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3 Beds
3 Baths
4,687 sqft

$4,650,000

3742 Seagrape Street, Big Pine Key FL, 33043

Price per sqft$992.11
Built in2014
Property size4,687 sqft
Property typeResidential

Overview

Active

Listed Apr 30, 2026

Updated 3 weeks ago

Escape to ''The Castle'', a luxurious gated Gulf-front estate rarely spanning 1.14 acres on Big Pine Key. This extraordinary retreat is a graceful blend of architectural grandeur and coastal charm, thoughtfully designed for both relaxation and recreation. Boaters will delight in an unparalleled offering of 235 feet of dockage total: 140 feet of protected canal-front dockage featuring a 15,000 lb lift, cut-in slip, boat ramp, plus a 95-foot open water pier-style dock with additional 15,000 lb lift and cut-in slip, set against a 130-foot concrete seawall for secure, convenient access. Crafted in 2014 with solid poured concrete, impact-rated windows and doors, whole home generator and elevator, the home is built for enduring elegance. With over 4,600 square feet of refined interior space, this 3-bedroom, 3-bathroom estate is an architect's masterpiece with its stately presence, curved openings, and striking double staircase. Step inside to a breathtaking panorama of endless open Gulf waters and nightly sunset performances. The chef's kitchen is a dream for entertaining, featuring 10.5-foot island with seating for 8, dual sinks, refrigerators, and ovens, plus Jenn-Air 6-burner gas cooktop with pot filler, and rich wood cabinetry. Enjoy the grand family room with Gulf views, host movie nights in the private theater, or dine al-fresco under the stars. Nearby, find the full-size laundry room and storage. The top-floor primary suite is a sanctuary, offering sweeping water views, home office, private lounge with kitchenette, spa-like bath with clawfoot tub, tiled shower and generous walk-in closet with additional laundry. Outside, the resort-style pool beckons with a spa, water features, LED lighting, plus heater and chiller. Rooftop deck with 180-degree views, and unrivaled sunsets await. Offered fully furnished, this is ultimate Keys living without compromise!

$30,937/mo

Est. mortgage payment based on a $4,650,000 home price.

All estimates are provided by Luxury Presence for informational purposes only. Actual amounts may vary.

Additional information

MLS® ID
619696

Interior Features

Bedrooms
3
Bathrooms
3
Heating
Yes
Basement
No

Exterior Features

Lot Size
1.14 Acres

Other Property Details

Taxes
$30,568
Tax Frequency
Annually
View
Yes
Pets Allowed
Yes
Pool
Yes
Waterfront
Yes
MLS provider logo

Listed by Ally Kelley with Ocean Sotheby's International
Listing Contact: 727-459-0493 

The IDX display contains information sourced from the Florida Keys Board of REALTORS® as of 9/1/2026. This data is intended solely for personal, non-commercial use and is not to be utilized for any other purposes except to identify potential properties for purchase. Although the MLS data displayed is typically considered reliable, it is not guaranteed to be accurate by the MLS. Buyers are responsible for verifying the accuracy of all information and are advised to conduct their own investigations or seek professional assistance. Other sources besides the Listing Agent may have contributed to the MLS data presented. Unless expressly specified in writing, the Broker/Agent has not confirmed any information obtained from external sources. The Broker/Agent may or may not have acted as the Listing and/or Selling Agent and cannot guarantee the accuracy of property locations displayed on any map. Any compensation offers are solely made to participants of the MLS where the listing is registered.

©2026 Florida Keys Board of REALTORS® all rights reserved.

Data last updated on 9/1/2026 at 1:43 AM UTC

 

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