Cool listings: A $20M mansion in Key Biscayne, Florida with its own private yacht dock

Georgie Mihaila
5 Min Read
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty

An oasis of sandy beaches, nature preserves and restaurants with stunning views, Key Biscayne offers all the allure of South Florida on a tiny sliver of land.

Just minutes from downtown Miami, Key Biscayne feels a world away from the city’s bustle and South Beach’s party vibe. The tiny island is home to 2 state parks, as well as quiet, palm-tree-fringed beaches, bike paths, and high-end accommodations (including the sprawling Ritz-Carlton on Key Biscayne).

The homes that line Key Biscayne’s streets are just as impressive as the natural beauty that surrounds them.

And one in particular — which hit the market just a couple of weeks back — embodies the ‘Island Paradise’ vibe of Key Biscayne to perfection.

Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty

The $20 million Mariner Dr. property was custom-built built in 2013 by world renowned architect Cesar Molina of CMA Design Studio, known for his signature “tropical modern’ designs.

Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty

Molina combines the clean lines and muted color palette of contemporary design with the warm, natural materials of exotic woods and stones typically found in island environments, and incorporates wellness and resort-like amenities into his projects.

The Key Biscayne house on Mariner Dr. is no exception, featuring beautiful natural stone and wood throughout, and incorporating the perfect amenities to make residents feel like they’re living in their own private resort.

Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty

The waterfront home sits on a canal with ocean access, and offers resort-style living at its finest — including 9 covered balconies, 4 covered terraces, and infinity lap pool, and even a private yacht dock behind the house.

With a generous 5,760 square feet of elegant living space, including a two-story living room, 5 bedrooms, 6 full baths and 1 half bath, the Key Biscayne house was fully refreshed and rejuvenated in 2022 with many upgrades and luxury finishes.

Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty
Photo credit: Virtuals 1 courtesy of Coldwell Banker Realty

It’s now being offered for sale with a $20 million price tag. Carmen D’Ambrosio with Coldwell Banker Realty, Key Biscayne holds the listing.

And we wouldn’t be at all surprised if a celebrity moves in. The area is quite popular among A-listers, who’ve been flocking to South Florida in recent years.

Rapper Rick Ross recently splurged $37 million for a waterfront home in the nearby Star Island, and rumor has it that soccer superstar Lionel Messi is also looking at Key Biscayne as a place to settle down following his move to Miami.

Messi is no stranger to Key Biscayne. Just a couple of years back, he rented a 5-bedroom waterfront mansion here, the former Matheson estate, known as the Mashta House — the most expensive house in Key Biscayne, which last sold for $47 million. Let’s hope the $20 million Mariner Dr. house is on his radar!

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With a decade-long career as a digital content creator, Georgie started out as a real estate journalist for Multi-Housing News & CPExecutive. She later transitioned into digital marketing, working with leading real estate websites like PropertyShark, RENTCafé and Point2Homes. After a brief but impactful stint in the start-up world, where she led the marketing divisions of fintech company NestReady and media publisher Goalcast, Georgie returned to her first passion, real estate, and founded FancyPantsHomes.com