1903 Sombrero Boulevard, Marathon, FL 33050
New Listing
$4,499,000
Property Type:
Residential
Bedrooms:
5
Baths:
5
Square Footage:
4,836
Lot Size (sq. ft.):
18,349
Status:
Active
Current Price:
$4,499,000
List Date:
10/16/2026
Last Modified:
10/16/2026
Description
Located right on coveted Sister Creek discover exceptional waterfront living in this expansive Marathon estate overlooking the golf course and a deep-water canal with deep water access to both the Atlantic Ocean and Gulf. Offering 4,836 sq. ft. of combined living space, the property features a 4-bedroom, 3.5-bath Main Residence and detached 1-bedroom, 1-bath Guest Suite. A grand entry welcomes you with soaring ceilings and a sweeping curved wood staircase, while elegant travertine flooring flows throughout the main living areas. The spacious Living Area showcases private water views, a fireplace, wet bar and multiple glass doors opening to the pool deck. The well-appointed Kitchen features granite countertops, custom cabinetry, GE Monogram range and breakfast bar overlooking the Dining Area. The main-level Primary Suite offers long water views, a generous walk-in closet and luxurious Bath with soaking tub, dual vanities and steam shower. Upstairs, two ensuite Guest Bedrooms enjoy water views, while a versatile fourth Bedroom opens to a private balcony overlooking the golf course. Designed for effortless indoor-outdoor entertaining, the expansive waterfront patio features a covered outdoor Kitchen, heated pool and raised spillover spa surrounded by tropical landscaping. Boating enthusiasts will appreciate an 89' dock, additional 10' x 14' floating platform, 20,000 lb. boat lift and angler's prep station. The detached Guest Suite offers private accommodations with a sitting area, wet bar and full Bath. Additional highlights include impact windows and doors, 2-car garage, dual laundry areas and irrigation system. A rare opportunity to enjoy spacious waterfront living, exceptional boating access and golf course views in the heart of the Florida Keys.
More Information MLS# 621660
Contract Information
Current Price: $4,499,000
Listing Date: 2026-10-16
Listing Board: Key West Association
List Price: $4,499,000
As is Rght to Inspct: Yes
Species List: No
Location Tax Legal
Street #: 1903
Street Name: Sombrero
Street Suffix: Boulevard
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Sombrero Properties (49.5)
Area: 14 - Sombrero Area
General Property Description
Realtor.COM Type: Residential - Single Family
Style: Single Family
Waterfront: Yes
Control Depth: 6
Pool: Yes
Year Built: 2007
Lot SqFt: 18349
Lot Sqft Source: Property Data Card
Acres: 0.42
Living Apx SqFt: 4836
SqFt Source: Property Data Card
Total Bedrooms: 5
Full Baths: 4
Half Baths: 1
Total Baths: 5
Rentals Allowed: With Restrictions
Min Rental Days: 7
Status Change Info
Status: Active
Association Info
Mandatory Home Owners Asc: No
1st Right of Refusal: No
Dockage
Dock: Composite
Seawall: Rip Rap
Building Style
Above Flood: Yes
Specialty Rooms
Guest/Servant Qtrs: Legal
Pool Info
Heated: Yes
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Canal Front
Waterview: Canal View
Dockage: Boat Lift
Vehicle Storage: Garage; Attached; Auto Door Opener; Off Street Parking; Open Parking; Trailer Storage
Furnished: Negotiable
Cooling: Ceiling Fans(s); Central Air; Ductless
Utilities: Buyer to Verify; Cable Available; FKAA; Municipal Sewer
Interior Features: Bar; Built-in Cabinets; Cathedral Ceilings; Entrance Foyer; Fireplace(s); Granite Counter Top; Smoke Alarms; Split Bedroom; Storage; Tray Ceilings; Walk-in Closet(s); Wet Bar; Whirlpool Bath Tub; Window Treatments
Specialty Rooms: Laundry Room; Sun/Florida Room; Utility Room
Appliances: Dishwasher; Disposal; Dryer; Gas Appliances; Ice Machine; Microwave; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer; Wine Cooler
Exterior Features: Built-in Grill; Detached Guest Qtrs; Fencing; Fruit Tree(s); Hot Tub; Lighting; Outdoor Kitchen; Privacy Wall/Fence; Rain Gutters; Sprinkler System; Storage
Pool Info: In Ground; Concrete; Decked
Construction: CBS
Floor: Marble
Roof: Tile Roof
Pets: Pets Allowed
Neighborhood Feature: Beach; Other Area Features
Land Size: 1/4 - 1/2 Acre
Terms: Cash; Conventional
Title: Negotiable
Listing Office: Coldwell Banker Schmitt Real Estate Co
Last Updated: October - 16 - 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.