238 Buttonwood Dr, Key Biscayne, FL 33149 — MLS photo

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238 Buttonwood Dr, Key Biscayne, FL 33149

Active · SingleFamilyResidence

$8,500,000

238 Buttonwood Dr, Key Biscayne, FL 33149

Beds
6
Baths
7
Living area
4,190 sq ft
$ / sq ft
$2,029/sq ft
Year built
2026
Lot size
8,916 sq ft
HOA fee
—
Annual tax
$12,000

About this property

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 location

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238 Buttonwood Dr, Key Biscayne, FL 33149

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Facts & features

Interior

Bedrooms
6
Bathrooms
7
Living area
4,190 sq ft
Flooring
Hardwood, Wood
Appliances
Dryer, Dishwasher, Electric Range, Microwave, Refrigerator, Trash Compactor, Wine Cooler, Washer
Cooling
Central Air
Heating
Central
Interior features
Built In Features, Bedroom On Main Level, Bathtub, Closet Cabinetry, Entrance Foyer, Eat In Kitchen, Family Dining Room, First Floor Entry, Pantry, Separate Shower, Walk In Closets

Exterior & Structure

Property type
SingleFamilyResidence
Year built
2026
Lot size
8,916 sq ft
Architectural style
Two Story
Roof
Concrete
Construction
Block
Exterior features
Balcony, Fence, Fruit Trees, Security High Impact Doors, Outdoor Grill, Patio
Pool
Heated, In Ground, Pool
View
Garden

Parking

Garage spaces
2
Covered spaces
2
Parking features
Covered

HOA, Community & Financials

Pets allowed
No, Yes
Annual tax
$12,000
Subdivision
TROPICAL ISLE HOMES SUB 4
County
Miami-Dade
Days on market
123
MLS listing ID
A12021891
Listing status
Active

Investment intelligence

Yield & ROI calculator

Pre-filled from this listing's price, HOA and tax record. Adjust anything to see returns update instantly.

Estimated monthly cash flow

-$18,427

Cap rate
3.1%
Net yield
3.1%
Cash-on-cash return
-9.3%
Gross yield
4.4%
Mortgage payment
$40,294/mo
Down payment
$2,125,000
Loan amount
$6,375,000
Annual NOI
$262,404

Estimates only — includes 5% maintenance reserve and ~3% closing costs in cash invested. Verify taxes, HOA and insurance before making an offer.