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Single family home for sale at 422 Harbour Dr, Marathon, FL 33050 | MLS# NS1089477 | Listing updated on 2026-10-29
Photo 1 of Single family home for sale at 422 Harbour Dr, Marathon, FL 33050 | MLS# NS1089477 | Listing updated on 2026-10-29
Photo 2 of Single family home for sale at 422 Harbour Dr, Marathon, FL 33050 | MLS# NS1089477 | Listing updated on 2026-10-29
Photo 3 of Single family home for sale at 422 Harbour Dr, Marathon, FL 33050 | MLS# NS1089477 | Listing updated on 2026-10-29
Photo 4 of Single family home for sale at 422 Harbour Dr, Marathon, FL 33050 | MLS# NS1089477 | Listing updated on 2026-10-29
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$4,500,000

Monthly Est:$22,398

  • Beds Icon4 Beds
  • Beds Icon
    3 Baths
  • Beds Icon2,620sqft

422 Harbour Dr, Marathon, FL 33050

$22,398/moEst:

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  • Single Family Residence

  • Built in 1985

  • $-- HOA

  • 12,197 sqft lot

  • $1,718/sq.ft

Description

There are places where the water is part of the view. And then there's Duck Key, where it shapes the entire way of life. Set in the heart of the Florida Keys, this two-story waterfront residence brings together thoughtful living spaces, beautiful open-water scenery, and everything that makes island life so distinctive. The home offers four bedrooms and three bathrooms, surrounded by lush landscaping and designed to make the most of its waterfront setting. Outside, the property really comes into its own. A private pool, beach area, and dock put the water at the center of every day. And for boaters, the details matter: A 30,000-pound boat lift, a jet ski lift, a fish cleaning station, and steps leading right into the water. A morning offshore, an afternoon exploring the keys, or a quiet evening back at the pool. Here, those aren't special occasions. They're simply options. Upstairs, the open living kitchen areas are made for gathering, but the water remains the focal point with sliding glass doors that open to an expansive balcony that wraps around the upper level. The upper floor also includes the master bedroom with an ensuite bath, second bedroom and full bath in the hallway. Downstairs, a second living area, kitchenette, two additional bedrooms, and another full bathroom create a flexible layout for family and guests. From the lower level, step outside to the balcony, pool, beach and dock. Beyond the property, Duck Key has its own distinctive appeal. Join the optional Duck Key clubhouse for a pool, tennis, pickleball, and events, or Hawks Cay Resort for its Michelin-rated Salt and Ash restaurant, saltwater lagoon, Dolphin Connection, and pools.

  • Houzeo last checked: 5 minutes ago
  • Listing updated: October 29, 2026 at 4:49 pm
  • Listing Provided by: Linda Ivey (386) 679-5715 | THE HIGH TIDE GROUP (386) 682-0992
  • Source: Stellar MLS-FL as distributed by MLS GRID | MLS#: NS1089477 Stellar MLS-FL as distributed by MLS GRID

Property Details

  • Status

    Active

  • Type

    Single Family Residence

  • No. of Stories

    3

  • County

    Monroe County

  • City

    Marathon

  • Neighborhood

    --

  • Year Built

    1985

  • HOA Fees

    -

  • Finished Area

    2,620 sqft

  • Lot Size

    12,197 sqft lot

  • Basement Area

    - sqft

  • MLS Name

    Stellar MLS

  • MLS Number

    NS1089477

  • MLS Status

    Active

  • Days on Market

    20

  • Cumulative Days on Market

    15

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Location

Facts & Features

Rooms

  • Bedrooms & bathrooms

    Bedrooms: 4

    Bathrooms: 3

Interior

  • Cooling

    Central Air

  • Window Features

    Shades, Window Treatments

  • Exterior Features

    Balcony, Lighting, Outdoor Grill, Private Mailbox, Rain Gutters, Storage

  • Interior Features

    Beamed Ceilings, Cathedral Ceiling(s), Ceiling Fans(s), High Ceilings, Open Floorplan, Primary Bedroom Upstairs, Solid Wood Cabinets, Thermostat, Window Treatments

  • Sewer

    Public Sewer

  • Heating

    Central, Electric

  • Flooring

    Ceramic Tile, Travertine

  • Appliances

    Built In Oven, Cooktop, Dishwasher, Disposal, Electric Cooktop, Electric Water Heater, Freezer, Microwave, Range, Refrigerator, Washer, Wine Refrigerator

Construction

  • Year Built

    Year Built: 1985

  • Home type

    Single Family Residence

  • Foundation Details

    Other

  • Construction Materials

    Block

  • Roof

    Metal

Utilities & Energy

  • Security Features

    Security Lights, Smoke Detector(s)

  • Water Source

    Public

  • Pool Features

    In Ground, Gunite

  • Laundry Features

    Inside

  • Utilities

    Bb/hs Internet Available, Cable Connected, Electricity Connected, Public, Sewer Connected, Underground Utilities, Water Connected

Other Features

  • Subdivision Name

    Harbour Island Amd

Price History

DateEventPrice

10/14/2026

Source: mls_logoStellar MLS-FL #MFRNS1089477

Listed for Sale

$4,500,000

$1,718/sqft

Nearby Homes

Based on information from Stellar MLS® through Nov 04, 2026, 04:00AM as submitted to and distributed by MLS GRID. All data is obtained from various sources and may not have been verified by the broker or MLS GRID. Supplied Open House Information is subject to change without notice. All information should be independently reviewed and verified for accuracy. Properties may or may not be listed by the office/agent presenting the information. IDX information is provided exclusively for consumers’ personal non-commercial use. It may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. The data is deemed reliable but is not guaranteed by MLS GRID. The use of the MLS GRID Data may be subject to an end-user license agreement prescribed by the Member Participant’s applicable MLS, if any, and as amended from time to time. © 2026 Stellar MLS. All Rights Reserved.

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