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$5,600,000 Just Listed

  • For Sale
  • Active
  • Single Family
  • 6 Beds
  • 7 Full Baths
  • 1 Partial Bath
  • 5,400 Sq. Ft.
  • Updated 2 days ago

Next open house:

Open House: 10:30 AM - 12:30 PM

Saturday 2/14 10:30 AM - 12:30 PM

259 St Thomas Avenue,Key Largo, FL 33037

259 St Thomas AvenueKey LargoFL33037

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PICTURES COMING SOON. Brand-new waterfront construction featuring 6 bedrooms and 8 bathrooms with a modern design. This residence offers high-quality finishes throughout, including a chef's kitchen with premium Sub-Zero appliances. Built with efficiency and durability in mind, the home includes a metal roof, solar panels, and a water cistern system. Outdoor amenities include a resort-style pool, expansive covered entertaining areas, a 55-foot dock, and a tackle room--ideal for boating and waterfront living. A rare opportunity to own a luxury new construction combining modern design, high-end materials, and eco-conscious features.

Full Property Details for 259 St Thomas Ave

General

  • Price: $5,600,000
  • Taxes: $7,831 (2025)
  • Status: Active
  • Type: Single Family
  • Source: 927
  • MLS ID: 618563
  • Updated: 2/9/2026
  • Added to Site: 2 day(s) ago

Interior

  • Rooms/Areas: Other
  • Interior Features: Pantry, Walk-in Closet(s)
  • Appliances: Dishwasher, Microwave, Oven, Refrigerator
  • Furnishings: Unfurnished
  • Flooring: Tile

Rooms

Bathrooms

  • Total Bathrooms: 8
  • Full Bathrooms: 7
  • Half Bathrooms: 1

Bedrooms

  • Total Bedrooms: 6

Additional Information

  • Pool: Yes
  • Pool Description: In Ground

Exterior

  • Exterior Features: Fencing, Lighting
  • Deck/Patio: Deck

Parking

  • Garage: Yes
  • Parking: Garage

Location

  • Area: 27 - Key Largo MM 97-107
  • County: Monroe
  • Subdivision: Port Largo (100.0)

Community

  • Assoc. Fees Include: None
  • Pets Allowed: Yes

Heating & Cooling

  • Cooling Type: Central Air, Ceiling Fans(s)

Utilities

  • Water: Canal View
  • Utility Description: Cistern, Municipal Sewer

Structural Information

  • Architectural Style: Single Family
  • Construction Status: New Construction
  • Construction: Concrete
  • Roof: Metal Roof
  • Windows/Doors: Sliding Glass Doors, Impact Rstnce Window, Impact Rstnce Doors
  • Dock Size: 55
  • Square Feet: 5,400
  • Sq. Ft. Source: Builder/Architect
  • Year Built: 2026
  • Property Condition: New Construction

Lot Features

  • Lot Size (Sq. Ft.): 11,078
  • Lot Dimensions: x
  • Zoning: OTH - Other Zoning

Water Features

  • Water Front: Yes
  • Water View: Yes
  • Water Front Type: Canal Front

Financial Considerations

  • Tax Amount: $7,831
  • Tax Year: 2025
  • Terms: Cash, Conventional

Disclosures and Reports

  • Legal Description: LT 259 PORT LARGO THIRD ADDITION KEY LARGO PB6-58 OR496-967 OR1637-1212 OR1819-742AFF OR1819-762 OR3175-1907
  • Flood Zone: AE, AE
  • APN: 00453473-000200

Listed by Golden International Realty, Merlin Perez (305) 798-9725

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Listing agent

— 259 St Thomas Ave —

  • Merlin Perez

    Golden International Realty

Get Pre-Approved Today

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

Get Pre-Approved

Schools serving 259 St Thomas Ave

School District:Monroe County School District, Middle Torch Key, FL
NameGradesDistance
Key Largo School
104801 Overseas Highway, Key Largo, FL 33037
PK-85.2 mi
Coral Shores High School
89901 Old Highway, Tavernier, FL 33070
9-129.3 mi
Disclaimer: School attendance boundaries provided by Pitney Bowes and are for reference only. Contact the school directly to verify enrollment eligibility.

Price & Sales History for 259 St Thomas Ave Get Price Alerts and Save Property

Date
Details
Price
Change
Source
2/09/2026
Listed
$5,600,000
154.55%
MLS
5/20/2022
Sold
$2,200,000
—
Public Record
Get Price Alerts and Save Property
Disclaimer: Historical sales information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

Tax History for 259 St Thomas Ave

Year
Property Taxes
Change
Tax Assessment
Change
2024
$7,076
—
$991,171
6%
2024
$7,076
12%
$935,804
18%
2023
$6,319
304%
$796,107
312%
2021
$1,566
-13%
$193,014
-29%
2022
$1,796
15%
$270,231
40%
2021
$1,566
-1%
$193,066
—
2019
$1,580
3%
$193,117
9%
2018
$1,531
10%
$176,639
—
2017
$1,391
10%
$175,774
20%
2016
$1,263
-15%
$145,983
7%
2015
$1,488
-14%
$136,170
10%
2014
$1,722
61%
$123,791
10%
2013
$1,072
—
$112,538
—
View All
Disclaimer: Historical tax information is derived from public records provided by the county offices. Information is not guaranteed and should be independently verified.

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Be ready to buy your new home!

with our affiliated lender
NMLS#: 1598647

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Listed by Golden International Realty, Merlin Perez (305) 798-9725

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259 St Thomas Avenue, Key Largo, FL 33037 (MLS# 618563) is a Single Family property with 6 bedrooms, 7 full bathrooms and 1 partial bathroom. 259 St Thomas Avenue is currently listed for $5,600,000 and was received on February 09, 2026. Want to learn more about 259 St Thomas Avenue? Do you have questions about finding other Single Family real estate for sale in Key Largo? You can browse all Key Largo real estate or contact a Coldwell Banker agent to request more information.

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