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6+ Bathroom Homes for Sale in Key Biscayne, FL

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Welcome to your dedicated resource for 6+ bathroom homes for sale in Key Biscayne, FL. This page is your live portal for listings that match the exact homes for sale you demand, filtering out irrelevant properties to save you time. As a local Key Biscayne, FL agent, Marc Plotkin specializes in the unique market dynamics of this area, offering insights into amenities, home values, and investment potential. Start exploring the 6+ bathroom properties currently available below, or contact a local agent to discuss the details that matters most to your search.

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All 6+ Bathroom Homes for Sale in Key Biscayne, FL

$8,250,000
6 Beds ⋅ 9 Baths ⋅ A12040744 MLS ⋅ Tropical Isle Homes Sub 4 BLDG.
There are homes that are beautiful, and then there are homes that leave a lasting impression. This extraordinary brand-new 2026 designed by Kubik is one of a kind. With breathtaking architecture, exceptional attention to detail, and a floor plan designed for the way people truly live today, this is a home that immediately captivates from the moment you enter. Filled with natural light and generous open spaces, every room feels inviting, comfortable, and connected to the beauty that surrounds it. The residence offers 6 bedrooms, 8 full bathrooms, and 1 powder room, along with a spectacular rooftop terrace and an additional flexible space that could become a private gym, office, yoga studio, art room, or peaceful retreat. A dramatic spiral staircase serves as a beautiful architectural centerpiece, adding character and elegance to the home's design. The primary suite is particularly special...surrounded by lush gardens, it feels worlds away from everyday life. The spa-like bathroom further enhances the feeling of escaping to your own boutique resort. Created with family gatherings and entertaining in mind, the outdoor spaces are every bit as impressive as the interiors. The pool, spacious terraces, and barbecue area provide the perfect backdrop. Offered completely turnkey and finished with impeccable taste including a 2 car-garage and elevator, rarely does a newly constructed residence combine such striking architecture with so much warmth and soul, creating a masterpiece.

165 Hampton Ln, Key Biscayne
$7,450,000
7 Beds ⋅ 9 Baths ⋅ A12034564 MLS ⋅ Tropical Isle Homes Sub 3 BLDG.
Discover this striking contemporary residence, perfectly positioned on an oversized 9,258 SF lot on Harbor Drive, one of Key Biscayne’s most elegant and prestigious streets. Built in 2020, this architectural masterpiece offers 6 bedrooms plus a private office, 7 full baths, and 2 powder rooms across 4,565 SF of beautifully designed living space. Filled with natural light, the home showcases expansive open living areas, impressive volume throughout, and a sleek custom kitchen featuring bespoke cabinetry and top-of-the-line finishes. An elevator provides seamless access to all three levels, culminating in a spectacular rooftop terrace with captivating island views and refreshing bay breezes…a unique advantage of being just moments from the water. Designed for effortless indoor-outdoor living, the exterior features a resort-style saltwater pool and spa, summer kitchen, cabana bath, and generous entertaining areas surrounded by lush tropical landscaping. Additional highlights include , EV charger, and ample driveway parking. Combining exceptional design, comfort, and functionality, this residence embodies the very best of island living in one of Key Biscayne’s most distinguished locations. Just minutes from Miami, Key Biscayne is a hidden island paradise where pristine beaches, world-class outdoor recreation, and a relaxed yet sophisticated lifestyle come together in a way that few places can match.

425 Harbor Dr, Key Biscayne
$18,500,000
5 Beds ⋅ 6 Baths ⋅ A12027629 MLS ⋅ Ocean Club BLDG.
Magnificent ocean and bay views set the stage for this truly one-of-a-kind two-story penthouse, a spectacular house in the sky. Located in Ocean Tower One at the Ocean Club in Key Biscayne, this extensively renovated and redesigned residence offers approximately 4,566 SF of fully functional interior living space across two levels, 5 bedrooms, 5 full baths, and 1 half bath. Thoughtfully redesigned with exceptional attention to detail, the residence features a beautifully renovated kitchen and baths, bespoke built-ins, Italian marble flooring, refined luxury finishes throughout, and new hurricane shutters. Expansive living areas create the feel of a private home with the ease of condominium living. A spectacular private rooftop terrace of just under 2,000 SF, separate from the interior living area, offers endless possibilities for entertaining, lounging, or the potential for a jacuzzi while enjoying breathtaking water views. Beachfront access and world-class Ocean Club amenities complete this exceptional offering. Select Artefacto furnishings and accessories available for negotiation.

799 Crandon Blvd Unit #PH-8, Key Biscayne
$9,200,000
5 Beds ⋅ 6 Baths ⋅ A12021022 MLS ⋅ Biscayne Key Estates BLDG.
A modern Key Biscayne home elevated by $1M+ in owner upgrades. This 5BD/5.5BA, two-story residence spans 4,416 SF and lives like new—built in 2017 and thoughtfully enhanced throughout. The first floor flows around stunning pool views, anchored by an open living, dining, and Miele kitchen. Clean lines and warm woods balance bold with inviting. A dedicated gym, office, laundry, and media room with projector & hidden screen complete the interior. Smart-home tech controls sound (hidden speakers and projector), lights, and alarm. Full-perimeter camera system and rooftop solar with battery backup add security and efficiency. Move-in ready contemporary living at its finest on the island on a quiet pedestrian-free street.

