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Marathon oceanfront estate: the short answer
2405 Coco Plum Dr is a newly built Marathon oceanfront estate in the Florida Keys with about 200 feet of ocean frontage, a 100-foot infinity pool, 9 bedrooms and 9.5 bathrooms on roughly 1.72 acres. It is listed at $27,500,000 and has never been occupied.
By Erika Schell, P.A. | October 2026
Lea este artículo en español: mansión frente al mar en Marathon
Key takeaways
- Marathon oceanfront estate with about 200 feet of ocean frontage on roughly 1.72 acres.
- 100-foot infinity-edge pool, a beach-entry pool, a detached guest residence and a private elevator.
- New construction (2026), with a deeded 60-foot boat slip nearby and Marathon’s airport about five minutes away.
A private waterfront compound in the Keys
Estates like this are rare in the Florida Keys, where large oceanfront parcels and new construction are both hard to come by. The home sits on its own stretch of sand in the Coco Plum area of Marathon, with a 100-foot infinity pool that lines up with the horizon and a second, beach-entry pool for easy, family-style swimming. A detached guest residence gives visiting family their own space.
Inside: volume, light and ocean views
A double grand staircase frames the entry and draws the eye straight through to the water. The main living areas are open and bright, with walls of glass, a chef’s kitchen with a large island, a wet bar and a media room. Upstairs, expansive terraces extend the living space outdoors, and the bathrooms are finished like a spa. A private elevator connects the levels.
Home details
| Address | 2405 Coco Plum Dr, Marathon, FL 33050 |
| List price | $27,500,000 |
| Bedrooms / bathrooms | 9 / 9 full + 1 half |
| Living area | About 18,500 sq ft (MLS) |
| Lot | About 1.72 acres |
| Waterfront | About 200 ft of ocean frontage |
| Pools | 100-ft infinity-edge pool and beach-entry pool |
| Extras | Detached guest residence, private elevator, media room, wet bar |
| Garage | 8 spaces (MLS) |
| Boating | Deeded 60-ft boat slip at a nearby marina |
| Year built | 2026 (never occupied) |
| MLS # | A12067078 |
Living in Marathon
Marathon sits in the Middle Keys, about two and a half hours from Miami by car. It is a working island town with marinas, fishing and diving charters, restaurants on the water and a public beach at Sombrero Beach. For owners who fly, the Florida Keys Marathon International Airport is about five minutes away, according to the listing, which makes weekend trips from Miami, Palm Beach or farther away far easier.
What to check before you buy in the Keys
At this level, due diligence matters as much as design. Ask for the elevation certificate and flood zone, get windstorm and flood insurance quotes early, and review the permits and certificate of occupancy for the new construction. My guides on flood insurance for Florida luxury homes and the wind mitigation inspection cover the basics, and if you are selling another property to buy, see the 1031 exchange timeline.
Frequently asked questions
How much is 2405 Coco Plum Dr in Marathon?
It is listed at $27,500,000 (MLS #A12067078). Price and availability can change, so confirm the current status before scheduling a visit.
How big is the Marathon oceanfront estate?
It has 9 bedrooms and 9.5 bathrooms with about 18,500 square feet of living space per the MLS, on roughly 1.72 acres with about 200 feet of ocean frontage.
Is the home new construction?
Yes. The listing describes it as a newly completed estate built in 2026 that has never been occupied.
Does the property have a pool and a boat slip?
It has a 100-foot infinity-edge pool and a separate beach-entry pool. There is no dock on the lot, but the listing includes a deeded 60-foot boat slip at a marina about two minutes away.
How far is Marathon from Miami?
About 115 miles, usually around two and a half hours by car via US-1. Florida Keys Marathon International Airport is about five minutes from the property, according to the listing.
Who is the listing agent?
Cipriano Gabriel Agreda of The Keyes Company. Erika Schell can arrange a private showing for qualified buyers.
Schedule a private showing
If you would like to see this Marathon oceanfront estate in person, I can arrange a private showing and help you plan the visit, including travel by car or private aircraft. Call or WhatsApp me at (786) 801-4442 or email trust@erikaschell.com.
Listing agent: Cipriano Gabriel Agreda, The Keyes Company. MLS #A12067078. Photos courtesy of the listing agent; some images may be digitally enhanced or virtually staged. Information is deemed reliable but not guaranteed and should be independently verified; price and availability are subject to change.