143 Dorsett Drive, Marathon, FL

$4,950,000

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4

Beds

3

Baths

2,121

Square feet

28,750

Land Size

About 143 Dorsett Drive

Introducing - Casa Del Mar Estate - this exceptional new home offers a rare level of privacy, scale, and waterfront living on an expansive 26,000+ square foot lot accessed by a private road. Designed to take full advantage of its spectacular setting, the property enjoys unobstructed ocean views and an effortless connection between the residence and the surrounding water. The main living quarters offer four bedrooms and three bathrooms, complemented by substantial finished storage space on the lower level. Built with quality and longevity in mind, the residence features impact-resistant windows and doors, a durable metal roof, concrete construction, and premium finishes throughout, offering the ideal combination of style, security, and peace of mind for waterfront living in the Florida Keys. Beyond the residence, the grounds have been thoughtfully designed for refined outdoor living and entertaining, with a resort-style pool positioned directly toward the ocean and a beautifully appointed gazebo creating the perfect setting for sunset gatherings and private celebrations. An outdoor kitchen, pool table, and table tennis area further extend the living space outdoors, creating an environment equally suited to relaxed afternoons with family or elegant entertaining with guests. The waterfront experience is equally impressive, with generous dockage and a new 20,000-pound boat lift, providing exceptional convenience for boating. Two substantial outdoor sheds offer additional storage for boat side essentials, tools, fishing equipment, and water toys, while the expansive grounds provide something rarely found in the Keys: meaningful room for future expansion. A generous portion of the property remains available for new owners to reimagine and potentially add a guest house, A rare combination of privacy, expansive oceanfront grounds, unobstructed views, exceptional boating amenities, and future expansion potential, offering the ultimate Florida Keys lifestyle.

Features of 143 Dorsett Drive

MLS® # 621424
Price $4,950,000
Bedrooms 4
Bathrooms 3.00
Full Baths 3
Square Footage 2,121
Land Size 28,750
Year Built 2024
Type Residential
Sub-Type Single Family Residence
Status Active

Community Information

Address 143 Dorsett Drive
Area 19 - Crawl Key & Grassy Key
Subdivision Dorsett Sub (59.0)
City Marathon
County Monroe
State FL
Zip Code 33050

Amenities

Utilities FKAA, Municipal Sewer
Parking Spaces 4
Parking Open Parking, RV Parking Open, Trailer Storage, Covered Parking
View Bay/Gulf View, Open Water View
Is Waterfront Yes
Waterfront Bay Front, Gulf Front, Open Water
Has Pool Yes
Pool In Ground, Concrete

Interior

Interior Features Built-in Cabinets, Walk-in Closet(s), Quartz Countertops
Appliances Washer, Dryer, Dishwasher, Refrigerator, Range, Oven, Microwave, Freezer, Ice Machine, Stainless Steel Appliance(s)
Cooling Central Air, Ceiling Fans(s)
Fireplace No
Has Basement No

Exterior

Exterior Features Fencing, Gazebo, Outdoor Kitchen, Shed, Storage
Lot Description 1/2 - Less Than 1 AC
Windows French Doors, Impact Rstnce Window, Impact Rstnce Doors
Roof Metal Roof
Construction CBS

Additional Information

Date Listed September 28th, 2026
Zoning RM - Residential Medium
Short Sale No
RE / Bank Owned No

Listing Details

AgentSaara Victoria Staten
OfficeEngel & Völkers Marathon

Listing Map

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