Quick Middlesex NJ MLS Search

Browse All Middlesex NJ Multi-Family Properties for Sale

$650,000
5 Beds 2 Baths
Exceptional opportunity to own a well-maintained two-family home in the heart of New Brunswick, offering the perfect blend of owner-occupancy and investment potential. Whether you're looking to live in one unit while generating rental income from the other or add a strong asset to your investment portfolio, this versatile property delivers outstanding value in one of Central New Jersey's most sought-after rental markets. The first-floor unit features 2 spacious bedrooms and 1 full bathroom, complemented by beautiful hardwood flooring throughout. A bright and inviting living room flows into a formal dining room, while the well-appointed kitchen comes complete with a refrigerator, gas range, dishwasher, washer, and dryer, providing everything needed for comfortable everyday living. The second-floor unit offers 3 generously sized bedrooms and 1 full bathroom, also showcasing hardwood flooring throughout. The spacious living room and dining area provide an inviting layout, while the kitchen is equipped with a refrigerator, gas range, dishwasher, washer, and dryer. Exclusive to this unit is a finished walk-up attic, adding substantial additional living space. This versatile bonus level is ideal for additional bedrooms (buyer to verify permitted use), a home office, media room, fitness area, playroom, hobby space, guest quarters, or abundant storage, creating endless possibilities to suit your lifestyle. The full basement is accessible from the rear stairwell serving both units and provides ample storage space along with convenient access to utilities. Outside, the fully fenced backyard offers plenty of room for outdoor entertaining, gardening, pets, or simply relaxing. Perfectly positioned just minutes from Robert Wood Johnson University Hospital, Saint Peter's University Hospital, Rutgers University, and the vibrant downtown New Brunswick district, you'll enjoy easy access to acclaimed restaurants, entertainment, shopping, and cultural attractions. Commuters will appreciate being just moments from the New Brunswick Train Station, offering both NJ Transit and Amtrak service for convenient travel throughout New Jersey, New York City, Philadelphia, and beyond. Whether you're an investor seeking strong rental demand or a homeowner looking to offset your mortgage with rental income, 40 Throop Avenue presents an exceptional opportunity to own a versatile multi-family property in a prime New Brunswick location.

40 Throop Avenue, New Brunswick

Listing courtesy of RE/MAX Central. Contact:

$625,000
5 Beds 2 Baths
Space, versatility and a location that makes getting around easy--393 Prospect Street has a lot to offer! This legal two-family home offers approximately 2,100 sq. ft. of living space on an oversized property, creating options for both owner-occupants and investors. Live in one apartment and rent the other, accommodate extended living needs, or add a two-family property to your investment portfolio. The first-floor apartment offers 3 bedrooms and 1 full bath, while the second-floor apartment features 1 bedroom, 1 full bath and a balcony off the kitchen. Need more space? The attic includes a carpeted storage room. Outside is where this property really stands out! Relax on the covered front porch, enjoy the fenced yard and extra-wide side yard, and take advantage of driveway parking for 6 cars. And then there's the impressive 21' x 42' detached garage--an exceptional amount of additional space and a feature you simply don't find every day. Important improvements add to the appeal, including a newer house and flat roof, furnace (2025), updates to the first-floor bath (2025), garage roof (approx. 2025), new driveway, curbs and sidewalk (2026), and vinyl windows. And don't overlook the location! Convenient to downtown South Amboy, NJ TRANSIT train service to New York, NYC ferry service, major roadways and the Raritan Bay waterfront. With two-family living, an oversized property, abundant parking and a truly oversized detached garage, this is a property with space, flexibility and possibilities!

