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Florida Keys Multi-Family Homes for Sale in the Florida Keys

Buying a multi-family home for sale in the Florida Keys provides a great chance to live in this beautiful tropical destination.  This type of housing includes homes like duplexes in the Keys or even triplexes or larger options.  Often, Florida Keys multi family houses offer very affordable alternatives to more traditional real estate and can allow buyers to find great deals in the area.  If this type of housing is something that you are interested in exploring, view our complete list of multi family properties available in the Florida Keys here.

Total Listings 70
Order By:

$529,000
Marathon
Reimanns Subdivision   - MM: 51.00
2 Bed, 2 Baths, 768 SqFt Days Listed: 172
-3.64% ($20,000) 1 Price Change : Last Change 92 Days Ago
Half Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Nothing compares to this non-waterfront half duplex ideal for first time home buyers, or a local business owner looking to house employees. This listing is for the FRONT half of the duplex only. Immense opportunity abounds here, no matter the situation. Stilted wood frame construction with stucco exterior, accordion shutters and 2019 5V crimp metal roof. Located just second in from the end of the street, enjoy privacy due to location and Ocean views from the open-air porch. This half duplex offers two-bedrooms, one-bathroom, just under 800 square inside on a 5,448 sf lot. Inside, find the open concept living area that leads right to the kitchen with peninsula and bar counter seating. Both bedrooms are spacious and offer plenty of natural light. Gracious carport parking on first level for multiple vehicles and storage, or enclose this area for further protection from the elements. Freshly graveled yard allows for parking for all trailers and toys, or install a fence for separation from the back half if desired. Assumable flood insurance available. Full duplex offered for sale (MLS 610715) and back half (1297 73rd) also offered for sale (MLS 610714). Please do not walk the property.

$529,000
Marathon
Reimanns Subdivision   - MM: 51.00
2 Bed, 2 Baths, 768 SqFt Days Listed: 172
-3.64% ($20,000) 1 Price Change : Last Change 92 Days Ago
Half Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Nothing compares to this non-waterfront half duplex ideal for first time home buyers, or a local business owner looking to house employees. This listing is for the BACK half of the duplex only. Immense opportunity abounds here, no matter the situation. Stilted wood frame construction with stucco exterior, accordion shutters and 2019 5V crimp metal roof. Located just second in from the end of the street, enjoy privacy due to location and Ocean views from the open-air porch. This half duplex offers two-bedrooms, one-bathroom, just under 800 square inside on a 3,551 sf lot. Inside, find the open concept living area that leads right to the kitchen with peninsula and bar counter seating. Both bedrooms are spacious and offer plenty of natural light. Gracious carport parking on first level for multiple vehicles and storage, or enclose this area for further protection from the elements. Freshly graveled yard allows for parking for all trailers and toys, or install a fence for separation from the front half if desired. Assumable flood insurance available. Full duplex offered for sale (MLS 610715) and front half (1299 73rd Street) also offered for sale (MLS 610713). Please do not walk the property, tenant occupied.

$569,000
Key Colony
Key Colony Beach   - MM: 53.50
2 Bed, 2 Baths, 750 SqFt Days Listed: 72
Half Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

A piece of paradise awaits! This cozy home is located in the highly sought-after Key Colony Beach, nestled in the heart of the Florida Keys. Featuring two bedrooms, one bathroom, tile floors, granite countertops, and impact windows and doors, this property is the perfect retreat. With a lush backyard ideal for relaxation or entertaining, it offers access to the exclusive Cabana Club and all the amenities the island has to offer. Additionally, it has a solid rental history, making it a great investment opportunity.

$700,000
Key Largo
Harris Ocean Park   - MM: 93.00
4 Bed, 4 Baths, 1,541 SqFt Days Listed: 106
-6.67% ($50,000) 1 Price Change : Last Change 67 Days Ago
Duplex - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Attention Investors! Or savvy homeowners can live on one side and rent the other out. This is a concrete duplex with a metal roof in 2018. Fully Fenced back yards. Parking for 4 cars. Walking distance to Harry Harris Park with a beach, boat ramp, and playground. This Tavernier location provides convenient access to the Key Largo and Islamorada workforce housing. This property will pay for itself and will appreciate in market value.

