Florida Keys Real Estate

Listing Board: Marathon/Lower Keys

Current Price: $29,500,000

Listing Date: 2026-05-20

List Price: $29,500,000

City: MARATHON

Mile Marker: 58

Marathon Neighborhood: Grassy Key

Senior Community YN: No

Side: Bay/Gulf

Flood Zone: AE,AE,VE,VE

Alternate Key #: 1458074

Parcel #: 00375000-000000

Zoning: RM - Residential Medium

Deed Restrictions: No

Legal: BK 60 LOTS 20-21-22 CRAINS SUBD PB1-51 GRASSY KEY G70-134 OR519-1097 OR665-395 OR1137-1017 OR1261-496 OR1261-495 OR1314-

Taxes: 33507.82

Tax Year: 2025

Pub Sewer HkUp: No

Street #: 57783

Street Name: Morton

Street Suffix: Street

Key/Island: Marathon

State/Province: FL

Zip Code: 33050

County: Monroe

Subdivision: Crains Sub (58.0)

Area: 19 - Crawl Key & Grassy Key

Realtor.COM Type: Residential - Single Family

Waterfront: Yes

Control Depth: 4

Lot Size: 60 X 725

Lot SqFt: 51218

Pool: Yes

Total Units: 0

Acres: 3.07

SqFt Source: Builder/Architect

Rentals Allowed: No

Floor Number: 2

Style: Single Family

Year Built: 2022

Living Apx SqFt: 10000

Total Bedrooms: 10

Full Baths: 11

Half Baths: 2

Total Baths: 13

Remarks – Consumer: Newly Built Gulf-front Sanctuary with Panoramic Views, Guest and Pool Houses, Luxe Outdoor Living, and a Deepwater Navigable Dock. Set on 3 secluded acres+/- along one of the most protected stretches of the Gulf of America, 57783 Morton Street is a newly completed estate of rare scale, privacy, and modern coastal design. Surrounded by water, sandscape, and tidal ponds alive with marine life, the property offers more than 200'+/- of direct water frontage and uninterrupted views across the open Gulf. Completed in 2025 by builder and developer Alderuccio Corporation, this resilient, elevated retreat is constructed entirely of concrete and impact glass and is designed for effortless indoor-outdoor living. With three distinct finished living spaces totaling approximately 10,000 SF+/-, the estate functions as a private resort offering privacy, recreation, and exceptional access to the best of the Florida Keys. Though private and serene, the estate remains close to everything that defines Keys living. Dining, marinas, and shopping are less than ten minutes away, and the Florida Keys Marathon International Airport lies 4 miles+/- from the property for seamless private aviation access. Deepwater routes, snorkeling coves, and renowned fishing grounds are just moments from the protected 100' dock. The architecture emphasizes clarity, durability, and immersion in water and light. Walls of impact glass capture views of the Gulf, the bay, and the property's own tidal ponds, allowing natural light to animate the interiors throughout the day. Generous room proportions, ceiling heights of 10' to 12', and open circulation reinforce a sense of airiness and connection. Every finish, from porcelain flooring to quartzite counters and exterior of shell-stone, was selected for both resilience and refined coastal style. Smart home systems, solar power with battery backup, and integrated storm protection underscore a commitment to performance and longevity.

Mandatory Home Owners Asc: No

1st Right of Refusal: No

Association Fee $: 0

None: 1

Dock Length: 100

Dock: Wood

Boat Lift: 1

Boat Ramp: 1

Seawall: Cut/Natural

None: 1

Dryer: 1

Freezer: 1

Ice Machine: 1

Microwave: 1

Oven: 1

Refrigerator: 1

Stainless Steel Appliance(s): 1

Washer: 1

Other: Other Appliances

Pets Allowed: 1

Ceiling Fans(s): 1

Central Air: 1

Central: 1

Electric: 1

Solar: 1

Gulf Front: 1

Bay/Gulf View: 1

Built-in Cabinets: 1

Elevator: 1

Fireplace(s): 1

Walk-in Closet(s): 1

New Construction: 1

Gym: 1

Laundry Room: 1

Media Room: 1

Sun/Florida Room: 1

Other: 1

Above Flood: Unknown

Stories: 2 Stories

Impact Rstnce Doors: 1

Car(s): 3

Garage: 1

Detached: 1

Stucco: 1

2 Less Than 5 Acres: 1

Municipal Sewer: 1

Deck: 1

Open Porch/Balcony: 1

Patio: 1

Screened Patio: 1

Built-in Grill: 1

Detached Guest Qtrs: 1

Outdoor Shower: 1

Sandy Beach: 1

In Ground: 1

Solar Panels: 1

Status: Active