103 52nd Street, Marathon, FL 33050 (MLS# 619765)

103 52nd Street, Marathon, FL 33050

$2,100,000

Virtual Tour

https://bcove.video/4tbMYjH

Aerial view of patios and pool entertainment

Wide and deep canal with immediate Ocean and Bay access

Located at end of street, private and serene

Tropical landscaping provides a private barrier from canal

Private boat ramp shared with one neighbor

Private end of road access to home and boat ramp

Patio with outdoor dining for 8 off kitchen

Kitchen view into dining and living rooms

Laundry in hall, one of 2 sets of washer/dryers

Primary bedroom with mini split AC for added cooling

Primary bedroom with patio access overlooking canal

Primary bedroom with walk-in closet and ensuite bathroom

Primary walk-in closet with locked owner's closet option

Double sink vanity in primary ensuite bathroom

Downstairs guest suite with private patio

Two stall garage with ample storage space

Two stall garage with 2nd washer/dryer & additional entrance to home

Upstairs patio off primary bedroom overlooking canal

Patio sitting area overlooking canal. Large shade umbrellas not shown

Covered parking, large enough to accommodate an RV

Covered RV parking or parking for additional vehicles or boat trailer

Door to garage with entrance to home within

Outdoor convenience bath near Tiki hut and sitting area

Tiki hut with outdoor shower and sitting area

Sparkling pool, concrete deck with lounge chairs

Patio off downstairs suite leading to pool

Loungers next to pool, steps from the downstairs suite

100 ft composite dock with jet ski lift, fish cleaning station, power and water

Private landscaping give ultimate privacy without obscuring view

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: 9/11/2026

Overview

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 function ... (Read more)

Open Houses

Sunday, September 27, 2:00 pm - 4:00 pm

Listing Details MLS# 619765

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

Contract Information

Listing Board: Florida Keys

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: Yes
Total Baths: 4
Rentals Allowed: With Restrictions
Min Rental Days: 7

Association Info

Mandatory Home Owners Asc: No
1st Right of Refusal: No

Dockage

Dock Length: 100
Dock: Composite

More Information

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: September - 11 - 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.