259 Saint Thomas Avenue, Key Largo, FL 33037

New Listing

$5,200,000

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Property Type: Residential Bedrooms: 6 Baths: 8 Square Footage: 5,400 Lot Size (sq. ft.): 11,078 Status: Active

Current Price: $5,200,000 List Date: 10/21/2026 Last Modified: 10/21/2026

Overview

Description

Stunning brand-new waterfront estate offering 6 bedrooms and 8 bathrooms with modern designs and luxury finishes throughout. The gourmet kitchen features premium Sub-Zero appliances and flows seamlessly into spacious living and entertaining areas. Built for long-term durability with a metal roof, solar panels, and a water cistern system. Enjoy resort-style outdoor living with a custom pool, covered lounge areas, and a 55-foot private dock with a garage and tackle room, perfect for boaters and fishing enthusiasts. Experience the best of modern waterfront living in Key Largo. House is completely fenced not shown on pictures because all fencing is new.

Listing Details MLS# 621737

Location, Tax & Legal

Street #: 259
Street Name: Saint 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
Mile Marker: 100
Marathon Neighborhood: N/A
Side: Median
Flood Zone: AE,AE
Alternate Key #: 1553824
Parcel #: 00453473-000200
Zoning: IS - Improved Subivision District
Deed Restrictions: No
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
Acres: 0.25
Living Apx SqFt: 5400
SqFt Source: Builder/Architect
Total Bedrooms: 6
Full Baths: 8
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: Yes
Stories: 2 Stories

Remarks & Misc

Remarks – Consumer: Stunning brand-new waterfront estate offering 6 bedrooms and 8 bathrooms with modern designs and luxury finishes throughout. The gourmet kitchen features premium Sub-Zero appliances and flows seamlessly into spacious living and entertaining areas. Built for long-term durability with a metal roof, solar panels, and a water cistern system. Enjoy resort-style outdoor living with a custom pool, covered lounge areas, and a 55-foot private dock with a garage and tackle room, perfect for boaters and fishing enthusiasts. Experience the best of modern waterfront living in Key Largo. House is completely fenced not shown on pictures because all fencing is new.

Fee Includes

None: Yes

Tax Exemptions

None: Yes

Appliances

Dishwasher: Yes
Microwave: Yes
Oven: Yes
Refrigerator: Yes
Stainless Steel Appliance(s): 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

Built-in Cabinets: Yes
Pantry: Yes
Walk-in Closet(s): Yes

Property Condition

New Construction: Yes

Specialty Rooms

Laundry Room: Yes

Windows/Doors

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

Vehicle Storage

Garage: Yes

Construction

CBS: Yes

Land Size

1/4 - 1/2 Acre: Yes

Furnished

Unfurnished: Yes

Utilities

Cistern: Yes
Solar Power: Yes

Porch/Balcony

Open Porch/Balcony: Yes

Exterior Features

Fencing: Yes
Gazebo: Yes
Lighting: Yes

Pool Info

In Ground: 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; Solar Power Interior Features: Built-in Cabinets; Pantry; Walk-in Closet(s) Specialty Rooms: Laundry Room Appliances: Dishwasher; Microwave; Oven; Refrigerator; Stainless Steel Appliance(s) Exterior Features: Fencing; Gazebo; Lighting Pool Info: In Ground Construction: CBS Floor: Tile Pets: Pets Allowed Land Size: 1/4 - 1/2 Acre GF-Utilities: Cistern; Solar Panels

Listing Office: Golden International Realty

Last Updated: October - 21 - 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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