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303 Sombrero Beach Road, Marathon, FL 33050

New Listing
$1,549,000
Property Type: Residential Bedrooms: 4 Baths: 4 Square Footage: 2,114 Lot Size (sq. ft.): 10,800 Status: Active
Current Price: $1,549,000 List Date: 6/10/2026 Last Modified: 6/14/2026

Overview

Description

Waterfront duplex opportunity on Sombrero Beach Road in Marathon, just about 1 mile from Sombrero Beach. This stilted full duplex offers 4 bedrooms, 4 bathrooms, 2,114 square feet of interior living space, a pool, 110 feet of concrete seawall, dockage, and deep-water boating access. Each side features 2 bedrooms, 2 bathrooms, approximately 1,057 square feet, open living and dining areas, kitchen, washer and dryer, and enclosed sun porch areas with water views. The layout works well for a full-time residence, second home, investment property, or a live-on-one-side and rent-the-other setup. Outdoor features include an in-ground pool, decking, front porch, low-maintenance gravel yard, and a large circular paver driveway with plenty of parking and trailer storage. Boaters will appreciate the 110 feet of dockage with room for multiple vessels. The lower level includes two garages and substantial storage space, ideal for fishing gear, boating equipment, a cabana-style setup, or general st ...

Listing Details MLS# 620220

Location, Tax & Legal

Street #
303
Street Name
Sombrero Beach
Street Suffix
Road
Key/Island
Marathon
State/Province
FL
Zip Code
33050
County
Monroe
Subdivision
Sombrero Properties (49.5)
Area
14 - Sombrero Area
City
MARATHON
Mile Marker
49.5
Marathon Neighborhood
Country Club (Sombrero Blvd & Flamingo)
Side
Ocean
Alternate Key #
00355270000701
Parcel #
00355270000701
Zoning
RM-1 - Residential Medium - 1
Deed Restrictions
No
Legal
The Sombrero Properties Pb5-101 Boot Key Pt Parcel 5-D (Southerly Portion)
Taxes
13533.8
Tax Year
2025
Pub Sewer HkUp
Yes

Contract Information

Listing Board
Marathon/Lower Keys

General Property Description

Realtor.COM Type
Residential - Single Family
Style
Duplex
Waterfront
Yes
Control Depth
5
Pool
Yes
Year Built
1985
Total Units
2
Lot SqFt
10800
Lot Sqft Source
Property Data Card
Acres
0.25
Living Apx SqFt
2114
SqFt Source
Property Data Card
Total Bedrooms
4
Full Baths
4
Total Baths
4
Rentals Allowed
Yes
Min Rental Days
7

Association Info

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

Dockage

Dock Length
110
Seawall
Concrete

More Information

Building Style

Above Flood
Unknown

Pool Info

Heated
Yes
In Ground
Yes
Fiberglass
Yes

Remarks & Misc

Remarks – Consumer
Waterfront duplex opportunity on Sombrero Beach Road in Marathon, just about 1 mile from Sombrero Beach. This stilted full duplex offers 4 bedrooms, 4 bathrooms, 2,114 square feet of interior living space, a pool, 110 feet of concrete seawall, dockage, and deep-water boating access. Each side features 2 bedrooms, 2 bathrooms, approximately 1,057 square feet, open living and dining areas, kitchen, washer and dryer, and enclosed sun porch areas with water views. The layout works well for a full-time residence, second home, investment property, or a live-on-one-side and rent-the-other setup. Outdoor features include an in-ground pool, decking, front porch, low-maintenance gravel yard, and a large circular paver driveway with plenty of parking and trailer storage. Boaters will appreciate the 110 feet of dockage with room for multiple vessels. The lower level includes two garages and substantial storage space, ideal for fishing gear, boating equipment, a cabana-style setup, or general storage. With its waterfront setting, duplex layout, pool, dockage, and close proximity to Sombrero Beach, this property offers multiple options in one of Marathon's most desirable lifestyle locations. B&BATVAI
Directions
US 1 to Sombrero Beach Road to address. Right side. Approx. 3/4 of a mile from US 1.

Fee Includes

None
Yes

Tax Exemptions

None
Yes

Appliances

Dishwasher
Yes
Disposal
Yes
Dryer
Yes
Microwave
Yes
Range
Yes
Refrigerator
Yes
Washer
Yes

Pets

Pets Allowed
Yes

Cooling

Ceiling Fans(s)
Yes
Central Air
Yes

Waterfront

Canal Front
Yes

Waterview

Canal View
Yes

Floor

Tile
Yes

Neighborhood Feature

Beach
Yes
Bike Paths
Yes

Vehicle Storage

Garage
Yes
Open Parking
Yes

Construction

Combo Construction
Yes

Land Size

Less Than 1/4 Acre
Yes

Furnished

Furnished
Yes

Terms

Cash
Yes
Conventional
Yes
Seller Finance Psble
Yes

Utilities

Buyer to Verify
Yes
Cable Available
Yes
Elect Separate Meter
Yes
FKAA
Yes
Municipal Sewer
Yes
Water Separate Meter
Yes

Porch/Balcony

Open Porch/Balcony
Yes
Screened P/B
Yes

Title

Title Ins - Buyer
Yes

Shutters

Panel
Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Canal Front Waterview: Canal View Vehicle Storage: Garage; Open Parking Furnished: Furnished Cooling: Ceiling Fans(s); Central Air Utilities: Buyer to Verify; Cable Available; Elect Separate Meter; FKAA; Municipal Sewer; Water Separate Meter Appliances: Dishwasher; Disposal; Dryer; Microwave; Range; Refrigerator; Washer Pool Info: In Ground; Fiberglass Construction: Combo Construction Shutters: Panel Floor: Tile Pets: Pets Allowed Neighborhood Feature: Beach; Bike Paths Land Size: Less Than 1/4 Acre Terms: Cash; Conventional; Seller Finance Psble Title: Title Ins - Buyer
Listing Office: Coldwell Banker Schmitt Real Estate Co.
Last Updated: June - 14 - 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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