$716,000
Plantation Key
Plantation By The Sea   - MM: 87.50
2 Bed, 2 Baths, 988 SqFt Days Listed: 32
Condo - Active - Waterfront Yes
Side of Island: Ocean - Dockage: None

Welcome to this updated & turn-key 2 bedroom, 1.5 bathroom end unit, with unobstructed Ocean views, at Plantation By The Sea. Offering a spacious and well-designed floor plan, this condo effortlessly blends the kitchen, dining, and living areas, creating a perfect flow for entertaining or relaxing. This unit has two porches, one off the living room and another off the main bedroom. You can savor the ocean breeze and enjoy the oceanfront pool, which is directly downstairs from this unit.

$749,000
Key Colony
Key Colony Beach Botel   - MM: 53.50
2 Bed, 2 Baths, 902 SqFt Days Listed: 148
-6.26% ($50,000) 2 Price Changes : Last Change 2 Days Ago
Half Duplex - Active - Waterfront Yes
Side of Island: Ocean - Dockage: 32ft.Concrete

Own your very own piece of Paradise! Stilted half duplex on boating canal in Key Colony Beach with dockage. Easy access to the Atlantic Ocean. Two bedrooms, two baths, 600 sq ft enclosed downstairs storage. Upstairs porch with westerly view overlooks the water. New metal roof (2018), HVAC unit, water heater, washer, dryer, and fridge, Lifetime dock (2015). Short walk to Sparkys and The Island Fish Co.Currently a rental with Cabana Club membership.

$759,000
Marathon
Reimanns Subdivision   - MM: 51.00
4 Bed, 4 Baths, 1,203 SqFt Days Listed: 72
-15.57% ($140,000) 2 Price Changes : Last Change 9 Days Ago
Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Seller will consider all offers! Dont miss this opportunity with a variety of potential uses. Currently this duplex has two units that are rented which includes two transferrable building rights. Opt. 1: Use as-is. Opt. 2: Transition to a single family and sell off the 2nd building right for approx. value $200k net. Opt 3: Apply to the city for two affordable building rights and deed restrict the duplex for affordable housing then move off both transferrable building rights (approx. value $400k net). Opt. 4: Could be a combination of the above. So many options here to discuss so lets see what works best for you!

$799,000
Marathon
Puerta Del Sol   - MM: 50.50
4 Bed, 4 Baths, 2,074 SqFt Days Listed: 67
Multi-Units - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Triplex in the heart of Marathon. Configured as 3/1, 1/1, and studio apartment. Great income property fully occupied. On 10,000 sf lot with large storage in back. Great quiet neighborhood close to the ocean.

$799,000
Key Colony
Key Colony Beach 1st Addn Amd   - MM: 53.50
3 Bed, 3 Baths, 1,599 SqFt Days Listed: 149
Half Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Paradise awaits! Welcome to your 3 bedroom 2 bath dream home in Key Colony Beach. This stunning half duplex is perfectly situated on an oversized corner lot, offering both space and convenience. Located within walking distance to the Sunset Park, Cabana Club, restaurants, post office, golf, tennis and pickle ball courts. Security is always a must. We have our very own police department. This property promises an unbeatable Keys Lifestyle. As you pull up to the property, youll immediately notice the ample parking space for multiple vehicles, making it ideal for family and guests. Additionally, the 1- car garage provides excellent storage space and protection for your vehicle. Step inside, and youll be greeted by the beauty of vaulted ceilings that lend an airy and spacious feel to the entire home. The open concept design seamlessly connects the large kitchen, dining room, and living room, creating an inviting and harmonious living space. Nice private fenced in patio to relax, have your morning coffee, evening cocktails or great for a BBQ. This incredible property is offered turnkey and move-in ready, or as an investment vacation rental. Boat Owners - You have an opportunity to acquire a dry storage rack at The Boat House. The rack accommodates a 10 Beam and 32 Length boat. For an additional cost please inquire for more details. Dont miss out on this opportunity to own a slice of paradise in Key Colony Beach. Make this stunning half duplex your forever home or a perfect vacation getaway. Call today for a showing. Motivated sellers.