393 Prospect Street, South Amboy City

Listing courtesy of NextHome Realty Premier Properties. Contact:

$600,000
4 Beds 2 Baths
An incredible opportunity to own a two-family home with space, flexibility, and income potential! Whether you're looking to live in one unit while renting the other or add a versatile property to your portfolio, this Port Reading home has so much to offer. Each unit features its own private entrance and offers 2 bedrooms, 1 full bathroom, a living room, kitchen, and screened-in porch. Both units have been freshly painted and refreshed with new flooring and new mini blinds, creating bright, clean spaces ready for their next occupants. For an owner-occupant, the two-family layout offers the added benefit of potential rental income to help offset the costs of homeownership. Outside, you'll find a huge lot and large driveway, providing plenty of room to enjoy the property along with ample off-street parking. A full unfinished basement with washer and dryer adds valuable utility and storage, while the unfinished attic provides even more storage space and plenty of potential for the next owner to bring their own vision. For commuters, the location is hard to beat! The NYC bus stop is less than 100 feet away, and Woodbridge Train Station is approximately one mile from the property, offering convenient access to multiple transportation options. Freshly updated interiors, income potential, generous outdoor space, private entrances, and NYC transportation practically at your doorstep--407 Port Reading Avenue is ready for its next chapter!

407 Port Reading Avenue, Port Reading

Listing courtesy of Real Broker, LLC- Point P. Contact:

$860,000
6 Beds 2 Baths
Renovated 2 family house ready to go! This multifamily home in a prime New Brunswick location! Both units feature brand new kitchens with stainless steel appliances, new LVP flooring throughout, new doors, and fresh paint throughout. Separate utilities/meters and a full basement add convenience and investment appeal. First-floor unit offers 2 bedrooms, living room, dining room, full bath, and an eat-in kitchen. Dining room can easily be converted into a third bedroom. Second-floor unit features 4 bedrooms, 1 full bath, spacious family room, and an eat-in kitchen, with access to a high-ceiling attic offering and full basement with great potential! Situated on a large lot with a spacious backyard, long driveway fitting 4+ cars, detached 2-car garage, and plenty of off-street parking Conveniently located near Rutgers University, Robert Wood Johnson University Hospital, downtown New Brunswick restaurants and shopping, NJ Transit train station, major highways including Route 18, Route 1, NJ Turnpike, and public transportation. .Just blocks from the center of New Brunswick and the train station. Enjoy the amazing dining options that have been added to New Brunswick in the past several years. Go over to the State Theater and watch a play or performance. The detached 2 car garage affords the new owner the opportunity to have additional income. Excellent opportunity for owner-occupants or investors!

105 Louis Street, New Brunswick

Listing courtesy of Coldwell Banker Realty. Contact:

Selling Office: NON MEMBER.

$660,000
4 Beds 2 Baths
Rare Two-Family Opportunity with Huge Yard & Bonus Outbuilding. Well-maintained property featuring two 2-bedroom, 1-bath units, ideal for investors or owner-occupants seeking income and flexibility. Each unit offers bright living spaces, updated flooring, recessed lighting, well-sized bedrooms, functional kitchens with ample cabinetry and appliances, and clean bathrooms. The basement includes mechanicals, laundry, and storage. Enjoy a large open yard rarely found with multi-family homes plus a detached enclosed outbuilding/sunroom for storage, workshop, or hobbies. Conveniently located near major highways, shopping, and restaurants. Live in one unit and offset your mortgage with rental income. First showings: Sat 3/21 & Sun 3/22, 12-2 PM. Rare Two-Family Opportunity with Huge Yard, Bonus Outbuilding & Income PotentialOpportunities like this don't come around often. This well-maintained two-family property featuring two 2-bedroom, 1-bath units offers flexibility, income potential, and space ideal for investors or owner-occupants looking to build wealth through real estate.Each unit offers bright living spaces, updated flooring, recessed lighting, and well-sized bedrooms designed for comfortable everyday living. Kitchens feature ample cabinetry, full appliances, and functional layouts, while the bathrooms are clean and well maintained.The basement provides mechanical systems, laundry area, and additional storage, adding convenience and long-term functionality.Outside, enjoy one of the property's standout features a large open yard rarely found with multi-family homes, offering space for outdoor enjoyment, entertaining, gardening, or future possibilities. The property also includes a detached enclosed outbuilding/sunroom, ideal for storage, workshop space, hobbies, or creative use.Conveniently located near major highways, shopping, restaurants, and everyday amenities, the home offers easy commuting while maintaining a comfortable residential setting.Live in one unit and offset your mortgage with rental income, or add a strong income-producing property to your portfolio.First group showings: Saturday 3/21/26 & Sunday 3/22/26, 12"2 PM.

