238 Buttonwood Drive, Key Biscayne, FL 33149

$8,500,000 — Active

Property Features

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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!

Property Details

  • Listing ID: A12021891
  • Status: Active
  • Listing Date: 2026-05-21
  • Property Type: Single Family Residence
  • Subdivision: TROPICAL ISLE HOMES SUB 4
  • County: Miami-Dade
  • MLS Area: 2420
  • Bedrooms: 6
  • Full Bathrooms: 6
  • Half Bathrooms: 1
  • Living Area Sq Ft: 4,190
  • Year Built: 2026

Financial

  • List Price: $8,500,000
  • HOA Fee: None
  • Taxes: $12,000/yr

Features & Amenities

  • View: Garden
  • Pets Allowed: Yes, No Restrictions
  • Parking: Covered
  • Cooling: Central Air
  • Heating: Central
  • Flooring: Wood
  • Construction: Block
  • Roof: Concrete
  • Interior Features: Built-in Features, Entrance Foyer, Pantry, Walk-In Closet(s), Closet Cabinetry
  • Exterior Features: Built-in Barbecue, Balcony
  • Community Amenities: Beach Club Available

Courtesy of Douglas Elliman
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© 2026 Starfish Real Estate. Listings updated Nov 5, 2026 5:00 am. Listing data is derived from the Broker Reciprocity Program of the Realtor Association of Indian River County (RAIRC) and BeachsMLS. Properties listed by brokers other than Starfish Real Estate are identified with the applicable MLS logo and include the listing broker's name. Not all properties available through either MLS may be displayed. All MLS data is the copyrighted property of the respective MLS and its participants. Data is deemed reliable but is not guaranteed accurate and should be independently verified prior to entering into any transaction.