$825,000
Key Colony
Key Colony Beach   - MM: 53.50
2 Bed, 2 Baths, 1,115 SqFt Days Listed: 126
-2.94% ($25,000) 1 Price Change : Last Change 55 Days Ago
Half Duplex - Active - Waterfront Yes
Side of Island: Ocean - Dockage: Boat Lift30ft.Concre

Charming Waterfront Property in Key Colony Beach a 2-bedroom, 2-bath half duplex that perfectly combines comfort, style, and a prime location. This beautiful waterfront property offers an ideal tropical retreat or a lucrative investment opportunity. As you step inside, youll be greeted by a spacious interior featuring a sunroom that fills the space with natural light, creating a warm and inviting atmosphere. The modern kitchen boasts granite countertops and stainless steel appliances while having a view of your backyard. The open floor plan seamlessly connects the living and dining areas, making it perfect for entertaining guests or relaxing after a day on the water. The home features low-maintenance vinyl flooring throughout, ensuring both durability and a sleek aesthetic. Outside, youll find 30 feet of dockage equipped with a boat lift, providing direct access to the water and just a quick 5-minute boat ride to the open ocean. Whether youre a fishing enthusiast or enjoy cruising the turquoise waters, this property is a boaters dream. Additional amenities include a covered carport, within walking distance to the Cabana Club (membership required), playgrounds, restaurants, Par 3 golf course and can fuel your boat and get bait at the Key Colony Beach Marina. Driving distance to Marathon Airport, grocery stores and other local amenities. The propertys prior history as a successful vacation rental adds potential for it to become an income-producing investment. Dont miss out on this rare opportunity to own a slice of paradise in Key Colony Beach. Schedule your private tour today and experience waterfront living at its finest!

$855,000
Plantation Key
Plantation Tropical Park   - MM: 91.00
3 Bed, 3 Baths, 2,088 SqFt Days Listed: 94
Duplex - Active - Waterfront No
Side of Island: Bay/Gulf - Dockage: None

Multi family, LEGAL duplex for sale in residential, Islamorada neighborhood. The first unit is a cozy 1 bedroom, 1 bath with a loft for storage, high ceilings and a private fenced yard.The second unit is a 2 bedroom, 1 bath. Unit 2 has cathedral tongue-in groove wood ceilings and stone wall details. It contains contemporary LED lighting and skylights to let natural light flow in. It has its own private fenced yard and a designated laundry room.Both units have been updated and received a new metal roof in 2019.Each unit has its own electric meter, making separate rentals a breeze. Unit 1 has had a stable, reliable tenant for 20 years. Unit 2 is currently vacant.This is a lucrative, stable long-term investment with multiple configurations: 1.Rent both units for maximum income.2.Owner can occupy one side while renting out the other. 3.Reconfigure the property as a single-family home.Super location! Close to shopping, schools, hospital, restaurants and boating.

$859,000
Key Colony
Key Colony Beach   - MM: 53.50
2 Bed, 2 Baths, 900 SqFt Days Listed: 33
Half Duplex - Active - Waterfront Yes
Side of Island: Ocean - Dockage: 30ft.Concrete

Half Duplex in the beautiful community of Key Colony Beach. Remodeled with top quality finishes. Entry doors are Anderson impact, windows are Dbl. Pane PGT, sliding glass doors are Low-E Anderson. All stainless appliances, granite counters, 7 insulation in ceiling throughout, tile flooring, Key Colony Beach offers convenience to its own post office, restaurants, marina, shopping, par 3 golf course, pickleball and tennis courts, basketball, bocce ball, horseshoes. Marathon Airport is only 10 minutes away, Key West International Airport is a 1-hour drive.

