103 52nd Street, Marathon, FL 33050
$2,100,000
Property Type:
Residential
Bedrooms:
5
Baths:
4
Square Footage:
1,924
Lot Size (sq. ft.):
6,955
Status:
Active
Current Price:
$2,100,000
List Date:
5/05/2026
Last Modified:
7/20/2026
Description
Welcome to Casa Sirena, a refined waterfront retreat in Marathon offering comfort, privacy, and strong investment appeal. Seller Financing available! This five bedroom, three bath home includes a convenient outdoor pool bath and is ideally positioned with water frontage on two sides.
Boaters will appreciate 100 feet of durable composite dockage, a jet ski lift, and a private boat ramp shared with just one neighbor. The home enjoys close proximity to Boot Key Harbor, with easy access to waterfront dining by boat, as well as a straightforward route to the Gulf via Knight Key Channel and immediate Ocean access. The surrounding Vaca Key and Boot Key provide a natural buffer, offering added protection from the elements.
Outdoor living is central to the property, with lush tropical landscaping, a saltwater pool, tiki hut, and expansive wraparound patios accessible from all rooms. Inside, the open floor plan connects the living, dining, and kitchen areas, creating a comfortable and functional space. The kitchen is equipped with high end appliances suited for everyday use or hosting.
Additional features include a spacious two car garage with ample storage, an extra washer and dryer, refrigerator, freezer, and workbench. The home is offered fully furnished and turnkey, ready for personal use or as a vacation rental. Privacy fencing, a security system, and gated dock and ramp access complete the offering.
More Information MLS# 619765
Contract Information
Current Price: $2,100,000
Listing Date: 2026-04-08
Listing Board: Florida Keys
List Price: $2,100,000
Location Tax Legal
Street #: 103
Street Name: 52nd
Street Suffix: Street
Key/Island: Marathon
State/Province: FL
Zip Code: 33050
County: Monroe
Subdivision: Marameade Amd (49.5)
Area: 13 - 7 Mile Bridge to Sombrero Bch Rd E & W
General Property Description
Realtor.COM Type: Residential - Single Family
Style: Single Family
Waterfront: Yes
Control Depth: 6
Pool: Yes
Year Built: 2004
Lot SqFt: 6955
Acres: 0.19
Living Apx SqFt: 1924
SqFt Source: Property Data Card
Total Bedrooms: 5
Full Baths: 3
Half Baths: 1
Total Baths: 4
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 Length: 100
Dock: Composite
Building Style
Above Flood: Yes
Stories: 2 Stories
Pool Info
Heated: Yes
Property Features
Fee Includes: None
Tax Exemptions: None
Waterfront: Canal Front
Waterview: Canal View
Dockage: Boat Ramp
Vehicle Storage: Garage; Carport; Covered Parking; Open Parking; RV Parking Covered; Trailer Storage
Furnished: Furnished
Cooling: Ceiling Fans(s); Central Air; Wall/Window Unit(s)
Heating: Central
Utilities: FKAA; Municipal Sewer
Interior Features: Quartz Countertops; Security System; Smoke Alarms; Storage; Walk-in Closet(s)
Pre-Wired: Cable
Appliances: Dishwasher; Disposal; Dryer; Freezer; Microwave; More Appliances; Oven; Range; Refrigerator; Stainless Steel Appliance(s); Washer
Exterior Features: Chickee Hut; Fencing; Fruit Tree(s); Lighting; Outdoor Shower; Privacy Wall/Fence; Storage
Pool Info: In Ground; Salt Water; Concrete; Decked
Construction: Combo Construction
Shutters: Accordion
Floor: Carpet; Combo; Tile
Roof: Shingle Roof
Pets: Pets Allowed
Land Size: Less Than 1/4 Acre
Terms: Cash; Conventional; FHA; Seller Finance Psble; VA
Listing Office: Ocean Sotheby's International Realty
Last Updated: July - 20 - 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.