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

103 52nd Street, Marathon, FL 33050

New Listing

$2,200,000

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

Upstairs patio off primary bedroom overlooking canal

Patio sitting area overlooking canal. Large shade umbrellas not shown

Covered parking for vehicles, boat trailer or RV

Tiki hut with outdoor shower and sitting area

Sparkling pool, decked with lounge chairs

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: $2,200,000 List Date: 5/05/2026 Last Modified: 5/05/2026

Overview

Description

Welcome to Casa Sirena, a refined waterfront retreat in Marathon offering comfort, privacy, and strong investment appeal. 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 bayside 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 ... (Read more)

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
City: MARATHON
Mile Marker: 49
Marathon Neighborhood: Old Town East (25th to Sombrero)
Side: Ocean
Alternate Key #: 1399043
Parcel #: 00325100000000
Zoning: RH - Residential High
Deed Restrictions: Unknown
Legal: Bk H Lt 6 Amended Plat Of Marmeade Subd Pb3-185 Key Vacca Or495-1064 Or561-527 Or1091-2254 Or1193-2141/44 Or1368-1730D/C
Taxes: 10953.28
Tax Year: 2025
Pub Sewer HkUp: Yes

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
Association Fee $: 0

Dockage

Dock Length: 100
Dock: Composite
Boat Ramp: Yes

More Information

Building Style

Above Flood: Yes
Stories: 2 Stories

Pool Info

Heated: Yes
In Ground: Yes
Salt Water: Yes
Concrete: Yes
Decked: Yes

Remarks & Misc

Remarks – Consumer: Welcome to Casa Sirena, a refined waterfront retreat in Marathon offering comfort, privacy, and strong investment appeal. 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 bayside 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.
Directions: When heading south on US1, turn left onto 49th St. which is just south of the Cracked Conch Cafe. Take left on Ocean Terr, right on 52nd St. Home is last house on right.

Fee Includes

None: Yes

Tax Exemptions

None: Yes

Appliances

Dishwasher: Yes
Disposal: Yes
Dryer: Yes
Freezer: Yes
Microwave: Yes
More Appliances: Yes
Oven: Yes
Range: Yes
Refrigerator: Yes
Stainless Steel Appliance(s): Yes
Washer: Yes

Pets

Pets Allowed: Yes

Cooling

Ceiling Fans(s): Yes
Central Air: Yes
Wall/Window Unit(s): Yes

Heating

Central: Yes

Waterfront

Canal Front: Yes

Waterview

Canal View: Yes

Floor

Carpet: Yes
Combo: Yes
Tile: Yes

Interior Features

Quartz Countertops: Yes
Security System: Yes
Smoke Alarms: Yes
Storage: Yes
Walk-in Closet(s): Yes

Vehicle Storage

Carport: Yes
Garage: Yes

Construction

Combo Construction: Yes

Land Size

Less Than 1/4 Acre: Yes

Furnished

Furnished: Yes

Terms

Cash: Yes
Conventional: Yes
FHA: Yes
VA: Yes

Utilities

FKAA: Yes
Municipal Sewer: Yes

Porch/Balcony

Open Porch/Balcony: Yes

Exterior Features

Chickee Hut: Yes
Fencing: Yes
Fruit Tree(s): Yes
Lighting: Yes
Outdoor Shower: Yes
Privacy Wall/Fence: Yes
Storage: Yes

Pre-Wired

Cable: Yes

Roof

Shingle Roof: Yes

Shutters

Accordion: Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Canal Front Waterview: Canal View Dockage: Boat Ramp Vehicle Storage: Garage; Carport 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; VA

Listing Office: Ocean Sotheby's International Realty

Last Updated: May - 05 - 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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