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350 Buttonwood Bight Lane

Plantation Key, FL, 33070

Active

$14,000,000

5

Bedrooms

4

Bathrooms

3,582 sqft

Living Area

1987

Year Built

56,448

Lot Size (sqft)

3

Days on Market

Dock Score™

DockOnly
73
Good

What shaped this score

Bay Front
Dock with boat lift for up to 20ft
Bridge-free to bay & ocean
Fits boats up to 40ft

DockOnly.com rating, not provided by the MLS or listing broker.

Dock & Water AccessMLS

Bay Front📝 20K-lb boat lift

AI Aerial Imagery Detection

Dock DetectedBoat Lift DetectedSeawall DetectedDeep Water Indicators~38-52 ft dock

Detected by AI from open-source aerial mapping imagery and may not reflect current conditions. This information was not provided by the MLS or listing broker. Always verify dock infrastructure with the listing agent.

WaterwayDockOnly

No canal width is published for this dock — we found no facing bank within canal range to measure against.

That is the absence of a measurement, not a finding of open-water frontage. Check the waterway, depth and slip dimensions with the listing agent.

Navigation RouteDockOnly

Data sources: SFWMD AHED waterway polygons · FHWA National Bridge Inventory 2024 · Not provided by the MLS or listing broker.

Description

The most sought-after bay in all the Florida Keys, and one of the largest properties on it. This true double lot spans 1.3 acres with more than 250' of bayfront facing due west for the perfect nightly sunset. A white sand beach transitions into the clear bay waters, while a protected basin offers a 20,000 lb. lift accommodating up to a 40' boat and a 3,000 lb. skiff lift. Ultra-private, with no neighbors in sight and expansive green lawns throughout. The home is sophisticated yet inviting, with an incredible attention to detail throughout and a distinctive blend of Tuscan Mediterranean architecture and classic Keys styling. Enter through the gates into a private courtyard and open-air atrium with freshwater ponds and fountains. An elevator provides access to the second floor, where a one-of-a-kind living room overlooks the bay with exposed wood beams and tongue-and-groove ceilings. Updated throughout while preserving its original ornate finishes, this level flows from the living and dining rooms into the kitchen with a gas range and dumbwaiter. The bayfront primary suite features an impressive bath with dual vanity areas. Two additional bedrooms share a Jack-and-Jill bath, plus a half bath finishes off the second floor. Halfway down the main staircase is the entrance to one of the favorite rooms in the home: the library. With vaulted ceilings and a fireplace, it is the ultimate setting to work, relax with a good book, or serve as a fifth bedroom. The ground floor offers a separate ensuite guest bedroom, garage with front and rear doors, laundry room with double washers and dryers, and an outdoor kitchen. Outside, a massive 40' x 22' pool features a hot tub and beach-entry shelf. Extensive uplighting and downlighting illuminate the property at night. An additional front lot includes a detached structure currently used as a gym and storage. A once-in-a-lifetime opportunity to own one of Islamorada's most prized bayfront estates.

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Location

Plantation Key, FL, 33070

No price history available for this property.

Displayed by Blue Mar Real Estate Group Inc., Licensed Florida Real Estate Broker (DBPR CQ1018554) · [email protected]

Listing courtesy of Palm House Real Estate via Florida Keys MLS

Last checked: 1 hour ago

Listing updated: August 28, 2026

© 2026 Florida Keys Board of REALTORS®, Inc. All rights reserved. The data relating to real estate for sale on this website comes in part from the Internet Data Exchange (IDX) program of the Florida Keys Board of REALTORS®. Information is deemed reliable but not guaranteed and should be independently verified. All properties are subject to prior sale, change, or withdrawal.

IDX information is provided exclusively for consumers' personal, non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

Nearest Bridge Clearances

Florida Keys, critical for tall/large vessels

No bridge data available for this location.
FEMA Flood Zone VE
BFE: 12ft

Coastal High Hazard

View FEMA Flood Map →
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Mortgage Calculator

Estimate your monthly payment for this waterfront property

20%

$2,800,000 down

%
Principal & Interest$72,643/mo
Property Tax (est. ~1.2%, varies by county)$14,000/mo
Home Insurance (est.)$250/mo
Total Monthly Payment$86,893
Loan Amount: $11,200,000Rate: 6.75%
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$14,000,000Tour the dockSchedule a Showing
Navigation note: Navigation routes show the shortest mapped path to open water. A vessel taller than the binding bridge clearance may still reach open water via a longer alternate route that we don't currently map. Verify navigability with a local captain or surveyor before relying on it.