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!
Current real estate data for Single Family in Key Biscayne as of Oct 31, 2026
41
Single Family Listed
146
Avg DOM
2,613
Avg $ / SqFt
$14,295,512
Avg List Price
Listing Provided Courtesy of Douglas Elliman at 305-677-5000
Property Details
Price:
$8,500,000
MLS #:
A12021891
Status:
Active
Beds:
6
Baths:
6.5
Type:
Single Family
Subtype:
Single Family Residence
Subdivision:
TROPICAL ISLE HOMES SUB 4
Neighborhood:
2420
Listed Date:
May 21, 2026
Finished Sq Ft:
4,190
Total Sq Ft:
5,648
Lot Size:
388,380,960 sqft / 0.20 acres (approx)
Year Built:
2026
Schools
Elementary School:
Key Biscayne K-8
Middle School:
Ponce De Leon
High School:
Coral Gables
Interior
Appliances
Dishwasher, Dryer, Electric Range, Microwave, Refrigerator, Trash Compactor, Washer
Bathrooms
6 Full Bathrooms, 1 Half Bathroom
Cooling
Central Air
Flooring
Wood
Heating
Central
Interior Features
Built-in Features, Closet Cabinetry, Entrance Foyer, Pantry, Walk-In Closet(s)
Levels
Two
Exterior
Association Amenities
Beach Club Available
Construction Materials
Block
Covered Spaces
2
Direction Faces
East
Exterior Features
Balcony, Built-in Barbecue
Fencing
Fenced
Garage Spaces
2
Lot Features
Fruit Tree(s)
New Construction YN
1
Parking Features
Covered
Patio And Porch Features
Patio
Roof
Concrete
View
Garden
Financial
Tax Year
2025
Taxes
$12,000
Map
Contact Us
Mortgage Calculator
Community
- Address238 Buttonwood Drive Key Biscayne FL
- SubdivisionTROPICAL ISLE HOMES SUB 4
- CityKey Biscayne
- CountyMiami-Dade
- Zip Code33149
Property Summary
- Located in the TROPICAL ISLE HOMES SUB 4 subdivision, 238 Buttonwood Drive Key Biscayne FL is a Single Family for sale in Key Biscayne, FL, 33149. It is listed for $8,500,000 and features 6 beds, 7 baths, and has approximately 4,190 square feet of living space, and was originally constructed in 2026. The current price per square foot is $2,029. The average price per square foot for Single Family listings in Key Biscayne is $2,613. The average listing price for Single Family in Key Biscayne is $14,295,512. To schedule a showing of MLS#a12021891 at 238 Buttonwood Drive in Key Biscayne, FL, contact your Trust House Realty agent at 9543362003.
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