$5,000,000
SOLD AUG 28, 2025

437 Harbour Dr Marathon, FL 33050

3 Beds
3 Baths
2,780 Sq Ft
1.35 Acres

Recently Sold

$1,799 Per Sq Ft

33% Below List Price

374 Days on Market

About This Home

As of August 2025

Nestled on a lushly landscaped, gated point lot, this elegant Oceanfront Duck Key Estate epitomizes resort-style seaside living. Offering sprawling dockage with enviable boating, custom 2021 pool, and sandy beach, your ideal Florida Keys lifestyle awaits! Built in 2020, every detail has been considered in this intuitively designed retreat; with expertly curated aesthetics blending relaxed sophistication with the surrounding turquoise waters, beckoning the outdoors in. Upon entry, the massive great room boasts cathedral tongue and groove ceilings and sweeping views of Toms Harbour. Entertain for the masses with a breezy open concept floor plan and an expertly-appointed Chef's Kitchen in the heart of the home. Premium Viking appliances, granite countertops, custom cabinetry, and sprawling island with seating allows for cultivating culinary masterpieces with ease. Wake to endless turquoise water views in the primary suite, which features private balcony, hidden TV lift, custom walk-in closet, and opulent en suite bath with dolomite stone shower. Visitors will enjoy elevated accommodation in either of two generous guest bedrooms, also complete with Ocean Views! Additional interior upgrades include a multi-use laundry room with office and pantry space, and two climate-controlled attics. Built to withstand the elements with impact resistant doors and windows. Enjoy year-round alfresco living from an expansive covered veranda. Downstairs, this exceptional property caters to outdoor entertaining with a backyard oasis complete with in-ground, concrete, saltwater pool and spa with heater, chiller, and custom lighting. Steps from the pool, a dock with 20K and 10K lifts, allows for frequent boating. This unparalleled property also offers a sandy beach, private lagoon, and low-maintenance turf yard. Providing abundant privacy and incomparable Sunrises and Sunsets, this exquisite coastal estate offers a refined Florida Keys lifestyle where relaxation meets luxury.

Last Agent to Sell the Property

Lisa Ferringo

Coldwell Banker Schmitt Lower Keys (KW) License #605677 Listed on: 07/02/2024

Coldwell Banker Schmitt Lower Keys (KW)

Last Buyer's Agent

Richard Phillips

Coldwell Banker Schmitt Real Estate Co. License #6502322908

Coldwell Banker Schmitt Real Estate Co.

Home Details

Home Type

Single Family

Est. Annual Taxes

$27,717

Year Built

2020

Lot Details

0

Listing Details

  • Property Type: Residential
  • Style: Single Family
  • As Is Right To Inspect: Yes
  • First Right of Refusal: No
  • Mandatory HOA: No
  • Control Depth: 4
  • Dockage Dock: Wood
  • Document Count: 3
  • Fee Includes: None
  • Key Island: Duck Key
  • Limited Representation: No
  • Marathon Neighborhood: N/A
  • Mile Marker: 61.00
  • Min Rental Days: 28.00
  • M L S Identifier: 20060123165453488875000000
  • Neighborhood Feature: Community Pool, Bike Paths, Spa, Other Area Features, Beach, Tennis Courts, Clubhouse
  • Off Shore Island: No
  • Pets: Pets Allowed
  • Property Group I D: 19990816212109142258000000
  • Sale Terms: Cash
  • Side: Ocean
  • State Province: FL
  • Taxes: 27717.47
  • Title: Negotiable
  • Vehicle Storage: Carport, Trailer Storage, Covered Parking, Off Street Parking, Open Parking
  • Vehicle Storage Cars: 4+
  • Year Built: 2020
  • Alternate Key Number: 1460231
  • Building Style Stilt Column Height: Medium - 5Ft - 9Ft
  • Cooling Heating: Central Air, Ceiling Fans(s)
  • Lot Sq Ft: 19200.00
  • Pool Info: In Ground, Concrete, Salt Water
  • Pool Info Heated: Yes
  • Porch Balcony: Open Porch/Balcony, Deck, Patio
  • Shutters: Roll Down Electric
  • Species List: No
  • Tax Exemptions: None
  • Building Style Above Flood: Unknown
  • Estimated Living Sq Ft: 2780.00
  • Pool Info Other: Spa, Chiller
  • G F Interior Features: Tankless Hot Wtr Htr
  • Property Condition: Updated/Remodeled
  • Sewer Hook Up: Yes
  • Statistical Purposes Only: No
  • Special Features: None
  • Property Sub Type: Detached