$895,000
Big Pine Key
Pine Channel Estates   - MM: 29.50
4 Bed, 4 Baths, 2,232 SqFt Days Listed: 442
-25.42% ($305,000) 3 Price Changes : Last Change 2 Days Ago
Duplex - Active - Waterfront Yes
Side of Island: Bay/Gulf - Dockage: 75ft.Concrete

Income producing property, screened porches, concrete construction, nice sq. footage, fantastic boating, 75 foot concrete seawall, Interior has been updated, tile throughout.Public boat ramp around the corner, minutes to the grocery store and the bus stop for the kids is at the end of the street. This is a family neighborhood with lots of great people. Duplex 2/2 up and 2/2 down

$925,000
Key West
New Town Unrecord   - MM: 3.00
2 Bed, 2 Baths, 1,464 SqFt Days Listed: 327
Duplex - Active - Waterfront No
Side of Island: Median - Dockage: None

Great duplex on upper Eagle Avenue. Currently, long-term renter in back cottage. Main house is a complete renovation project. This property can also be purchased with the vacant lot next door (3705 Eagle). See MLS #608559. Seller is an active agent.

$980,000
Key West
Moffats Subdivision   - MM: 2.00
2 Bed, 2 Baths, 960 SqFt Days Listed: 7
Duplex - Active - Waterfront No
Side of Island: Median - Dockage: None

This charming duplex has much to offer. A great location, two very nice one bedroom, one bath units, each with their own entry and outdoor space and its in move in condition. The first floor features a primary bedroom with Dade Pine walls and a large closet. The kitchen/living/dining area opens to the private exterior deck. Upstairs the 1/1 has high ceilings and natural light. It has a porch in the front and back and gated entry at the staircase. Shared parking can accommodate a small car. There is mature landscaping in the front adding to the privacy for the property. Each unit has their own washer/dryer. 1312 Catherine is located near White Street, conveniently located to many of Key Wests points of interest. The property is freshly painted and well maintained.

$995,000
Key West
New Town Unlisted   - MM: 2.00
4 Bed, 4 Baths, 1,224 SqFt Days Listed: 47
Duplex - Active - Waterfront No
Side of Island: Median - Dockage: None

Turn-Key, Fully Renovated Duplex in Prime Mid-Town Key West .This exceptional property offers flexibility for use as a vacation home, primary residence, or investment opportunity with a high ROI. Conveniently situated along the dedicated cross-town bike trail, this duplex is a proven income generator, with detailed financial records available. Currently, 2513A (front unit) has been rented units long-term at $4,200 per month, set to expire in October 2025. The back unit lease recently expired but it has historically rented long-term at $4,200. Currently has a 60-day kick-out clause lease in place with a -monthly rent of $3,850. The duplex is also eligible for use as an Airbnb, as both units hold Key Wests required 28-day rental licenses. The property features two mirrored units, each comprising two bedrooms and one bath (4 bedrooms and two baths in total). Renovated extensively in 2020/2021, upgrades include hurricane impact windows, new AC units, a newer roof with solar-powered attic fans, and updated plumbing with PVC replacing all cast iron drain lines, installed in 2021. This meticulously updated duplex offers both modern comfort and strategic investment potential.

$999,000
Key West
D T Sweenys Dia   - MM: 1.00
6 Bed, 6 Baths, 2,050 SqFt Days Listed: 269
-44.50% ($801,000) 7 Price Changes : Last Change 2 Days Ago
Multi-Units - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Located in Key Wests Casa Marina District on a quiet one-way street and just 2 blocks from the beach, 1304 Elizabeth Street presents a unique opportunity for those looking to take on a full-scale renovation project. This property is ready for a complete transformation and is perfect for developers, investors, or anyone eager to restore a historic Key West gem.Nestled in the desirable X flood zone and one of the most sought-after neighborhoods, the current layout includes two buildings with three separate units, all awaiting your vision to bring them back to life. The versatile HRO zoning offers flexibility for various investment goals, whether it is a full-time residence or a vacation retreat. Additionally, the neighboring property is also available for purchase, offering the option of an even larger compound. Schedule a viewing today and explore the possibilities to bring new life to this historic property and reimagine its potential..

