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For sale

238 Buttonwood Dr

Key Biscayne, FL 33149

$8,500,000

$2,029/ft²

6Beds
6.5Baths
4,190Sq ft
2026Year built
Single-family homeType

About this home

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

MLS #
A12021891
Status
For sale
Listed on
May 21, 2026
Days on market
80 days
Listing data updated
May 21, 2026

Interior

Beds
6
Baths
6.5
Living area
4,190 ft²
Price per ft²
$2,029/ft²

Building & community

Type
Single-family home
Year built
2026
County
Miami-Dade

Lot & exterior

Lot size
8,916 ft²

Days on market, price per ft² and the monthly HOA amount are calculated by this site from the MLS data shown; the association fee is normalized to a monthly figure.

True monthly cost

Mortgage (principal & interest)
$42,981
Property taxes (est.)
$7,792
Home insurance (est.)
$600
Flood insurance (est.)

Estimated total$51,373*/mo

* Some cost lines aren't available yet for this listing; the total shown is incomplete.

Based on 20% down, a 6.5% rate and a 30-year loan, plus this home's estimated Florida carrying costs. All figures are illustrative estimates — not quotes, not financial or insurance advice.

Sources: flood zone — FEMA National Flood Hazard Layer; mortgage, taxes and insurance figures — this site's own estimates; HOA / CDD — as reported for this listing.

What will this home really cost you?

Location

Mortgage calculator

$42,981/moEstimated principal & interest. Taxes, insurance, and HOA are not included. This is an estimate, not a quote or financial advice.

Equal Housing Opportunity

This listing is courtesy of Douglas Elliman.

Fernanda Moreno · 786-300-6334 · fernanda.moreno@elliman.com · 305-677-5000

Data deemed reliable, but is not guaranteed accurate by MIAMI REALTORS®.

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