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259 St Thomas Avenue, Key Largo, FL 33037

$5,400,000
Property Type: Residential Bedrooms: 6 Baths: 8 Square Footage: 5,600 Lot Size (sq. ft.): 11,078 Status: Active
Current Price: $5,400,000 List Date: 2/09/2026 Last Modified: 4/19/2026

Overview

Description

Brand-new luxury waterfront construction featuring 6 bedrooms and 8 bathrooms with a sleek modern design and high-end finishes throughout. The chef's kitchen is equipped with premium Sub-Zero appliances and designed for both everyday living and entertaining. Built for efficiency and durability with a metal roof, solar panels, and a water cistern system. Outdoor living includes a resort-style pool, expansive covered entertaining areas, and a 55-foot private dock, garage and tackle room, ideal for boating and offshore access. A rare opportunity to own a newly built luxury waterfront home in Key Largo.

Listing Details MLS# 618563

Location, Tax & Legal

Street #
259
Street Name
St Thomas
Street Suffix
Avenue
Key/Island
Key Largo
State/Province
FL
Zip Code
33037
County
Monroe
Subdivision
Port Largo (100.0)
Area
27 - Key Largo MM 97-107
City
KEY LARGO
Off Shore Island
No
Mile Marker
100
Marathon Neighborhood
N/A
Side
Ocean
Flood Zone
AE,AE
Alternate Key #
1553824
Parcel #
00453473-000200
Zoning
OTH - Other Zoning
Deed Restrictions
Unknown
Legal
LT 259 PORT LARGO THIRD ADDITION KEY LARGO PB6-58 OR496-967 OR1637-1212 OR1819-742AFF OR1819-762 OR3175-1907
Taxes
7831.34
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
2026
Lot SqFt
11078
Lot Sqft Source
Builder/Architect
Acres
0.25
Living Apx SqFt
5600
SqFt Source
Builder/Architect
Total Bedrooms
6
Full Baths
7
Half Baths
Yes
Total Baths
8
Rentals Allowed
With Restrictions

Association Info

Mandatory Home Owners Asc
No
1st Right of Refusal
No
Association Fee $
0

Dockage

Dock Length
55
Dock
Concrete

More Information

Building Style

Above Flood
No

Remarks & Misc

Remarks – Consumer
Brand-new luxury waterfront construction featuring 6 bedrooms and 8 bathrooms with a sleek modern design and high-end finishes throughout. The chef's kitchen is equipped with premium Sub-Zero appliances and designed for both everyday living and entertaining. Built for efficiency and durability with a metal roof, solar panels, and a water cistern system. Outdoor living includes a resort-style pool, expansive covered entertaining areas, and a 55-foot private dock, garage and tackle room, ideal for boating and offshore access. A rare opportunity to own a newly built luxury waterfront home in Key Largo.

Fee Includes

None
Yes

Tax Exemptions

None
Yes

Appliances

Dishwasher
Yes
Microwave
Yes
Oven
Yes
Refrigerator
Yes

Pets

Pets Allowed
Yes

Cooling

Ceiling Fans(s)
Yes
Central Air
Yes

Waterfront

Canal Front
Yes

Waterview

Canal View
Yes

Floor

Tile
Yes

Interior Features

Pantry
Yes
Walk-in Closet(s)
Yes

Property Condition

New Construction
Yes

Specialty Rooms

Other
Yes

Windows/Doors

Impact Rstnce Doors
Yes
Impact Rstnce Window
Yes
Sliding Glass Doors
Yes

Vehicle Storage

Garage
Yes

Construction

Concrete
Yes

Land Size

1/4 - 1/2 Acre
Yes

Furnished

Unfurnished
Yes

Terms

Cash
Yes
Conventional
Yes

Utilities

Cistern
Yes
Municipal Sewer
Yes

Porch/Balcony

Deck
Yes

Exterior Features

Fencing
Yes
Lighting
Yes

Pool Info

In Ground
Yes

Roof

Metal Roof
Yes

GF-Utilities

Cistern
Yes
Solar Panels
Yes

Property Features

Fee Includes: None Tax Exemptions: None Waterfront: Canal Front Waterview: Canal View Property Condition: New Construction Vehicle Storage: Garage Furnished: Unfurnished Cooling: Ceiling Fans(s); Central Air Utilities: Cistern; Municipal Sewer Interior Features: Pantry; Walk-in Closet(s) Specialty Rooms: Other Appliances: Dishwasher; Microwave; Oven; Refrigerator Exterior Features: Fencing; Lighting Pool Info: In Ground Construction: Concrete Floor: Tile Roof: Metal Roof Pets: Pets Allowed Land Size: 1/4 - 1/2 Acre Terms: Cash; Conventional GF-Utilities: Cistern; Solar Panels
Listing Office: Golden International Realty
Last Updated: April - 19 - 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.