Key Biscayne Real Estate Search

Key Biscayne Properties between $5,000,000 and $10,000,000 for Sale

Our website features the best real estate search for between $5,000,000 and $10,000,000 properties available in Key Biscayne 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. 

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Newest Key Biscayne Properties between $5,000,000 and $10,000,000 for Sale

$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

$6,900,000
4 Beds 5 Baths A12027392 MLS Ocean Club BLDG.
One of the rarest opportunities within Ocean Club Key Biscayne, this expansive renovated two-level 4,200 SF lanai residence combines the privacy and scale of a single-family home with the effortless luxury, security, and world-class amenities of a premier oceanfront condominium, all within a 52-acre private beachfront enclave. A private elevator opens directly into a bright and sophisticated first floor designed for both grand entertaining and refined everyday living. Multiple living areas, formal and informal dining spaces, an eat-in chef’s kitchen, powder room, and a first-floor guest suite are thoughtfully arranged to create a seamless flow throughout. Four oversized terraces blur the line between indoor and outdoor living, highlighted by a spectacular garden terrace that lives like a private backyard, offering direct access to the pool deck and beach beyond. The upper level is anchored by an expansive primary suite occupying its own private wing, creating a true retreat. Two additional bedroom suites, a generous family room, and a dedicated laundry room complete the second floor. Offered with private elevator entry and three parking spaces, residents enjoy access to Ocean Club’s unrivaled collection of amenities, including beachfront service, valet, fine dining, spa and wellness facilities, fitness center, tennis and padel courts, children's playground, and 24-hour gated security. Special assessment has been paid in full.

785 Crandon Blvd Unit #205/305, 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

$5,478,000
4 Beds 4 Baths A12010108 MLS Biscayne Key Estates BLDG.
A truly exceptional Miami Modern Tropical residence set on a prime 8,010 SF corner lot, offering 3,549 SF of beautifully curated living space with 4 bedrooms and 3.5 bathrooms. Designed by architect Hervin Romney, a founding member of Arquitectonica, the home reflects a distinctive architectural vision inspired by the organic principles of Frank Lloyd Wright and the expressive forms of Antoni Gaudí, where art, design, and nature seamlessly converge. This residence captivates with its abundance of natural light, soaring high ceilings, fluid open spaces, and harmonious lines that create a sense of warmth, sophistication, and effortless flow throughout the main living areas. The beautifully remodeled kitchen and bar are a true centerpiece, featuring high-end appliances, premium finishes, refined craftsmanship, and a design that balances functionality with striking aesthetics. Step outside into your own private tropical retreat, where lush landscaping, graceful curved terraces, and a stunning swimming pool create an atmosphere of tranquility and escape. This outdoor sanctuary is perfect for both relaxation and entertaining. As an added privilege, the property includes membership to the Key Biscayne Beach Club, offering exclusive access to one of Miami’s most coveted coastal lifestyles. Key Biscayne is renowned for its pristine beaches, charming restaurants, and vibrant yet relaxed atmosphere—delivering a true island lifestyle just minutes from the city.

690 Warren Ln, Key Biscayne

$5,495,000
5 Beds 6 Baths A11987710 MLS Tropical Isle Homes Sub 4 BLDG.
Elevated, 3,888 sf Adjusted Area. Sophisticated Mediterranean beach house, elevated and privately set, offering 5 bedrooms, 5 bathrooms, and an additional powder room, surrounded by a lush, mature backyard garden. A double-height cathedral ceiling in the great room fills the home with natural light and opens to a covered terrace overlooking the pool patio, creating seamless indoor-outdoor living. The great room flows into a warm family room and gourmet kitchen, well suited for everyday living and entertaining, and every bedroom is en suite. The serene primary suite includes a sitting area ideal for relaxing or reading. A spacious den with abundant windows and its own full bath offers flexibility as a home office, guest suite, studio, or cabana, with direct access to the patio and pool. Outdoors, enjoy a private setting with an upper veranda shaded by a living canopy of fig vines, an inviting space for dining and lounging, plus an outdoor gourmet area with a wood-fired pizza oven and tools. Additional highlights include solar panels with backup batteries for energy savings and reliability. Two batteries plus potential for expansion, two garages, and a pool with refreshed tile and grout for a crisp, updated finish. Walking distance to the beach, parks, dining, shopping, and everyday conveniences, with convenient access to Miami. Not Included in the sale: all display shelving, two bronze candle holders, and the chandelier hanging above the stairs.

140 Hampton Ln, Key Biscayne

$6,900,000
2 Beds 4 Baths A11973615 MLS Grand Bay BLDG.
Commanding breathtaking Atlantic vistas from its privileged eighth-floor setting at Grand Bay Tower, this residence is a rare offering on Key Biscayne. Enjoying an unusually private setting with unobstructed ocean views and minimal visibility from neighboring residences, the home offers a level of seclusion seldom found in oceanfront condominium living. Originally a three-bedroom, five-and-a-half-bath home, it has been masterfully reimagined into a grand two-bedroom, three-and-a-half-bath layout, enhancing scale and flow for refined entertaining and effortless daily living. Spanning approximately 3,950 square feet, the living and dining areas, a cozy family room, and a bright kitchen with breakfast area are complemented by three terraces totaling approximately 595 square feet, seamlessly integrated to capture sweeping Atlantic views from every room. Custom woodwork by renowned designer Juan Montoya enriches the interiors, while the serene primary suite offers a secluded sitting room, bespoke closets, and a spa-inspired bath, creating a private sanctuary within this singular home. The sale includes a private guest quarters—an increasingly rare and coveted amenity at Grand Bay—as well as two storage units. Combining exceptional scale, refined finishes, remarkable privacy, unobstructed Atlantic views, and desirable ancillary spaces, this residence represents a unique opportunity within one of Key Biscayne’s most prestigious oceanfront buildings.

430 Grand Bay Dr Unit #801, Key Biscayne

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