Interior Features

  • Interior Amenities: Cathedral Ceilings, Quartz Countertops, Pull Down Stairs, Bar, Walk-in Closet(s), Storage, Smoke Alarms, Security System, Granite Counter Top, Built-in Cabinets, Entrance Foyer, Pantry, Split Bedroom
  • Total Bathrooms: 3.00
  • Full Bathrooms: 3
  • Appliances: More Appliances, Stainless Steel Appliance(s), Wine Cooler, Microwave, Oven, Range, Refrigerator, Dishwasher, Dryer, Washer
  • Floor: Tile
  • Specialty Rooms: Laundry Room, Workshop, Utility Room
  • Windows/Doors: Impact Rstnce Window, Impact Rstnce Doors
  • Appliances Other: Vent Hood
  • Total Bedrooms: 3
  • Sq Ft Remarks: Lot SqFt includes bay bottom.

Exterior Features

  • Dockage: Boat Lift
  • Waterfront: Oceanfront, Open Water
  • Waterfront: Yes
  • Construction: CBS
  • Exterior Features: Fencing, Storage, Sandy Beach, Lighting, Hot Tub
  • Roof: Metal Roof
  • Waterview: Ocean View, Open Water View
  • Pool: Yes

Utilities

  • Security: Electric Gate
  • Utilities: FKAA, Buyer to Verify, Municipal Sewer

Lot Info

  • Deed Restrictions: Unknown
  • Flood Zone: VE,AE
  • Parcel Number: 00376951-002200
  • Land Size: 1 Less Than 2 Acres
  • Acres: 1.35

Rental Info

  • Rentals Allowed: With Restrictions
  • Furnished: Negotiable

Tax Info

  • Tax Year: 2023

Ownership History

Date Name Owned For Owner Type

Purchase Details

Listed on
Jul 2, 2024
Closed on
Aug 28, 2025
Sold by
Nye William
Bought by
Alexander Louis Fucci And Andrea Michelle Fuc and Fucci
Seller's Agent
Lisa Ferringo
Coldwell Banker Schmitt Lower Keys (KW)
Buyer's Agent
Richard Phillips
Coldwell Banker Schmitt Real Estate Co.
List Price
$7,499,000
Sold Price
$5,000,000
Premium/Discount to List
-$2,499,000
-33.32%
Views
1187

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
-95.96%

Purchase Details

Listed on
Dec 5, 2017
Closed on
Jul 5, 2018
Sold by
Wright Robert E and Wright Valerie J
Bought by
Nye William
Seller's Agent
Kim Thaler
Ocean Sotheby's International Realty
Buyer's Agent
Kristen Brenner
Florida Keys Real Estate Group
List Price
$2,100,000
Sold Price
$1,800,000
Premium/Discount to List
-$300,000
-14.29%

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Avg. Annual Appreciation
15.31%
Original Mortgage
$1,260,000
Interest Rate
4.6%
Mortgage Type
Purchase Money Mortgage

Purchase Details

Listed on
Dec 5, 2017
Closed on
Jun 15, 2018
Sold by
Wright Robert E and Wright Valerie J
Bought by
Nye William
Seller's Agent
Kim Thaler
Ocean Sotheby's International Realty
Buyer's Agent
Kristen Brenner
Florida Keys Real Estate Group
List Price
$2,100,000
Sold Price
$1,800,000
Premium/Discount to List
-$300,000
-14.29%

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$1,260,000
Interest Rate
4.6%
Mortgage Type
Purchase Money Mortgage

Purchase Details

Closed on
Jun 2, 2003
Sold by
Kirkland James H
Bought by
Wright Robert E and Cardarelli Wright Valerie J

Purchase Details

Closed on
Feb 26, 2001
Sold by
E/T Oceanside Investments C
Bought by
County Of Monroe

Purchase Details

Closed on
Oct 30, 2000
Sold by
Eva B Avekka Tr and Gabruekke A Sgubigara Tr
Bought by
Kirkland James H

Home Financials for this Owner

Home Financials are based on the most recent Mortgage that was taken out on this home.
Original Mortgage
$728,000
Interest Rate
7.91%
Mortgage Type
New Conventional
Source: Public Records

Range of Values:

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Average Value
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List Price
Sold Price
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Home Values in the Area

