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350 Buttonwood Bight Lane, Plantation Key, FL 33070

New Listing
$14,000,000
Property Type: Residential Bedrooms: 5 Baths: 4 Square Footage: 3,582 Lot Size (sq. ft.): 56,448 Status: Active
Current Price: $14,000,000 List Date: 8/25/2026 Last Modified: 8/26/2026

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.

Open Houses

Thursday, August 27, 10:00 am - 1:00 pm

More Information MLS# 621096

Contract Information

Current Price: $14,000,000 Listing Date: 2026-08-25 Listing Board: Florida Keys List Price: $14,000,000

Location Tax Legal

Street #: 350 Street Name: Buttonwood Bight Street Suffix: Lane Key/Island: Plantation Key State/Province: FL Zip Code: 33070 County: Monroe Subdivision: Lysiloma (89.5) Area: 25 - Plantation Key

General Property Description

Realtor.COM Type: Residential - Single Family Style: Single Family Waterfront: Yes Control Depth: 4 Pool: Yes Year Built: 1987 Lot SqFt: 56448 Acres: 1.3 Living Apx SqFt: 3582 SqFt Source: Tax Records Total Bedrooms: 5 Full Baths: 3 Half Baths: 1 Total Baths: 4 Rentals Allowed: With Restrictions

Status Change Info

Status: Active

Association Info

Mandatory Home Owners Asc: No 1st Right of Refusal: No

Dockage

Dock: Wood

Building Style

Above Flood: Unknown Stories: 2 Stories

Pool Info

Heated: Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Bay Front Waterview: Bay/Gulf View Dockage: Basin; Boat Lift; Boat Ramp Vehicle Storage: Garage; Off Street Parking Furnished: Negotiable Cooling: Central Air Utilities: FKAA; Municipal Sewer Interior Features: Cathedral Ceilings; Elevator; Security System; Walk-in Closet(s); Wet Bar; Window Treatments Specialty Rooms: Gym; Laundry Room Appliances: Dishwasher; Disposal; Dryer; Freezer; Gas Appliances; Ice Machine; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler Exterior Features: Built-in Grill; Chickee Hut; Fencing; Hot Tub; Lighting; Outdoor Kitchen; Outdoor Shower; Sandy Beach Pool Info: In Ground; Salt Water; Concrete Construction: CBS Floor: Carpet; Tile Roof: Tile Roof Pets: Pets Allowed Land Size: 1 Less Than 2 Acres
Listing Office: Palm House Real Estate
Last Updated: August - 26 - 2026
The data relating to real estate for sale on this web site comes in part from the Florida Keys MLS, Inc. Information provided is deemed reliable but not guaranteed. All properties are subject to prior sale, change or withdrawal. The information being provided is for consumers’ personal, non-commeral use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. IDX data is deemed reliable but is not guaranteed accurate by the MLS.

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