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Ad #7650598
MLS #619696
Listing photo

Escape to ''The Castle'', a luxurious gated Gulf-front estate

3742 Seagrape St, Big Pine Key, Florida, 33043
$4,995,000
3Beds
3Baths
4,687Sqft
1.140Acres

About this property

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!

Property Features

3 Beds
3 Baths
4,687 Sqft
Built in 2014
1.140 Acres
Open, RV
Siding: CBS
Concrete Roof
Has Swimming Pool
Propane (Heating), Propane Stove
$30,568 / yr property tax
Monroe County
Port Pine Heights (2) Community

Additional Photos

Additional listing photo 1
Additional listing photo 2
Additional listing photo 3
Additional listing photo 4

Contact Information

Ally Kelley

Ocean Sotheby's International Realty

727-459-0493

Location

Map
Listing Agent: Ally Kelley (License #: SL3352184) 727-459-0493
Broker: Ocean Sotheby's International Realty 305-735-4095 Listing Site
Copyright © 2026 Marathon and Lower Keys Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.
BarrierFreeHome.com
Printed Jul 24, 2026

Photo Gallery

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Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 48
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 49
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 50

$4,995,000

3
Beds
3
Baths
4,687
Sqft

3742 Seagrape St, Big Pine Key, Florida, 33043

By contacting this agent you agree to these Terms and Conditions.
Home Florida Big Pine Key
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 1
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 2
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 3
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 4
Escape to ''The Castle'', a luxurious gated Gulf-front estate - photo 5
MLS# 619696
Home For Sale

Escape to ''The Castle'', a luxurious gated Gulf-front estate

$4,995,000

3742 Seagrape St, Big Pine Key, Florida, 33043

3
Beds
3
Baths
4,687
Sqft
1.140
Acres
$4,995,000
3742 Seagrape St, Big Pine Key, Florida, 33043
3 Beds
3 Baths
4,687 Sqft
1.140 Acres

Accessibility Features

Accessible Elevator Installed
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!
85 days
on BarrierFreeHome.com
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saves

Property Details

HOME DETAILS

3 Beds
3 Baths
4,687 Sqft
Built in 2014
1.140 Acres

EXTERIOR

Open, RV
Siding: CBS
Concrete Roof
Has Swimming Pool

INTERIOR

Propane (Heating), Propane Stove

FINANCIAL & COMMUNITY

$30,568 / yr property tax
Monroe County
Port Pine Heights (2) Community
See More Details

Location

Map
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Ad Statistics

Ad Number
7650598
Viewed
23 times
Listing Status
Active
Added
Apr 30, 2026
Last Refresh
Jul 24, 2026 04:01:17 PM

Listing Information

Data Source
Marathon and Lower Keys Association of Realtors
Source Property ID
619696
Listing Agent: Ally Kelley (License #: SL3352184) 727-459-0493
Broker: Ocean Sotheby's International Realty 305-735-4095 Listing Site
Copyright © 2026 Marathon and Lower Keys Association of Realtors. All rights reserved. All information provided by the listing agent/broker is deemed reliable but is not guaranteed and should be independently verified.

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By proceeding, you authorize Dream Home Network Inc., its service providers (including real estate professionals such as Brokers, Listing Agents, Buyers Agents, and local referral partners), its affiliates, and other real estate professionals that may not be associated with Dream Home Network, to contact you using the contact details you provided, via email, phone call, and text (SMS), including using automated dialing technology and prerecorded and artificial voice, for marketing or advertising purposes, including contacting you about your inquiry and other home-related matters. You understand that your consent to the foregoing is not a condition of any purchase. Message and data rates may apply. This consent applies even if you are on a corporate, state or national Do Not Call list. Dream Home Network Inc. may share information about your recent and future site activity with its affiliates and service providers (including real estate professionals such as Brokers, Listing Agents, Buyers Agents, and local referral partners) to help them better understand what you are looking for in a property. To opt-out at any time you can reply "STOP" or contact Dream Home Network Inc. at csv@dreamhomenetwork.com.
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SERVICES
Buy Buy Advertise
COMPANY
Testimonials About Us Office Locations
SUPPORT
Help Contact Us
ADDITIONAL MARKETS
LakeHouse.com MountainHomes.com BeachHouse.com GolfHomes.com
SUBSCRIBE
Receive notifications for new listings
Subscribe
Facebook YouTube

Dream Home Network Inc.

is committed to ensuring digital accessibility and property listings for individuals with disabilities. All information provided is deemed reliable but is not guaranteed and should be independently verified. We are continuously working to improve the accessibility of our web experience for everyone, and we welcome feedback and accommodation requests. If you wish to report an issue or seek an accommodation, please let us know.

Dream Home Network Inc. Sells leads to DHN Realty Inc. who holds real estate brokerage licenses in Alabama. Listing agents will be sent notification copy of leads on their listings where Dream Home Network Inc. is provided listings via our Feed Provider as required.

© 1997 - 2026 Wheelchair-accessible Housing & Universal Design Homes at Barrier Free Home
Part of Dream Home Network, Inc.
Last updated on 2026.07.24
Terms & Policy