Source: Public Records

Average Home Value in this Area

Source: Public Records

Purchase History

Date Type Sale Price Title Company
Warranty Deed $5,000,000 None Listed On Document
Warranty Deed $5,000,000 None Listed On Document
Warranty Deed $1,800,000 None Listed On Document
Warranty Deed $1,800,000 None Listed On Document
Warranty Deed $1,250,000 --
Warranty Deed -- --
Warranty Deed $910,000 --
Source: Public Records

Mortgage History

Date Status Loan Amount Loan Type
Previous Owner $1,260,000 Purchase Money Mortgage
Previous Owner $1,260,000 Purchase Money Mortgage
Previous Owner $865,000 Fannie Mae Freddie Mac
Previous Owner $600,000 New Conventional
Previous Owner $728,000 New Conventional
Source: Public Records

Property History

Date Event Price Change Sq Ft Price
08/28/2025 08/28/25 Sold $5,000,000 -9.1% $1,799 / Sq Ft
07/11/2025 07/11/25 Pending -- -- --
05/28/2025 05/28/25 Price Changed $5,499,000 -12.7% $1,978 / Sq Ft
04/08/2025 04/08/25 Price Changed $6,299,000 -10.0% $2,266 / Sq Ft
01/22/2025 01/22/25 Price Changed $6,999,000 -6.7% $2,518 / Sq Ft
07/02/2024 07/02/24 For Sale $7,499,000 +316.6% $2,697 / Sq Ft
06/28/2018 06/28/18 Sold $1,800,000 -14.3% $610 / Sq Ft
04/21/2018 04/21/18 Pending -- -- --
12/05/2017 12/05/17 For Sale $2,100,000 -- $711 / Sq Ft
Source: Key West Association of REALTORS®

Tax History Compared to Growth

Source: Public Records

Tax History

Year Tax Paid Tax Assessment Tax Assessment Total Assessment is a certain percentage of the fair market value that is determined by local assessors to be the total taxable value of land and additions on the property. Land Improvement
2024 $27,717 $4,113,312 $3,287,828 $825,484
2023 $27,717 $4,566,392 $3,763,949 $802,443
2022 $21,573 $3,032,344 $2,322,567 $709,777
2021 $18,587 $1,926,599 $1,389,908 $536,691
2020 $16,810 $1,657,776 $1,120,801 $536,975
2019 $16,239 $1,592,471 $1,080,250 $512,221
2018 $15,251 $1,782,230 $1,194,399 $587,831
2017 $14,359 $1,707,175 $0 $0
2016 $13,391 $1,521,333 $0 $0
2015 $12,590 $1,368,399 $0 $0
2014 $11,260 $1,043,825 $0 $0
Source: Public Records

Agents Affiliated with this Home

  • Lisa Ferringo

    Seller's Agent in 2025

    Lisa Ferringo

    Coldwell Banker Schmitt Lower Keys (KW)

    (305) 797-1221

    4 in this area

    620 Total Sales

    Lisa Ferringo
    Section Image

  • R

    Buyer's Agent in 2025

    Richard Phillips

    Coldwell Banker Schmitt Real Estate Co.

    (248) 505-4058

    19 in this area

    59 Total Sales

    Richard Phillips
    Section Image
  • Kim Thaler

    Seller's Agent in 2018

    Kim Thaler

    Ocean Sotheby's International Realty

    (305) 393-2787

    52 Total Sales

    Kim Thaler
    Section Image

  • K

    Buyer's Agent in 2018

    Kristen Brenner

    Florida Keys Real Estate Group

    (561) 504-2554

    4 in this area

    13 Total Sales

    Kristen Brenner
    Section Image
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Map

Source: Key West Association of REALTORS®

MLS Number: 610640

Key West Association of REALTORS®

APN: 00376951-002200

Florida Monroe County Marathon 33050

437 Harbour Dr, Marathon, FL

This home is located at 437 Harbour Dr, Marathon, FL 33050 and is currently priced at $5,000,000, approximately $1,798 per square foot. This property was built in 2020. 437 Harbour Dr is a home located in Monroe County with nearby schools including Stanley Switlik Elementary School, Marathon Middle High School, and Coral Shores High School.

Disclaimer: Certain information contained herein is derived from information provided by parties other than Homes.com. All information provided is deemed reliable, but is not guaranteed to be accurate and should be independently verified.

Key West Association of REALTORS® IDX information is provided exclusively for personal, non-commercial use, and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. Information is deemed reliable but not guaranteed.

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