Curious about this home?

Ask anything — no agents, no pressure

Try asking

About This Home

This 5-bedroom, 4-bathroom single family at 103 52nd Street in Marathon, FL is listed for $2,200,000 ($1,143 per sqft). Built in 2004, the home offers 1,924 sqft of living space on a 0.19 acres lot.

Agent 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 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.

Key Features

  • Built in 2004
  • 0.19 acre lot
  • Private pool
  • Waterfront

Property Details

3 full, 1 half
2004

Amenities

PoolWaterfrontA/C

Monthly Cost Estimate

$11,766/mo

20% down · 6.5% · 30 years

Principal$1,591
Interest$9,533
Insurance$642

Estimates only. Actual payments may vary.

Location

103 52nd Street

Marathon, FL 33050

Marameade Amd (49.5)

Features & Amenities

Interior Features

Security SystemStorageWalk-in Closet(s)Quartz Countertops

Exterior Features

Chickee HutFencingFruit Tree(s)LightingOutdoor ShowerPrivacy Wall/FenceStorage

Property Details

Flooring

ComboTileCarpet

Construction

Combo Construction

Pool Features

Porch

Heating

Central

Cooling

Wall/Window Unit(s)Central AirWindow Unit(s)

Appliances

More AppliancesWasherDryerDishwasherRefrigeratorRangeOvenMicrowaveDisposalFreezerStainless Steel Appliance(s)

Questions & Answers

This 5-bedroom, 4-bathroom single family at 103 52nd Street is listed at $2,200,000 ($1,143/sqft). The estimated monthly payment is $9,533 based on 20% down at 6.5% interest.

Key features include: Built in 2004, 0.19 acre lot, Private pool, Waterfront. Interior Features: Security System, Storage, Walk-in Closet(s). Exterior Features: Chickee Hut, Fencing, Fruit Tree(s).

This property is listed by Lindsey N. Davis and can be reached at 3053952380 or ldavis@oceansir.com.

LD

Lindsey N. Davis

Agent at Ocean Sotheby's International Realty

(305) 395-2380

Listed by Ocean Sotheby's International Realty · View on Broker Site

MLS# 619765· Source: listhub· Updated 54 days ago

Copyright © 2026 Florida Keys Board of REALTORS®. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

103 52nd Street, Marathon, FL 33050

Open this listing in: