New & Preconstruction Real Estate For Sale in Key Biscayne, FL

Discreetly set in the heart of key biscayne — one of miami’s most coveted island communities — this elegant modern two-story residence offers 5, 156 sf of total space on a lush 9, 300 sf lot with 6 bedrooms, 5.5 bathrooms, and a private office, perfectly balancing refined design with the relaxed island lifestyle. A travertine staircase entry and wrap-around porch with modern glass railings set a sophisticated tone, leading inside to soaring ceilings, herringbone oak floors by listone giordano, floor-to-ceiling sliding doors, and lutron lighting. The open-concept living, dining, and family areas flow seamlessly to the outdoors. The chef’s kitchen showcases a striking fluted marble island with curved-edge countertops, floor-to-ceiling cabinetry by design it, and a full wolf and sub-zero appliance suite. The primary suite features a private terrace, dual custom walk-in closets, a dry sauna, and a show-stopping bath with aquamarine quartzite sourced from arca, dual waterworks vanities, and a frameless glass shower. Outside, a covered terrace with fluted wood-paneled ceiling, summer kitchen with built-in grill and pizza oven, and a heated saltwater pool with marble deck and baja ledge create the ultimate island retreat. Professionally designed landscaping and enchanting exterior uplighting illuminate the lush gardens, creating picturesque views through the home’s expansive glass walls, particularly after sunset. Integrated sound and four ac units complete this exceptional offering.

New construction, this extraordinary custom cape dutch residence is a masterwork of timeless design, brought to life by duncan and heuser design and development, with interiors curated by james duncan. Every detail, from the graceful gabled facade to the refined finishes within, reflects a rare devotion to craftsmanship and enduring elegance. Offering six generously proportioned bedrooms and six and a half beautifully appointed bathrooms, this home balances gracious scale with warm, livable comfort. Soaring ceilings, thoughtfully placed windows, and an effortless flow between rooms create a sense of light and openness throughout, while curated materials and bespoke millwork lend a distinctly luxurious character to every space. This is more than a house; it is a legacy residence, designed to be lived in beautifully for generations. A truly rare offering for the discerning buyer seeking timeless architecture, exceptional interiors, and uncompromising quality throughout.

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

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!

Nestled in one of miami’s most exclusive and sought-after enclaves, this stunning new construction epitomizes luxury living in key biscayne. Designed with sophistication and elegance, this home harmoniously blends contemporary style with the relaxed charm of island life. Expansive open-concept interiors with soaring 11-ft ceilings enhanced by floor-to-ceiling windows flood the home with natural light. Features include- a gourmet kitchen with thermador appliances, imported spanish tile and engineered wooden flooring, meticulously crafted custom cabinetry, refined carpentry & more. Outdoors, a large pool is surrounded by lush landscaping, several lounge areas, and a fully equipped summer kitchen—perfect for both entertaining and serene relaxation. Exp. Delivery q4 25' / start of q1 26'.