Mincone Signature Premier Properties

  59 Crossbar Rd Unit 59, Medford, NY 11763
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  /8

  $479,000

  • 2 Beds
  • 2 Baths
  • 966 Sq Ft

  742 S 9th St, Lindenhurst, NY 11757

  This affordable legal 2 family waterfront is perfect for that savvy buyer who wants the enjoyment of a super wide, deep, canal and water views headed seconds out to the bay, hitting all the beaches, and Fire Island. Low taxes Great beach living in Lindy Village-close to schools, parkways and shopping and wonderful downtown Lindenhurst including the LIRR. Interior renovations approximately 11

  Mary Ann Murphy Call Murf Real Estate Co Inc

  742 S 9th St, Lindenhurst, NY 11757

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