Welcome to your private paradise on prestigious Sombrero Isle with NEW PRICE ADJUSTMENT on vacant platted lot 13! The waterfront adjacent vacant lot 13 is now available at $1.7M, no interest for 2 years, $10K a month principle payment on lot bringing the reduced price for 1.5 acre estate to $7.5M for platted lots 13, 14 and 15.This luxurious 1.5-acre, resort-style estate on 3 platted lots boasts 500 feet of prime water frontage, offering endless possibilities: preserve as a private oasis, subdivide, or build an additional home. With immediate access to the Atlantic Ocean, this estate is perfect for fishing, diving, and boating. The private concrete boat basin accommodates vessels up to 60 ft., with a newly installed 28,000-pound boat lift and 10,000-pound jet ski lift, making it a boater's dream.The open and airy interior features vaulted ceilings, spacious hallways, and natural light throughout. Nearly every room offers stunning water views. With 7 bedrooms and 7 bathrooms, the home is perfect for hosting guests or generating substantial vacation rental income.Outdoors, enjoy the newly renovated saltwater pool and spa, lighted tennis court, peaceful palm grove, and lush tropical landscaping. A modern in-house gym and private guest quarters add convenience and luxury.Designed for security and self-sufficiency, the home features hurricane-rated windows and doors, a whole-house generator, a large cistern, and a state-of-the-art ADT security system.Located just one block from Sombrero Beach, this estate offers the perfect blend of tranquility and accessibility. With Marathon Airport only minutes away, you can easily fly into this tropical paradise or enjoy a scenic drive along the iconic Overseas Highway. This premier estate embodies the best of the Florida Keys lifestyle, combining modern amenities, timeless elegance, and an unbeatable location. Don't miss this rare opportunity to own a piece of paradise with this one-of-a-kind sanctuary.
For sale
$5,800,000
126 Calle Ensueno, Marathon, FL 33050
7beds
8,306sqft
Est.:
Single Family Residence
Built in 1981
1.47 Acres Lot
$-- Zestimate®
$698/sqft
$-- HOA
What's special
Modern in-house gymResort-style estateState-of-the-art adt security systemSpacious hallwaysPeaceful palm groveLighted tennis courtLush tropical landscaping
- 330 days
- on Zillow |
- 1,816 |
- 90 |
Zillow last checked: 7 hours ago
Listing updated: July 16, 2025 at 04:04am
Listed by:
Lisa Wiebe 561-386-4952,
Coldwell Banker Schmitt Real Estate Co.
Source: FLKMLS,MLS#: 611505
Originating MLS: Marathon/Lower Keys

Travel times
Tour with a buyer's agent
Tour with a buyer's agent
Facts & features
Interior
Bedrooms & bathrooms
- Bedrooms: 7
- Bathrooms: 7
- Full bathrooms: 6
- 1/2 bathrooms: 1
Cooling
- Central Air, Ceiling Fans(s)
Appliances
- Included: More Appliances, Stainless Steel Appliance(s), Wine Cooler, Ice Machine, Gas Appliances, Freezer, Disposal, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer, Washer
- Laundry: Laundry Room
Features
- Built-in Cabinets, Bar, Walk-In Closet(s), Storage, Granite Counters, Entrance Foyer, Split Bedroom, Cathedral Ceiling(s), Utility Room, Sun/Florida Room, Media Room, Gym
- Flooring: Laminate
- Doors: Glass Doors, Impact Rstnce Doors, Sliding Glass Doors
- Windows: Drapes/Blinds Incl, Window Treatments, Impact Rstnce Window, Aluminum Frames, Bahama
Interior area
- Total interior livable area: 8,306 sqft
Property
Parking
- Total spaces: 4
- Parking features: Garage, Trailer Storage, Covered, RV Parking Open, Off Street, Guest, Open, Garage Door Opener, Attached, Carport
- Has garage: Yes
- Has carport: Yes
- Has uncovered spaces: Yes
Accessibility
- Accessibility features: No, None
Features
- Levels: Two
- Stories: 2
- Patio & porch: Lanai, Open Porch/Balcony, Deck, Screened Patio, Patio
- Exterior features: Bar, Tennis Court(s), Storage, Outdoor Kitchen, Lighting, Rain Gutters, Boat Slip
- Has private pool: Yes
- Pool features: Heated, Above Ground, Decked, Concrete, Salt Water
- Has spa: Yes
- Spa features: Private
- Fencing: Privacy,Fenced
- Has view: Yes
- View description: Canal
- Has water view: Yes
- Water view: Canal
- Waterfront features: Canal Front, Waterfront, Seawall: Concrete, Dock: Concrete, Dockage: Boat Lift, Basin, Boat Slip
Lot
- Size: 1.47 Acres
- Features: 1 Less Than 2 Acres
- Residential vegetation: Fruit Tree(s)
Details
- Additional structures: Bath House, Workshop, Guest House, Gazebo
- Additional parcels included: 9105168
- Parcel number: 00357041001300
- Zoning: RM
- Zoning description: Residential Medium
Construction
Type & style
- Home type: SingleFamily
- Property subtype: Single Family Residence
Materials
- CBS, Frame, Concrete
- Roof: Metal
Condition
- Updated/Remodeled
- New construction: No
- Year built: 1981
Utilities & green energy
- Electric: Generator
- Sewer: Municipal Sewer, Public Sewer
- Water: Cistern
- Utilities for property: FKAA, Propane, Cable Available, Cable Connected
Green energy
- Water conservation: Cistern
Community & HOA
Community
- Features: Beach, Bike Paths
- Security: Smoke Detector(s), Security System, Electric Gate, On Premises System, Patrolled Area
- Subdivision: Sombrero Isle (49.5)
HOA
- Has HOA: No
- Services included: None
Location
- Region: Marathon
Financial & listing details
- Price per square foot: $698/sqft
- Tax assessed value: $4,201,789
- Annual tax amount: $36,239
- Date on market: 9/18/2024
- Listing terms: Seller Finance Psble,Cash,Conventional
- Loading
- Loading