Single-family home for sale

$4,650,000

3742 Seagrape StBig Pine, FL 33043

  • 3 Beds
  • 3 Baths
  • 4,687 Sq ft
  • 17,260 Lot sq ft
  • 2014 Built

About this home

Escape to “The Castle”, a luxurious gated Gulf-front estate spanning 1.14 acres on Big Pine Key. Built in 2014 with poured concrete, impact windows/doors, elevator, and generator, this 4,600+ sq. ft. masterpiece offers 3 bedrooms, 3 baths, and breathtaking Gulf views. Boaters enjoy 235’ of dockage: 140’ protected canal dock with lift, ramp, and slip, plus 95’ open-water pier dock with lift and seawall. Inside, a chef’s kitchen with 10.5’ island, dual sinks, Jenn-Air gas range, and wood cabinetry flows to a grand family room, theater, and rooftop deck. The top-floor primary suite boasts water views, office, lounge, spa bath, and custom closet. Outside, a resort-style pool with spa, heater/chiller, and LED lighting completes this rare Florida Keys retreat.

Details

MLS #
A11877495
Property type
Single-family home
Status
Active
Days on market
468
Neighborhood
PORT PINE HEIGHTS 2ND ADD
County
Monroe County
Property taxes
$28,079 (2024)
Waterfront
Yes
Private pool
No
View
Bay, Water
Garage spaces
4
Cooling
Central Air
Interior features
Second Floor Entry, Built-in Features, Closet Cabinetry, Cooking Island, Elevator, Family Room, Media Room, Utility Room/Laundry
Exterior features
Lighting, Open Balcony
Appliances
Dishwasher, Disposal, Electric Water Heater, Microwave

Location

Estimated payment

$25,853/mo with 20% down at 6.5% for 30 years, including taxes, before insurance.

Adjust in the mortgage calculator

Listing courtesy of Ocean Sotheby's International · Jo Ann Cook. Listing last updated August 9, 2026 11:07 AM.

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The multiple listing information is provided by the MIAMI Association of REALTORS® from a copyrighted compilation of listings. The compilation of listings and each individual listing are © 2026 MIAMI Association of REALTORS®. All rights reserved. The information provided is for consumers' personal, noncommercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing. All properties are subject to prior sale or withdrawal. All information provided is deemed reliable but is not guaranteed accurate, and should be independently verified. Data last updated November 1, 2026 3:40 PM.

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