625 Curtiswood Dr, Key Biscayne
$17,900,000
5 Beds ⋅ 6 Baths ⋅ A12027002 MLS ⋅ Oceana Key Biscayne BLDG.
Lower Penthouse 2N at Oceana Key Biscayne presents a rare opportunity to own a meticulously curated, fully remodeled sky residence in one of South Florida’s most exclusive boutique oceanfront communities. Spanning nearly 6,000 SF of total living area including interior + expansive terraces, this exceptional flowthrough home showcases breathtaking ocean, beach, bay, skyline, and Miami Beach views while capturing both spectacular sunrises and sunsets. Thoughtfully reimagined with exceptional attention to detail, the residence blends sophisticated design with effortless functionality. Soaring 11-ft ceilings, rich custom millwork and designer wall coverings, integrated architectural lighting, built-in audio, Crestron smart home automation, custom built-ins, and bespoke finishes throughout create an atmosphere of understated luxury. Designed for both intimate living and grand entertaining, the home features a private elevator foyer, hidden custom bar, elegant formal and informal living spaces, 4 spacious en-suite bedrooms, 5.5 bathrooms, laundry/staff quarters, & an exceptional sense of privacy throughout. Residents enjoy Oceana’s unmatched white-glove service and world-class amenities, including over 500 feet of pristine beachfront, resort-style pools, fitness center and spa, resident-favorite restaurant, tennis court, beach volleyball, and beautifully curated grounds. A truly extraordinary offering for the most discerning buyer. Includes 4 assigned parking spaces & 1 storage.

350 Ocean Dr Unit #LPH2N, Key Biscayne
$7,490,000
5 Beds ⋅ 7 Baths ⋅ A12025834 MLS ⋅ Tropical Isle Homes Sub BLDG.
BRAND-NEW CONSTRUCTION HOME IN ONE OF KEY BISCAYNE’S MOST PRESTIGIOUS AND PRIVATE ENCLAVES SURROUNDED BY LUSH TROPICAL LANDSCAPING! This exceptional Contemporary Residence offers 5 Bedrooms with a service area, 5.5 Bathrooms + a Cabana Bath. 3,768 Interior SF on a Lush Corner Lot on a quiet street. Soaring double-height ceilings & expansive impact glass windows that fill the interiors with abundant Natural Light. The Home offers Enhanced Privacy and an Impeccable Floor Plan designed for modern living & entertaining. Gourmet eat-in Kitchen with Custom Cabinetry & top-of-the-line Miele Appliances. Spacious Outdoor Spaces include a Private Rooftop Terrace with a summer kitchen, newly designed gardens, beautifully landscaped grounds, and a Resort-style Pool enveloped by Lush Greenery. Perfectly located just moments from the Beach, Parks, Restaurants & Key Biscayne’s top-rated schools, this residence combines timeless design, exclusivity & an unparalleled island lifestyle

571 Glenridge Rd, Key Biscayne
$8,500,000
6 Beds ⋅ 7 Baths ⋅ A12021891 MLS ⋅ Tropical Isle Homes Sub 4 BLDG.
A unique architectural masterpiece in the heart of Key Biscayne, this brand-new contemporary residence by Praxis Architecture blends modern tropical luxury with exceptional craftsmanship and bespoke European finishes. Set on an oversized 9,000 SF lot, the residence offers 6 bedrooms, 6 full bathrooms, 1 half bath, and over 4,190 SF of curated living space designed around natural light, privacy, and seamless indoor-outdoor living. Imported Spanish porcelain and ceramic surfaces, Italian-engineered wood flooring, Portuguese interior doors, and refined finishes sourced from the United Kingdom create a warm and sophisticated architectural atmosphere throughout. Custom millwork — including the kitchen, bar, wardrobes, and integrated TV units — was exclusively crafted by a French maison specializing in ultra-luxury bespoke cabinetry. The residence highly designed kitchen is equipped with Wolf, Sub-Zero, and Miele appliances, smart-home automation, and integrated security. Outdoor spaces feature a spectacular 36-foot swimming pool, expansive terraces, summer kitchen, lush private garden patio, and multiple entertaining areas designed for effortless resort-style living. Located moments from tennis courts and the Key Biscayne Yacht Club, beaches, marinas, top-rated schools, and the best of island living, this residence represents one of Key Biscayne’s most thoughtfully designed brand new-construction homes - Expected to be finished in July 2026. Easy to Show!

