31 Island Dr

Key Biscayne, FL 33149

$9,800,000

$1,682/ft²

6Beds

6.5Baths

5,826Sq ft

2004Year built

Single-family homeType

About this home

Exceptional Estate in Key Biscayne. Discover an extraordinary opportunity to own a stunning modern residence on over 19,000 sq ft lot—an exceptional find in the heart of Key Biscayne. This expansive property offers a generous backyard, perfect for outdoor living, entertaining, or creating a private oasis where kids can play freely. The home features 6 bedrooms, 6.5 bathrooms, a dedicated office, and high ceilings that enhance the bright, open ambiance. Designed with a sleek, modern aesthetic, the interior boasts luxurious finishes and thoughtful amenities, including a wine cellar, pool, and a 2-car garage. Located on a quiet street, this residence blends privacy with convenience. Experience the best of island living with unparalleled space and style.

Property details

Listing

MLS #: A11782945
Status: For sale
Listed on: Apr 12, 2025
Days on market: 485 days
Listing data updated: Jul 28, 2026

Interior

Beds: 6
Baths: 6.5
Living area: 5,826 ft²
Price per ft²: $1,682/ft²

Building & community

Type: Single-family home
Year built: 2004
County: Miami-Dade

Lot & exterior

Lot size: 19,236 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): $49,554
Property taxes (est.): $8,983
Home insurance (est.): $600
Flood insurance (est.): —

Estimated total$59,137*/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?