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3742 Seagrape Street, 
Big Pine Key, FL 33043

$5,390,000

3

Beds

3

Baths

4,687

Sq Ft

Single Family

Virtual Tour

Active

Listed by

Jo Ann Cook

Ocean Sotheby'S International

Last updated:

June 15, 2026, 02:45 PM

MLS#

A11877495

Source:

RMLS

About This Home

3742 Seagrape Street

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.

Home Facts

Single Family

3 Baths

3 Bedrooms

Built in 2014

Price Summary

5,390,000

$1,149 per Sq. Ft.

MLS #:

A11877495

Last Updated:

June 15, 2026, 02:45 PM

Added:

a year ago

Rooms & Interior

Bedrooms

Total Bedrooms:

3

Bathrooms

Total Bathrooms:

3

Full Bathrooms:

3

Interior

Living Area:

4,687 Sq. Ft.

Structure

Structure

Building Area:

4,687 Sq. Ft.

Year Built:

2014

Finances & Disclosures

Finances

Price:

$5,390,000

Price per Sq. Ft:

$1,149 per Sq. Ft.

Source:RMLS
All listings featuring the BMLS logo are provided by BeachesMLS Inc. This information is not verified for authenticity or accuracy and is not guaranteed. Copyright 2026 Beaches Multiple Listing Service, Inc. Information is provided exclusively for consumers' personal, non-commercial use and may not be used for any purpose other than to identify prospective properties consumers may be interested in purchasing.

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Contact an Agent

Yes, I would like more information. Please use and/or share my information with a Coldwell Banker ® affiliated agent to contact me about my real estate needs. By clicking Contact, I request to be contacted by phone or text message and consent to being contacted by automated means. I understand that my consent to receive calls or texts is not a condition of purchasing any property, goods, or services. Alternatively, I understand that I can access real estate services by email or I can contact the agent myself.

If a Coldwell Banker affiliated agent is not available in the area where I need assistance, I agree to be contacted by a real estate agent affiliated with another brand owned or licensed by Anywhere Real Estate (BHGRE®, CENTURY 21®, Corcoran®, ERA®, or Sotheby's International Realty®). I acknowledge that I have read and agree to the terms of use and privacy notice.