238 Buttonwood Dr, Key Biscayne
$237,000,000
5 Beds ⋅ 9 Baths ⋅ A12005335 MLS ⋅ Tropical Isle Homes Resub BLDG.
485 W Matheson Drive is one of America’s most iconic waterfront estates, representing a rare convergence of presidential history, cinematic legacy, and unparalleled waterfront scale. Set on approximately 2.38 acres with an extraordinary 862’ of direct Biscayne Bay frontage, the property captures sweeping, unobstructed views of the Miami skyline and open bay, offering a level of presence and exclusivity rarely found in South Florida. Once the “Winter White House” of, the estate also achieved cinematic fame as the Frank Lopez residence in Scarface, with original architectural elements still preserved, including the iconic glass elevator. Offers 5BR + gym (can be converted to 6th BR) 7+2BA, and approximately 13,500 SF (per owner) across three levels, featuring soaring 24’+ ceilings, marble floors, and walls of glass framing breathtaking bay views. Expansive living, dining, and kitchen areas open to large terraces, creating seamless indoor-outdoor living ideal for both everyday comfort and grand-scale entertaining. Resort-style grounds include a piano-shaped saltwater pool, cabana bath, lush tropical landscaping, and expansive lawn areas with artfully integrated lighting extending the estate’s experience well beyond sunset. A private marina, formerly a presidential helipad—features rare 3-phase power and dockage for yachts up to 200’, plus over 34,000 SF of submerged land, making this one of Miami’s most significant and irreplaceable waterfront holdings in the world.

485 W Matheson Dr, Key Biscayne
$19,950,000
6 Beds ⋅ 7 Baths ⋅ A12009875 MLS ⋅ Cape Fla Sub Sec 2 BLDG.
Embodying a true resort lifestyle, this rare Key Biscayne waterfront residence is defined by its extra-long, 134 ft water frontage and its elegant private ipe dock with direct canal-to-ocean access. The contemporary home, extensively rebuilt in 2018, is move-in ready, featuring 6 bedrooms, refined finishes, and tailored wood floors throughout. Outdoor living unfolds effortlessly with a sleek pool and spa and inviting spaces for intimate lounging, open-air dining and entertaining. Minutes from golf, tennis, padel, a protected state park and beaches, and within easy reach of Brickell, Coconut Grove, and Miami Airport. Nothing to add. Everything to enjoy. A MUST SEE.

120 Knollwood Dr, Key Biscayne
$6,395,000
5 Beds ⋅ 6 Baths ⋅ A12003163 MLS ⋅ Biscayne Key Estates BLDG.
This 5 bed, 5.5 bath residence, new construction and never lived in, offers over 4,000 sq ft of contemporary architecture, a chef’s kitchen, high ceilings, floor-to-ceiling impact glass, and an elevated backyard with pool, jacuzzi, and covered terrace.  The home features fully finished custom wood closets and sleek backlit LED mirrors in all bathrooms, adding both functionality and a refined design touch. An elevated backyard with pool, jacuzzi, and a covered terrace creates a seamless indoor-outdoor living experience. The home is fully pre-wired for a smart home system, including lighting, security, and automation. Custom window treatments and smart home features, curated with the project’s interior designer, can be included in the purchase, with final selections tailored to the buyer. Pre-selected design and automation options have already been defined by the interior designer and are available for review. Additional upgrades may be considered and negotiated at the time of closing. In a market where land alone in Key Biscayne trades in the multi-million-dollar range, owning a new home where the final details are left for the new owner  to choose, creating a personalized finish, is an exceptional opportunity at this price.

760 Woodcrest Rd, Key Biscayne
$6,950,000
5 Beds ⋅ 6 Baths ⋅ A11997896 MLS ⋅ Biscayne Key Estates BLDG.
Timeless colonial-style residence, also known as Villa Rosa, set on a rare 12,200 sqft lot in the heart of Key Biscayne. Designed by renowned architect Cesar Molina, this 5-bedroom home is located on a very quiet, low-traffic street, offering privacy within a well-established, family-friendly neighborhood. The home features double balconies, bright interiors, and a functional indoor-outdoor layout with expansive covered terraces. The kitchen includes an island, Sub-Zero refrigerator, wine cooler, double ovens, and two dishwashers. The primary suite offers a private terrace, oversized walk-in closet with safe, and dual bathrooms with sauna. The spacious backyard includes a pool and generous green space. Additional features include maid’s quarters and construction that meets hurricane code requirements. Ideally located near beaches, parks, and top-rated schools, this is a rare opportunity to own a well-designed home on one of Key Biscayne’s most desirable streets.

685 Harbor Ln, Key Biscayne
$5,100,000
4 Beds ⋅ 6 Baths ⋅ A11996672 MLS ⋅ Tidemark BLDG.
Exceptionally rare beachfront, standalone, townhouse in Key Colony, Key Biscayne. One of the few Miami-Dade properties with direct beach access. Spanning over 3,200 sqft, this 4-bed, 6-bath gem offers an unparalleled island lifestyle. Highlights include a private ground-floor cabana with new AC, impact windows & doors, a private elevator for easy access across its four levels, & Subzero paneled refrigerators. The rooftop terrace, complete with an outdoor wet bar, is perfect for enjoying sunset. With 6 parking spaces, including 2 in a private garage, providing added privacy & security. Located in the prestigious Key Colony, enjoy resort-style lifestyle with multiple pools, 12 tennis courts, a fitness center, & a spa. On-site amenities include a gourmet market, beach bar, & 24-hour security.

201 Crandon Blvd Unit #174, Key Biscayne
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