$1,048,000
Marathon
Reimanns Subdivision   - MM: 51.00
4 Bed, 4 Baths, 1,536 SqFt Days Listed: 172
-4.55% ($50,000) 1 Price Change : Last Change 92 Days Ago
Duplex - Active - Waterfront No
Side of Island: Ocean - Dockage: None

Nothing compares to this full, non-waterfront duplex ideal for employee housing, first time home buyers, or investors looking to expand their real estate portfolio. Immense opportunity abounds here, no matter the situation. Live in one half while renting the other, house multiple employees for local workforce housing, or purchase each half individually as a first home. Stilted wood frame construction with stucco exterior, accordion shutters and 2019 5V crimp metal roof. Located just second in from the end of the street, enjoy privacy due to location and Ocean views from the open-air porches. This duplex features an expansive total lot size of 9,000 square feet, and just over 1,500 square feet of interior living with four bedrooms, and two bathrooms. Each half offers two-bedrooms, one-bathroom and mirrors the other in floorpan. Inside, find the open concept living area that leads right to the kitchen with peninsula and bar counter seating. Both bedrooms are spacious and offer plenty of natural light. Gracious carport parking on first level for multiple vehicles and storage, or enclose this area for further protection from the elements. Freshly graveled yard allows for parking for all trailers and toys, or install a fence for separation if desired. Assumable flood insurance available. A rare opportunity is now offered at this non-waterfront full duplex in Marathon! Each half is also offered for sale (front 1299 MLS 610713, back 1297 MLS 610714). Please do not walk the property.

$1,099,000
Key West
Key West Realty Cos Subdivisi   - MM: 3.00
4 Bed, 4 Baths, 2,174 SqFt Days Listed: 44
Duplex - Active - Waterfront No
Side of Island: Median - Dockage: None

This centrally located duplex presents an enticing investment opportunity with its convenient amenities and income potential. Offering privacy with a fenced yard on a 5,000 Sq. Ft. lot, the property boasts two 2-bedroom, 1-bathroom units with modern updates throughout, including individual laundry facilities. Whether you choose to live in one unit while renting out the other or lease both sides for maximum income, this duplex provides flexibility and a promising return on investment in a prime location close to various amenities.

$1,100,000
Marathon
Sombrero Anglers Club N   - MM: 49.50
2 Bed, 2 Baths, 1,028 SqFt Days Listed: 19
Half Duplex - Contingent - Waterfront Yes
Side of Island: Ocean - Dockage: 28ft.

Your dream island home awaits in the highly sought-after Sombrero neighborhood, just a short walk from the beautiful Sombrero Beach and a quick boat ride to both the Atlantic Ocean and Gulf of Mexico. This beautifully updated half duplex is ideal for full-time living, a second home, or a vacation rental. Imagine enjoying serene canal views from your pool or the second-floor balcony. This elevated residence features a contemporary kitchen adorned with quartz countertops, a pantry, and shaker-style cabinets, all designed for effortless entertaining thanks to its open floor plan. The primary bedroom offers stunning canal views, an updated bathroom, and a spacious walk-in closet with access to a walkable, climate controlled attic for additional storage. Downstairs, youll find an enclosed room that provides ample storage, while the screened enclosure creates a perfect spot for gatherings. The generous yard includes a shed and plenty of space for kayaks, paddleboards, and other outdoor toys, making it an outdoor enthusiasts paradise. With parking available for multiple vehicles, theres also room for an RV or boat trailer. This home has been upgraded with a durable metal roof and hurricane impact windows and doors, ensuring safety and longevity. The expansive lot offers significant privacy, making this an exceptional opportunity to own a stunning home in paradise. Dont let this chance slip away!

The information being provided by the Florida Keys MLS is exclusively for consumers' personal, non-commercial use, and it may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed accurate by the MLS. Data last updated on 12-27-2024.
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