13 Millers Lane, Milltown

Listing courtesy of RE/MAX First Realty. Contact:

Selling Office: C21/ Sylvia Geist Agency.

$955,000
4 Beds 4 Baths
33 Obert Street - Fully Renovated 4-Family Investment Opportunity in South River! Introducing an exceptional turnkey investment property that checks every box. 33 Obert Street is a true WOW—a fully renovated four-family home where no detail was overlooked. The entire property was taken down to the studs and rebuilt with modern systems, clean lines, and long-lasting efficiency, making it an ideal low-maintenance addition to any portfolio. Each unit showcases a fresh, contemporary design and comes equipped with: Energy-efficient ductless split systems for heating & cooling + Brand-new hot water heaters + New appliances including ranges, refrigerators, and microwaves + Updated flooring, kitchens, bathrooms, lighting, and finishes. Every space feels bright, modern, and thoughtfully executed creating strong appeal for renters and excellent long-term rental stability. Whether you're a seasoned investor or just expanding your real estate footprint, this property offers: Multiple streams of rental income Low operating costs due to new systems and renovations Strong projected cap rate with room for rental growth With all the heavy lifting already done, this is the type of investment you don't have to chasejust close and collect. A rare opportunity to own a fully updated multi-family with unmatched value, longevity, and return potential. The South River downtown is currently in redevelopment with new buildings and retail stores coming in! Schedule a private showing today and see why 33 Obert Street will be one of the easiest and smartest investment decisions you'll make this year.

33 Obert Street, South River

Listing courtesy of RE/MAX Central. Contact:

Selling Office: Realty One Group Central.

$775,000
5 Beds 4 Baths
Experience breathtaking, unobstructed views of the Raritan Bay in this meticulously maintained side-by-side duplex. Picture yourself enjoying sunrise over Sandy Hook from the private primary bedroom balcony, or dining in your full-length enclosed porch as city lights shimmer across the water each evening. Enjoy morning coffee or entertain friends with panoramic bay vistas and direct boardwalk access—truly waterfront living at its finest. Set at the perfect elevation above Old Bridge Waterfront Park, flood insurance is not a worry. Pride of ownership shines throughout: cherry hardwood floors add warmth, while recent upgrades include a brand-new roof (2024), newly rebuilt front porch (2025), climate-controlled enclosed porch, updated half bath fixtures, new dishwasher and microwave , custom blinds, new lighting, screen doors, and a spacious wraparound deck for outdoor living. The duplex is flexible: rent both units for investment income, or live in one while leasing the other. One unit features three bedrooms and one and a half bathrooms; the second offers two bedrooms and two full bathrooms. Each side enjoys private utilities for convenience and cost control. Currently, one unit is owner-occupied, with the other tenant-occupied. Commuter-friendly locationclose to major highways, NJ Transit bus routes, and just a short ride to the Jersey Shore. Discover the rare combination of serene waterfront lifestyle and unbeatable accessibility. Schedule your visit today and make this exceptional coastal duplex your new home!

238-239 Shoreland Circle, Laurence Harbor

Listing courtesy of Keller Williams Realty West Monmouth. Contact:

Selling Office: Signature Realty NJ.

Start Your Search

Middlesex Multi-Family Real Estate

Our website features the best real estate search for multi-family properties available in Middlesex and surrounding areas. It is the only site you will ever need! It is easy-to-use and updated by the official Realtor®’s database every 15 minutes. 

You can save searches, and get daily email alerts of new listings, price changes, sold data, and market reports. Our Interactive Map Search allows you to view properties on a map or refine your search by drawing the boundaries around the area you desire. 

Curious about what’s happening in your neighborhood? You can create a custom market report to see what’s active, under contract, and sold in your neighborhood! 

Considering selling or refinancing your home? Get an INSTANT property valuation now!

Contact us today to find out how we can be of assistance to you!