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  • 1903 Sombrero Boulevard, Marathon, FL 33050 (MLS# 621660)

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

Overview

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 ...

Listing Details MLS# 621660

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
City
MARATHON
Off Shore Island
No
Mile Marker
49.5
Marathon Neighborhood
Country Club (Sombrero Blvd & Flamingo)
Side
Ocean
Flood Zone
AE
Alternate Key #
1434175
Parcel #
00355370000300
Zoning
RL - Residential Low
Deed Restrictions
Unknown
Legal
The Sombrero Properties Boot Key Pb5-101 Pt Parcel 11 (Pt Lot 28)
Taxes
22748.84
Tax Year
2025
Pub Sewer HkUp
Yes

Contract Information

Listing Board
Key West Association
As is Rght to Inspct
Yes
Species List
No

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
Yes
Total Baths
5
Rentals Allowed
With Restrictions
Min Rental Days
7

Association Info

Mandatory Home Owners Asc
No
1st Right of Refusal
No
Association Fee $
0

Dockage

Dock
Composite
Seawall
Rip Rap
Boat Lift
Yes

More Information

Building Style

Above Flood
Yes

Specialty Rooms

Guest/Servant Qtrs
Legal
Laundry Room
Yes
Sun/Florida Room
Yes
Utility Room
Yes

Pool Info

Heated
Yes
In Ground
Yes
Concrete
Yes
Decked
Yes

Remarks & Misc

Remarks – Consumer
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.
Directions
US 1 to Sombrero Road, the first right onto Sombrero Blvd. Go past Country Club and Dockside. Home will be on your right. There is a sign on property.

Fee Includes

None
Yes

Tax Exemptions

None
Yes

Appliances

Dishwasher
Yes
Disposal
Yes
Dryer
Yes
Gas Appliances
Yes
Ice Machine
Yes
Microwave
Yes
Oven
Yes
Range
Yes
Refrigerator
Yes
Stainless Steel Appliance(s)
Yes
Washer
Yes
Wine Cooler
Yes

Pets

Pets Allowed
Yes

Cooling

Ceiling Fans(s)
Yes
Central Air
Yes
Ductless
Yes

Waterfront

Canal Front
Yes

Waterview

Canal View
Yes

Floor

Marble
Yes

Neighborhood Feature

Beach
Yes
Other Area Features
Yes

Interior Features

Bar
Yes
Built-in Cabinets
Yes
Cathedral Ceilings
Yes
Entrance Foyer
Yes
Fireplace(s)
Yes
Granite Counter Top
Yes
Smoke Alarms
Yes
Split Bedroom
Yes
Storage
Yes
Tray Ceilings
Yes
Walk-in Closet(s)
Yes
Wet Bar
Yes
Whirlpool Bath Tub
Yes
Window Treatments
Yes

Windows/Doors

Impact Rstnce Doors
Yes
Impact Rstnce Window
Yes

Vehicle Storage

Garage
Yes
Open Parking
Yes
Attached
Yes
Auto Door Opener
Yes
Off Street Parking
Yes
Trailer Storage
Yes

Construction

CBS
Yes

Land Size

1/4 - 1/2 Acre
Yes

Furnished

Negotiable
Yes

Terms

Cash
Yes
Conventional
Yes

Utilities

Buyer to Verify
Yes
Cable Available
Yes
FKAA
Yes
Municipal Sewer
Yes

Porch/Balcony

Deck
Yes
Open Porch/Balcony
Yes
Patio
Yes

Title

Negotiable
Yes

Exterior Features

Built-in Grill
Yes
Detached Guest Qtrs
Yes
Fencing
Yes
Fruit Tree(s)
Yes
Hot Tub
Yes
Lighting
Yes
Outdoor Kitchen
Yes
Privacy Wall/Fence
Yes
Rain Gutters
Yes
Sprinkler System
Yes
Storage
Yes

Roof

Tile Roof
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.

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